Trial command line option to suppress updating PRIMOS' DATNOW variable.

The link in README.md to install instructions was either old or
never quite right.  Point to DRB's overview document now, which
points (near) to the version specific ones.

.editorconfig

@@ -0,0 +1,15 @@
+# .editorconfig, Boone, 02/11/21
+# Editor behavior settings
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[makefile]
+indent_style = tab

.github/workflows/freebsdbuild.yml

@@ -0,0 +1,26 @@
+name: freebsdbuild
+
+on: workflow_dispatch
+
+jobs:
+  build:
+    runs-on: macos-latest
+    steps:
+    - uses: "actions/checkout@v2"
+    - uses: "vmactions/freebsd-vm@v0.1.3"
+      with:
+        usesh: true
+        prepare: pkg install -y curl git
+        run: |
+          make
+    - uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        automatic_release_tag: "latest"
+        prerelease: false
+        title: "Bleeding Edge Binary - FreeBSD"
+        files: |
+          LICENSE
+          README.md
+          em.1
+          em

.github/workflows/linuxbuild.yml

@@ -0,0 +1,22 @@
+name: linuxbuild
+
+on: workflow_dispatch
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: "actions/checkout@v2"
+    - name: make
+      run: make
+    - uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        automatic_release_tag: "latest"
+        prerelease: false
+        title: "Bleeding Edge Binary - Ubuntu"
+        files: |
+          LICENSE
+          README.md
+          em.1
+          em

.github/workflows/macbuild.yml

@@ -0,0 +1,22 @@
+name: macbuild
+
+on: workflow_dispatch
+
+jobs:
+  build:
+    runs-on: macos-latest
+    steps:
+    - uses: "actions/checkout@v2"
+    - name: make
+      run: make
+    - uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        automatic_release_tag: "latest"
+        prerelease: false
+        title: "Bleeding Edge Binary - MacOS"
+        files: |
+          LICENSE
+          README.md
+          em.1
+          em

README.md

@@ -55,7 +55,7 @@ business unit ceased to exist.  A reformatted copy is available
 A growing collection of Prime and related documentation is available
 at [sysovl.info](https://sysovl.info/reference_prime.html).
 A howto on installing PRIMOS in the emulator is
-[here](https://sysovl.info/reference_prime_drb_installing_primos.html).
+[here](https://sysovl.info/reference_prime_drb_installoview.html).
 Discussion of adapting these instructions to
 22.1.4 has been occurring on the [cctalk mailing
 list](http://classiccmp.org/pipermail/cctalk/2020-March/052126.html).

devamlc.h

@@ -1,4 +1,4 @@
-/* 
+/*
   Implements the AMLC subsystem for Primos.  In earlier versions
   (r186), a more hardware-centric implementation was used that closely
   followed the design of Prime's real AMLC board.  For example, every
@@ -52,9 +52,9 @@
   NOTE: varying the AMLC poll rates dynamically is the default, but
         this can lead to unpredictable performance.  If consistent,
         predictable performance is more important than absolute
-        performance, MAXAMLCSPEEDUP can be set to 1.  Then this 
+        performance, MAXAMLCSPEEDUP can be set to 1.  Then this
         implementation will function more or less like a real Prime.
-    
+
 
   AMLC I/O operations:
 
@@ -133,7 +133,7 @@
 AMLC status word (from AMLCT5):
 
      BITS                 DESCRIPTION
-  
+
       1                   END OF RANGE INTERRUPT
       2                   CLOCK RUNNING
       3-6                 LINE # OF LINE WHOSE DATA SET STATUS HAS CHANGED
@@ -150,6 +150,8 @@ AMLC status word (from AMLCT5):
 
 */
 
+#include <termio.h>
+
 /* this macro closes an AMLC connection - used in several places
 
    NOTE: don't print disconnect message on dedicated lines */
@@ -202,11 +204,11 @@ int devamlc (int class, int func, int device) {
 #define DSSCOUNTDOWN 25
 
   /* connection types for each line.  This _doesn't_ imply the line is
-     actually connected, ie, an AMLC line may be tied to a specific 
+     actually connected, ie, an AMLC line may be tied to a specific
      serial device (like a USB->serial gizmo), but the USB device may
      not be plugged in.  The connection type would be CT_SERIAL but
      the line's fd would be -1 and the "connected" bit would be 0 */
-     
+
 #define CT_SOCKET 1
 #define CT_SERIAL 2
 #define CT_DEDIP 3
@@ -324,7 +326,7 @@ int devamlc (int class, int func, int device) {
       int tempport;
       struct hostent* host;
       char *p;
-  
+
       /* initially, we don't know about any AMLC boards */
 
       for (dx=0; dx<MAXBOARDS; dx++) {
@@ -346,7 +348,7 @@ int devamlc (int class, int func, int device) {
       /* read the amlc.cfg file.  This file has 3 uses:
 
          1. maps Prime async lines to real serial devices, like host
-            serial ports or USB serial boxes.  
+            serial ports or USB serial boxes.
 
             Format: <line #> /dev/<Unix usb device name>
 
@@ -418,7 +420,7 @@ int devamlc (int class, int func, int device) {
               fprintf(stderr,"Line %d of amlc.cfg ignored: IP address too long\n", lc);
               continue;
             }
-            
+
             /* break out host and port number; no port means this is
                an incoming dedicated line: no connects out.  With a
                port means we need to connect to it. */
@@ -553,13 +555,13 @@ int devamlc (int class, int func, int device) {
     /* XXX: this constant is redefined because of a bug in the
        OSX Prolific USB serial driver at version 1.2.1r2.  They should be
        turning on bit 0100, but are turning on 0x0100. */
-#define TIOCM_CD 0x0100    
+#define TIOCM_CD 0x0100
 
     if (func == 00) {             /* input Data Set Sense (carrier) */
       if (dc[dx].serial) {        /* any serial connections? */
         if (--dc[dx].dsstime == 0) {
           dc[dx].dsstime = DSSCOUNTDOWN;
-#ifdef __APPLE__
+/* #ifdef __APPLE__ */
           for (lx = 0; lx < 16; lx++) {  /* yes, poll them */
             if (dc[dx].ctype[lx] == CT_SERIAL) {
               int modemstate;
@@ -575,7 +577,7 @@ int devamlc (int class, int func, int device) {
               }
             }
           }
-#endif
+/* #endif */
         }
       }
       //printf("devamlc: dss for device '%o = 0x%x\n", device, dc[dx].dss);
@@ -634,10 +636,10 @@ int devamlc (int class, int func, int device) {
         }
         break;
 
-        
+
       case CT_SERIAL: {
         int fd;
-            
+
         /* setup line characteristics if they have changed (check for
            something other than DTR changing) */
 
@@ -707,7 +709,7 @@ int devamlc (int class, int func, int device) {
              1_0 - cts/rts flow control (2413 becomes 6413)
              1_1 - dsr/dtr flow control (2413 becomes 7413)
 
-             NOTE: bit 11 also appears to be free, but Primos doesn't 
+             NOTE: bit 11 also appears to be free, but Primos doesn't
              let it flow through to the AMLC controller. :(
           */
 
@@ -758,7 +760,6 @@ int devamlc (int class, int func, int device) {
 
         /* set DTR high (02000) or low if it has changed */
 
-#ifdef __APPLE__
         if ((getcrs16(A) ^ dc[dx].lconf[lx]) & 02000) {
           int modemstate;
           //printf("devamlc: DTR state changed\n");
@@ -771,7 +772,6 @@ int devamlc (int class, int func, int device) {
           }
           ioctl(fd, TIOCMSET, &modemstate);
         }
-#endif
         break;
       }
 
@@ -841,7 +841,7 @@ int devamlc (int class, int func, int device) {
     double ts;
     int neweor, activelines;
     //printf("poll device '%o, speedup=%5.2f, cti=%x, xmit=%x, recv=%x, dss=%x\n", device, pollspeedup, dc[dx].ctinterrupt, dc[dx].xmitenabled, dc[dx].recvenabled, dc[dx].dss);
-    
+
     /* check for 1 new telnet connection every AMLCACCEPTSECS seconds
        (10 times per second) */
 
@@ -1036,7 +1036,7 @@ int devamlc (int class, int func, int device) {
 
                 int fd, sockflags;
                 struct sockaddr_in raddr;
-  
+
                 dc[dx].obtimer[lx] = tv.tv_sec + AMLCCONNECT;
                 //printf("em: trying to connect to 0x%08x:%d\n", dc[dx].obhost[lx], dc[dx].obport[lx]); /***/
                 fd = socket(AF_INET, SOCK_STREAM, 0);
@@ -1121,7 +1121,7 @@ int devamlc (int class, int func, int device) {
     }
 
     /* process input, but only as much as will fit into the DMC
-       buffer.  
+       buffer.
 
        Because the size of the AMLC tumble tables is limited, this
        could pose a denial of service issue.  Input is processed in a

em.c

@@ -15,7 +15,7 @@
 
    $ time ./em -tport 8000 -cpuid 5 -boot 14714 -map MFD.2462/PRIRUN/RING0.MAP MFD.2462/PRIRUN/RING3.MAP 2>err
 
-   Disk boot device is 14uc4, tape is 10005, 
+   Disk boot device is 14uc4, tape is 10005,
    where u=1/3/5/7 for units 0/1/2/3
    and c=1/3/5/7 for controller 26/27/...
       (See complete boot table below)
@@ -23,7 +23,7 @@
    NOTE: the -map command is optional, but is needed to set the
    real-time clock automatically for older models (cpuid < 15).  If
    maps are not available, use the Primos SE command to set the clock
-   manually after the system boots: 
+   manually after the system boots:
         SE -MMDDYY HHMM
 
    -------------
@@ -40,11 +40,11 @@ $ time ./em  -cpuid 5 -boot SAM.SAVE 14114 2>err
 
 Enter physical device = 2466
 
-QUICK VERIFY MODE Enabled; Enter 'RESET QVFY' for normal operation. 
+QUICK VERIFY MODE Enabled; Enter 'RESET QVFY' for normal operation.
-Enter 'SET DCM' to display CASE messages. 
+Enter 'SET DCM' to display CASE messages.
 Enter 'LOAD;RUN' for Default Execution
 
-SAM> 
+SAM>
 
    --------------
    Usage:  to load initial boot from tape, then prompt for disk pdev
@@ -56,7 +56,7 @@ Sense switches set to 1005       <--- these cause pdev prompt
 
 PHYSICAL DEVICE=2466
 
-DISK ERROR, STATUS: 000001 
+DISK ERROR, STATUS: 000001
 PHYSICAL DEVICE=
 
    ---------------
@@ -70,12 +70,12 @@ RUN FILE TREENAME=MFD>DOS>DOS.SAVE
 BOOTING FROM MT0    MFD>DOS>DOS.SAVE
 
 
-PRIMOS II REV 20.0 03/15/85 (AT 170000) 
+PRIMOS II REV 20.0 03/15/85 (AT 170000)
 Copyright (c) Prime Computer, Inc. 1985.
-PRIMOS II is being phased out.  To boot PRIMOS return to CP mode. 
+PRIMOS II is being phased out.  To boot PRIMOS return to CP mode.
 ("BOOT 14xxx" will autoboot PRIMOS.)
 
-OK: 
+OK:
    ---------------
 
 TRACING:
@@ -138,7 +138,7 @@ gv.tracetriggered = 1; this simulates the Ctrl-t.
 
    Locations '40-'57 are reserved for 8 DMC channels, 2 words each.
    Locations '60-'77 are interrupt vectors
-   Locations '100-'177 are for external device interrupts 
+   Locations '100-'177 are for external device interrupts
    see p. A-8 of Sys Arch
 
    In VI mode, locations 0-'17 are trapped and map to the live
@@ -191,7 +191,7 @@ static void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int
 
 /* set condition codes based on V-mode FP accumulator
 
-   NOTES: 
+   NOTES:
 
    -Prime considers anything with a zero fraction to be zero,
    even if the exponent is non-zero (this is a "dirty zero")
@@ -202,7 +202,7 @@ static void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int
 
    XXX: #define SETCC_F SETCC_32(getcrs32(FLTH))
 */
-  
+
 #define SETCC_F \
   CLEARCC; \
   if (getcrs32s(FLTH) < 0) \
@@ -274,6 +274,7 @@ static void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int
    T_EAV        trace V-mode effective address calculation
    T_EAI        trace I-mode effective address calculation
    T_FLOW       instruction summary
+   T_FP         floating point
    T_INST       detailed instruction trace
    T_MODE       trace CPU mode changes
    T_EAAP       AP effective address calculation
@@ -311,6 +312,7 @@ static void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int
 #define T_EAS   0x00040000
 #define T_TLB   0x00080000
 #define T_SMLC  0x00100000
+#define T_FP    0x00200000
 
 #define BITMASK16(b) (0x8000 >> ((b)-1))
 #define BITMASK32(b) ((unsigned int)(0x80000000) >> ((b)-1))
@@ -435,7 +437,7 @@ typedef struct {
 
    The special cache can also be used for write references.  Bits 2-4
    of the cache entry vpn are the access bits from mapva, so bit 4
-   being 1 means that writes are allowed.  
+   being 1 means that writes are allowed.
 
    IMPORTANT NOTE: bit 4 MUST BE CHECKED before all write references!
 */
@@ -657,6 +659,7 @@ static unsigned short *physmem = NULL; /* system's physical memory */
 #define LASTFAULT     077
 
 //static ea_t tnoua_ea=0, tnou_ea=0, tsrc_ea=0;
+static int noclock;                         /* -noclock arg */
 static int domemdump;                       /* -memdump arg */
 static int dolinecleararg;                  /* -dolineclear arg */
 
@@ -714,7 +717,7 @@ char *brp_name() {
    match; if the address isn't found exactly, the index returned
    will be the address lower than the requested address, or -1
    if the symbol table is empty or the requested address is
-   lower than any in the symbol table 
+   lower than any in the symbol table
 
    Symbol types:
      e = address of ecb
@@ -851,7 +854,7 @@ char *searchloadmap(int addr, char type) {
       return buf[bufix];
     } else
       return mapsym[ix].symname;
-  } else 
+  } else
     return &blank;
 }
 
@@ -1070,11 +1073,11 @@ static unsigned int mapio(ea_t ea) {
 #define put64(value, ea) (put64r((value),(ea),RP))
 #define put64r0(value, ea) (put64r((value),(ea),0))
 
-/* 
+/*
    get16 handles 16-bit fetches that CANNOT cause address traps.
 
    get16t handles 16-bit fetches that MIGHT cause address traps,
-   indicated by the sign bit set in EA. 
+   indicated by the sign bit set in EA.
    Address traps can occur:
    - fetching S/R mode instructions
    - fetching V-mode instructions when RPL < 010 or 040 (seg enabled/not)
@@ -1090,7 +1093,7 @@ static unsigned int mapio(ea_t ea) {
    get16r handles 16-bit fetches that used a passed-in virtual address;
    (only the ring part is used from this address).
 
-   VERY IMPORTANT: get16r _cannot_ use the supercache!  You don't want to 
+   VERY IMPORTANT: get16r _cannot_ use the supercache!  You don't want to
    cache Ring 0 accesses to data, then let Ring 3 use the cache!  It could
    be changed to use a special R0 brp cache entry, but probably not much
    gain performance-wise.  Might speed up process exchange...
@@ -1490,7 +1493,7 @@ static void put64r(long long value, ea_t ea, ea_t rpring) {
    disk buffers and shutdown gracefully.
 
    NOTE: it may take up to 1 minute for Primos to see the sensor
-   check.  User 1 will usually be at the OK, prompt, waiting on 
+   check.  User 1 will usually be at the OK, prompt, waiting on
    input, and the check will occur when the 1-minute abort occurs.
 
    NOTE: these are inactive if the emulator is using dedicated
@@ -1545,7 +1548,7 @@ void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int dswsta
 }
 
 
-/* queue instructions 
+/* queue instructions
 
    NOTE: ABQ is typically used in software to add an item to a
    hardware (physical) queue and RTQ is used by DMQ hardware to fetch
@@ -1553,7 +1556,7 @@ void macheck (unsigned short p300vec, unsigned short chkvec, unsigned int dswsta
    support physical queues, but only ABQ and RTQ currently support
    them (they're needed for AMLC boards).  If ICS support is added,
    the other queue instructions will probably need to support physical
-   queues. 
+   queues.
 
    The CPU KEYS are not set here because this would not happen on a
    DMQ request - only when the instruction is executed by software.
@@ -1739,7 +1742,7 @@ static int (*devmap[64])(int, int, int) = {
 static void warn(char *msg) {
   printf("emulator warning:\n  instruction #%u at %o/%o: %o %o keys=%o, modals=%o\n  %s\n", gv.instcount, gv.prevpc >> 16, gv.prevpc & 0xFFFF, get16t(gv.prevpc), get16t(gv.prevpc+1),getcrs16(KEYS), getcrs16(MODALS), msg);
 }
-    
+
 
 /* return a string for the keys
    C = C bit set
@@ -1792,7 +1795,7 @@ char *keystring(unsigned short keys) {
 /* return a string for the modals
    I = interrupts inhibited, bit 1 = 0
    E = interrupts enabled, bit 1 = 1
-   
+
    V = vectored interrupt mode, bit 2 = 1
 
    0-7 = CRS, bits 9-11
@@ -1857,7 +1860,7 @@ static void fatal(char *msg) {
   if (msg)
     printf(": %s", msg);
   printf("\n");
-  
+
   if (physmem != NULL) {
     printf("instruction #%u at %o/%o %s ^%06o^\nA='%o/%d  B='%o/%d  L='%o/%d  X='%o/%d K=%o [%s]\nowner=%o %s, modals=%o [%s]\n", gv.instcount, gv.prevpc >> 16, gv.prevpc & 0xFFFF, searchloadmap(gv.prevpc,' '), lights, getcrs16(A), getcrs16s(A), getcrs16(B), getcrs16s(B), getcrs32(A), getcrs32s(A), getcrs16(X), getcrs16s(X), getcrs16(KEYS), keystring(getcrs16(KEYS)), getcrs16(OWNERL), searchloadmap(getcrs32(OWNER),' '), getcrs16(MODALS), modstring(getcrs16(MODALS)));
 
@@ -1899,7 +1902,7 @@ static void fatal(char *msg) {
     for (i=0; i<64; i++)
       devmap[i](-2, 0, i);
   }
-  
+
 #ifndef NOTRACE
   fclose(gv.tracefile);
 #endif
@@ -1948,7 +1951,7 @@ static void newkeys (unsigned short new) {
 }
 
 static void fault(unsigned short fvec, unsigned short fcode, ea_t faddr) {
-  static unsigned char faultname[LASTFAULT-FIRSTFAULT+2][4] = 
+  static unsigned char faultname[LASTFAULT-FIRSTFAULT+2][4] =
     {"RXM", "PRC", "PAG", "SVC", "UII", "SEM", "MCK", "MM", "ILL", "ACC", "ARI", "STK", "SEG", "PTR", "-?-"};
   unsigned char *faultnamep;
   ea_t pcbp, pxfvec, csea, ea;
@@ -1981,7 +1984,7 @@ static void fault(unsigned short fvec, unsigned short fcode, ea_t faddr) {
   regs.sym.pswkeys = crs[KEYS];   /* Prime->Prime: no swap! */
   putcrs16(FCODE, fcode);
   putcrs32(FADDR, faddr);
-  
+
   if (FIRSTFAULT <= fvec && fvec <= LASTFAULT)
     faultnamep = faultname[fvec-FIRSTFAULT];
   else
@@ -2073,7 +2076,7 @@ static void fault(unsigned short fvec, unsigned short fcode, ea_t faddr) {
 }
 
 
-/* 16S Addressing Mode 
+/* 16S Addressing Mode
 
    NOTE: when fetching indirect words via address traps, ie, the word
    is in a register, the segment and ring bits are unimportant.  But
@@ -2085,7 +2088,7 @@ static void fault(unsigned short fvec, unsigned short fcode, ea_t faddr) {
 */
 
 static ea_t ea16s (unsigned short inst) {
-  
+
   unsigned short rpl, amask, i, x;
   int indlevel;
   ea_t ea, va;
@@ -2124,7 +2127,7 @@ static ea_t ea16s (unsigned short inst) {
 /* 32S Addressing Mode */
 
 static ea_t ea32s (unsigned short inst) {
-  
+
   unsigned short rpl, amask, i, x;
   int indlevel;
   ea_t ea, va;
@@ -2191,7 +2194,7 @@ static inline ea_t ea32r64r (ea_t earp, unsigned short inst) {
       TRACE(T_EAR, " PC relative, P=%o, new ea=%o\n", rpl, ea);
       eap = &gv.brp[RPBR];
     }
-    else 
+    else
       goto special;                              /* special cases */
   else {
     eap = &gv.brp[S0BR];
@@ -2352,7 +2355,7 @@ special:
 static ea_t apea(unsigned short *bitarg) {
   unsigned short ibr, ea_s, ea_w, bit, br, a;
   unsigned int utempl;
-  ea_t ea, ip;
+  ea_t ea, ip, iwea;
 
   eap = &gv.brp[RPBR];
   utempl = get32(RP);
@@ -2378,8 +2381,11 @@ static ea_t apea(unsigned short *bitarg) {
       bit = get16(INCVA(ea,2)) >> 12;
     else
       bit = 0;
+    iwea = ea;
     ea = ip;
     TRACE(T_EAAP, " After indirect, AP ea = %o/%o, bit=%d  %s\n", ea>>16, ea & 0xFFFF, bit, searchloadmap(ea,' '));
+    if (ea & 0x80000000)
+      fault(POINTERFAULT, ea>>16, iwea);
   }
   if (bitarg != NULL)
     *bitarg = bit;
@@ -2419,7 +2425,7 @@ static inline void mathexception(unsigned char extype, unsigned short fcode, ea_
   putcrs16(KEYS, getcrs16(KEYS) | 0x8000);
   switch (extype) {
   case 'i':
-    if (getcrs16(KEYS) & 0400) 
+    if (getcrs16(KEYS) & 0400)
       fault(ARITHFAULT, fcode, faddr);
     break;
   case 'd':
@@ -2713,7 +2719,7 @@ static void argt() {
   rp = get32(stackfp+2);
 
   /* reload the caller's base registers for EA calculations */
-  
+
   brsave[0] = rp >> 16;    brsave[1] = 0;
   /* set ring bits on LB and SB to get correct ring on args */
   brsave[2] = get16(stackfp+4) | ((rp >> 16) & RINGMASK16);
@@ -2840,7 +2846,7 @@ static void pcl (ea_t ecbea) {
   /* get a copy of the ecb.  gates must be aligned on a 16-word
      boundary, therefore can't cross a page boundary, and mapva has
      already ensured that the ecb page is resident.  For a non-gate
-     ecb, check to see if it crosses a page boundary.  If not, a 
+     ecb, check to see if it crosses a page boundary.  If not, a
      memcpy is okay; if it does, do fetches */
 
   if (access == 1 && (ecbea & 0xF) != 0)
@@ -2961,7 +2967,7 @@ static void pcl (ea_t ecbea) {
      Y(low) = number of arguments left to transfer (JW hack!) */
 
 
-  /* if a page fault occurs during argument transfer, we need to 
+  /* if a page fault occurs during argument transfer, we need to
      make sure to use the current RP, which points to the ARGT
      instruction.  Otherwise, the return from the page fault
      is to the PCL instruction, which has already completed at
@@ -3043,7 +3049,7 @@ static void pcl (ea_t ecbea) {
       utempa = get16(get32(ea));       /* 1st arg: key */
       TRACEA(" TSRC$$: key = %d\n", utempa);
       eatemp = get32(ea+9);       /* 4th arg: CP(1..2) */
-      utempl = get32(eatemp);   
+      utempl = get32(eatemp);
       utempa1 = utempl>>16;       /* starting cp */
       utempa2 = utempl&0xffff;    /* # chars */
       TRACEA("   cp(0)=%d, cp(1)=%d, loc(cp)=%o/%o\n", utempa1, utempa2, eatemp>>16, eatemp&0xffff);
@@ -3121,7 +3127,7 @@ static void calf(ea_t ea) {
   for (i=0; i<6; i++)
     cs[i] = get16r0(csea+i);
 
-  /* pop the concealed stack 
+  /* pop the concealed stack
      XXX: this was after code below.  Does it matter? */
 
   put16r0(this, pcbp+PCBCSNEXT);
@@ -3141,7 +3147,7 @@ static void calf(ea_t ea) {
 
 
 /* process exchange register save:  saves the current register
-   set to the process pcb. 
+   set to the process pcb.
    NOTES:
    - adding "wait" arg and only saving base registers fixed Case 63
 */
@@ -3163,7 +3169,7 @@ static void pxregsave(unsigned short wait) {
   }
 
   TRACE(T_PX, "pxregsave: saving registers owned by %o (wait=%d)\n", getcrs16(OWNERL), wait);
-    
+
   /* NB: I think hardware might save the base registers in a predictable
      location in the PCB register save area, rather than compressed in a
      random order, because IIRC, Primos sometimes looks at a waiting
@@ -3248,7 +3254,7 @@ static void ors(unsigned short pcbw) {
        debug, I wanted to make sure a process never owns 2 register sets */
 
     if (ownerl == pcbw) {
-      if (ownedx >= 0) 
+      if (ownedx >= 0)
         fatal("Process owns more than 1 register set!");
       ownedx = rx;
     } else if (ownerl == 0)
@@ -3369,7 +3375,7 @@ static void dispatcher() {
     fatal(NULL);
   }
 #endif
-  
+
   /* pcbp now points to the process we're going to run (pcbw is the
      16-bit word number that will go in OWNERL).  By definition, this
      process should not be on any wait lists, so pcb.waitlist(seg)
@@ -3474,7 +3480,7 @@ static void dispatcher() {
     TRACE(T_PX, "dispatch: abort flags for %o are %o\n", getcrs16(OWNERL), utempa);
     put16r0(0, pcbp+PCBABT);
     fault(PROCESSFAULT, utempa, 0);
-    fatal("fault returned after process fault");    
+    fatal("fault returned after process fault");
   }
 
   firstbdx = 1;
@@ -3582,8 +3588,8 @@ static unsigned short ready (ea_t pcbp, unsigned short begend) {
 
   resched = 0;
   if (level < getar16(PLA16) || (level == getar16(PLA16) && begend)) {
-    regs.sym.plb = regs.sym.pla;          /* Prime->Prime: no byte swap */ 
+    regs.sym.plb = regs.sym.pla;          /* Prime->Prime: no byte swap */
-    regs.sym.pcbb = regs.sym.pcba;        /* Prime->Prime: no byte swap */ 
+    regs.sym.pcbb = regs.sym.pcba;        /* Prime->Prime: no byte swap */
     putar16(PLA16, level);
     putar16(PCBA16, pcbw);
     resched = 1;
@@ -3783,7 +3789,7 @@ static void lpsw() {
   if (getcrs16(MODALS) & 4) {
     TRACE(T_PX, "Segmentation enabled\n");
     gv.livereglim = 010;
-  } else 
+  } else
     gv.livereglim = 040;
   if (getcrs16(MODALS) & 010) {
     TRACE(T_PX, "Process exchange enabled:\n");
@@ -3826,7 +3832,7 @@ static void sssn() {
     put16(0, ea+i);
   }
 
-  /* if SSSN is from segment 14, it's probably the rev 23.4.Y2K 
+  /* if SSSN is from segment 14, it's probably the rev 23.4.Y2K
      system serial number check.  Bypass the check loop. */
 
   if (RPH == 014)
@@ -4166,9 +4172,9 @@ static int add32(unsigned int a1, unsigned int a2, unsigned int a3, ea_t ea) {
   uresult = utemp;                         /* truncate result to result size */
   retval = uresult;
   if (utemp & 0x100000000LL)               /* set L-bit if carry occurred */
-    link = 020000;  
+    link = 020000;
   if (uresult == 0)                        /* set EQ? */
-    eq = 0100; 
+    eq = 0100;
   if (((~a1 ^ a2) & (a1 ^ uresult) & 0x80000000) == 0) {
     if (*(int *)&uresult < 0)
       lt = 0200;
@@ -4191,11 +4197,11 @@ static int add16(unsigned short a1, unsigned short a2, unsigned short a3, ea_t e
   uresult = a1;                            /* expand to higher precision */
   uresult += a2;                           /* double-precision add */
   uresult += a3;                           /* again, for subtract */
-  keybits = (uresult & 0x10000) >> 3;      /* set L-bit if carry occurred */  
+  keybits = (uresult & 0x10000) >> 3;      /* set L-bit if carry occurred */
   uresult &= 0xFFFF;                       /* truncate result */
   retval = uresult;                        /* save result */
   if (uresult == 0)                        /* set EQ? */
-    keybits |= 0100; 
+    keybits |= 0100;
   oflow = (((~a1 ^ a2) & (a1 ^ uresult) & 0x8000) != 0); /* overflow! */
   if (oflow)
     uresult = ~uresult;
@@ -4451,6 +4457,7 @@ int main (int argc, char **argv) {
 
 #include "dispatch.h"
 
+  noclock = 0;
   domemdump = 0;
   dolinecleararg = 0;
   bootarg = NULL;
@@ -4469,6 +4476,9 @@ int main (int argc, char **argv) {
       while (i+1 < argc && argv[i+1][0] != '-')
         readloadmap(argv[++i], 1);
 
+    } else if (strcmp(argv[i],"-noclock") == 0) {
+      noclock = 1;
+
     } else if (strcmp(argv[i],"-memdump") == 0) {
       domemdump = 1;
 
@@ -4615,6 +4625,8 @@ int main (int argc, char **argv) {
           gv.traceflags |= T_TLB;
         else if (strcmp(argv[i],"smlc") == 0)
           gv.traceflags |= T_SMLC;
+        else if (strcmp(argv[i],"fp") == 0)
+          gv.traceflags |= T_FP;
         else if (isdigit(argv[i][0]) && strlen(argv[i]) <= 3 && sscanf(argv[i],"%d", &templ) == 1)
           gv.traceuser = 0100000 | (templ<<6);   /* form OWNERL for user # */
         else if (strlen(argv[i]) == 6 && sscanf(argv[i],"%o", &templ) == 1)
@@ -4685,7 +4697,7 @@ int main (int argc, char **argv) {
     regs.u32[i] = 0;
 
   crsl = (void *)regs.sym.userregs[0]; /* first user register set */
-  
+
   putcrs16(MODALS, 0);                /* interrupts inhibited */
   newkeys(0);
   RP = 01000;
@@ -4701,8 +4713,8 @@ int main (int argc, char **argv) {
     fatal("Can't allocate Prime memory block");
   }
   bzero(MEM, 64*1024*2);              /* zero first 64K words */
-  
+
-  /* if no maps were specified on the command line, look for ring0.map and 
+  /* if no maps were specified on the command line, look for ring0.map and
      ring3.map in the current directory and read them */
 
   if (numsyms == 0) {
@@ -4903,7 +4915,7 @@ a filename, CPU registers and keys are loaded from the runfile header.\n\
   close(bootfd);
 
   /* check we got it all */
-  
+
   if (nw2 != nw*2) {
     printf("rvec[0]=%d, rvec[1]=%d, nw2=%d, nw=%d, nw*2=%d\n", rvec[0], rvec[1], nw2, nw, nw*2);
     fatal("Didn't read entire boot program");
@@ -4914,7 +4926,7 @@ a filename, CPU registers and keys are loaded from the runfile header.\n\
 #if 1
   /* do a partial sysclr... move it here later if it fixes rev 19
      reboot from tape (ctrl-b) */
-  
+
   putcrs16(MODALS, 0);                /* interrupts inhibited */
   for (i=0; i < STLBENTS; i++)
     gv.stlb[i].seg = 0xFFFF;        /* marker for invalid STLB entry */
@@ -5140,7 +5152,7 @@ fetch:
   /* NOTE: Rev 21 Sys Arch Guide, 2nd Ed, pg 3-32 says:
 
      "When bits 17 to 32 of the program counter contain a value within
-     the ATR (address trap range) and the processor is reading an 
+     the ATR (address trap range) and the processor is reading an
      instruction, an address trap always occurs.  The only exception
      to this is if the machine is operating in 32I mode."
 
@@ -5154,7 +5166,7 @@ fetch:
      NOTE 10/9/2007 (JW):
      iget16 has checks for RP < 0 to indicate an address trap, and all
      of the EA calculations can generate traps (and set the high-order
-     bit) except 32I.  
+     bit) except 32I.
 
      If it's a bad idea for RP to have the high-order bit set, then
      this code can be enabled, along with special handling in JMP,
@@ -5253,7 +5265,7 @@ xec:
 
   } else if ((getcrs16(KEYS) & 0016000) == 010000) {  /* E32I */
       goto imode;
-    
+
   } else if ((inst & 036000) == 030000) { /* check for pio in S/R modes, */
     pio(inst);                            /* before calculating EA */
     goto fetch;
@@ -5525,7 +5537,7 @@ d_stac:  /* 001200 */
   if (get16(ea) == getcrs16(B)) {
     put16(getcrs16(A), ea);
     SETEQ;
-  } else 
+  } else
     CLEAREQ;
   goto fetch;
 
@@ -5535,7 +5547,7 @@ d_stlc:  /* 001204 */
   if (get32(ea) == getcrs32(E)){
     put32(getcrs32(L), ea);
     SETEQ;
-  } else 
+  } else
     CLEAREQ;
   goto fetch;
 
@@ -5665,7 +5677,7 @@ d_zmvd:  /* 001115 */
     while (utempa--)
       *zcp2++ = *zcp1++;
 #else
-    /* this causes error: 
+    /* this causes error:
           Coldstarting PRIMOS, Please wait...
           Unable to initialize gate segment.  (GATE_INIT) */
     memcpy(zcp2, zcp1, utempa);
@@ -6063,7 +6075,7 @@ d_wait:  /* 000315 */
   pwait();
   goto fetch;
 
-d_nfy:  /* 1210 (nfye), 1211 (nfyb), 
+d_nfy:  /* 1210 (nfye), 1211 (nfyb),
            1214 (inen), 1215 (inbn), 1216 (inec), 1217 (inbc) */
   TRACE(T_FLOW, " NFY\n", inst);
   RESTRICT();
@@ -6263,7 +6275,7 @@ d_svc:  /* 000505 */
   TRACE(T_FLOW, " SVC\n");
   fault(SVCFAULT, 0, 0);
   fatal("Returned from SVC fault");
-  
+
 d_cea:  /* 000111 */
   TRACE(T_FLOW, " CEA\n");
   switch ((getcrs16(KEYS) & 016000) >> 10) {
@@ -6598,7 +6610,7 @@ d_bfgt:  /* 0141611 */
 d_bix:  /* 0141334 */
   TRACE(T_FLOW, " BIX\n");
   putcrs16(X, getcrs16(X) + 1);
-  if (getcrs16(X) != 0) 
+  if (getcrs16(X) != 0)
     RPL = iget16(RP);
   else
     INCRP;
@@ -6607,7 +6619,7 @@ d_bix:  /* 0141334 */
 d_biy:  /* 0141324 */
   TRACE(T_FLOW, " BIY\n");
   putcrs16(Y, getcrs16(Y) + 1);
-  if (getcrs16(Y) != 0) 
+  if (getcrs16(Y) != 0)
     RPL = iget16(RP);
   else
     INCRP;
@@ -6616,7 +6628,7 @@ d_biy:  /* 0141324 */
 d_bdy:  /* 0140724 */
   TRACE(T_FLOW, " BDY\n");
   putcrs16(Y, getcrs16(Y) - 1);
-  if (getcrs16(Y) != 0) 
+  if (getcrs16(Y) != 0)
     RPL = iget16(RP);
   else
     INCRP;
@@ -6625,7 +6637,7 @@ d_bdy:  /* 0140724 */
 d_bdx:  /* 0140734 */
   TRACE(T_FLOW, " BDX\n");
   putcrs16(X, getcrs16(X) - 1);
-  if (getcrs16(X) == 0) 
+  if (getcrs16(X) == 0)
     INCRP;
   else {
     m = iget16(RP);
@@ -6635,7 +6647,7 @@ d_bdx:  /* 0140734 */
       long delayusec, actualmsec;
 
       /* for BDX * loop (backstop process mainly), we want to change
-         this to a long sleep so that the emulation host's CPU isn't 
+         this to a long sleep so that the emulation host's CPU isn't
          pegged the whole time the emulator is running.
 
          So first, check to see if any device times expire sooner than
@@ -6676,7 +6688,7 @@ d_bdx:  /* 0140734 */
       if (delayusec > 1000) {
         if (gettimeofday(&tv0, NULL) != 0)
           fatal("em: gettimeofday 0 failed");
-        
+
         /* for some reason, the SIGTERM signal handler gets reset
            during emulator initialization; this re-installs it */
 
@@ -6699,7 +6711,7 @@ d_bdx:  /* 0140734 */
           TRACEA(" BDX loop at %o/%o, owner=%o, utempl=%d, wanted %d ms, got %d ms\n", gv.prevpc>>16, gv.prevpc&0xffff, getcrs16(OWNERL), utempl, delayusec/1000, actualmsec);
         }
 #endif
-        /* do timer bookkeeping that would have occurred if we had 
+        /* do timer bookkeeping that would have occurred if we had
            actually looped on BDX utempl times */
 
         for (i=0; i<64; i++)
@@ -6815,14 +6827,14 @@ d_caz:  /* 0140214 */
 d_irx:  /* 0140114 */
   TRACE(T_FLOW, " IRX\n");
   putcrs16(X, getcrs16(X) + 1);
-  if (getcrs16(X) == 0) 
+  if (getcrs16(X) == 0)
     INCRP;
   goto fetch;
 
 d_drx:  /* 0140210 */
   TRACE(T_FLOW, " DRX\n");
   putcrs16(X, getcrs16(X) - 1);
-  if (getcrs16(X) == 0) 
+  if (getcrs16(X) == 0)
     INCRP;
   goto fetch;
 
@@ -7293,7 +7305,7 @@ d_tstq:  /* 0141757 */
 
   /* XXX: hack for CPU.FAULT; not sure how to determine
      whether an instruction is illegal or unimplemented */
-  
+
   fault(ILLINSTFAULT, RPL, RP);
   fatal("Return from 0141700 fault");
 
@@ -8430,7 +8442,7 @@ dfcmdr:
       if (get32(ea) == getgr32(dr+1)) {
         put32(getgr32(dr), ea);
         SETEQ;
-      } else 
+      } else
         CLEAREQ;
       break;
 
@@ -8440,7 +8452,7 @@ dfcmdr:
       if (get16(ea) == (getcrs16(dr*2+1))) {
         put16(getgr16(dr), ea);
         SETEQ;
-      } else 
+      } else
         CLEAREQ;
       break;
 
@@ -8729,7 +8741,7 @@ dfcmdr:
           tempa1 = getgr32(FAC0+dr+1) & 0xffff;
           tempa2 = immu64 & 0xffff;
           if (abs(tempa1-tempa2) < 48)
-            if (prieee8(getfr64(dr), &tempd1) 
+            if (prieee8(getfr64(dr), &tempd1)
                 && prieee8(immu64, &tempd2)
                 && ieeepr8(tempd1+tempd2, (long long *)(crsl+FAC0+dr), 0))
               CLEARC;
@@ -8751,7 +8763,7 @@ dfcmdr:
         immu64 = get64(ea);
       if (immu64 & 0xFFFFFFFF00000000LL)
         if (getgr32s(FAC0+dr))
-          if (prieee8(getfr64(dr), &tempd1) 
+          if (prieee8(getfr64(dr), &tempd1)
               && prieee8(immu64, &tempd2)
               && ieeepr8(tempd1+tempd2, (long long *)(crsl+FAC0+dr), 0))
             CLEARC;
@@ -8843,7 +8855,7 @@ dfcmdr:
           tempa1 = getgr32(FAC0+dr+1) & 0xffff;
           tempa2 = immu64 & 0xffff;
           if (abs(tempa1-tempa2) < 48)
-            if (prieee8(getfr64(dr), &tempd1) 
+            if (prieee8(getfr64(dr), &tempd1)
                 && prieee8(immu64, &tempd2)
                 && ieeepr8(tempd1-tempd2, (long long *)(crsl+FAC0+dr), 0))
               CLEARC;
@@ -8869,7 +8881,7 @@ dfcmdr:
         immu64 = get64(ea);
       if (immu64 & 0xFFFFFFFF00000000LL)
         if (getgr32s(FAC0+dr))
-          if (prieee8(getfr64(dr), &tempd1) 
+          if (prieee8(getfr64(dr), &tempd1)
               && prieee8(immu64, &tempd2)
               && ieeepr8(tempd1-tempd2, (long long *)(crsl+FAC0+dr), 0))
             CLEARC;
@@ -8893,7 +8905,7 @@ dfcmdr:
           immu64 = ((immu64 << 32) & 0xffffff0000000000LL) | (immu64 & 0xff);
         }
         if (immu64 & 0xFFFFFFFF00000000LL)
-          if (prieee8(immu64, &tempd2) 
+          if (prieee8(immu64, &tempd2)
               && prieee8(getfr64(dr), &tempd1)
               && ieeepr8(tempd1*tempd2, (long long *)(crsl+FAC0+dr), 0))
             CLEARC;
@@ -8913,7 +8925,7 @@ dfcmdr:
         if (*(int *)&ea >= 0)
           immu64 = get64(ea);
         if (immu64 & 0xFFFFFFFF00000000LL)
-          if (prieee8(immu64, &tempd2) 
+          if (prieee8(immu64, &tempd2)
               && prieee8(getfr64(dr), &tempd1)
               && ieeepr8(tempd1*tempd2, (long long *)(crsl+FAC0+dr), 0))
             CLEARC;
@@ -8991,7 +9003,7 @@ dfcmdr:
       }
       if (immu64 & 0xFFFFFFFF00000000LL)
         if (getgr32s(FAC0+dr))
-          if (prieee8(immu64, &tempd2) 
+          if (prieee8(immu64, &tempd2)
               && prieee8(getfr64(dr), &tempd1)
               && ieeepr8(tempd1/tempd2, (long long *)(crsl+FAC0+dr), 1))
             CLEARC;
@@ -9011,7 +9023,7 @@ dfcmdr:
         immu64 = get64(ea);
       if (immu64 & 0xFFFFFFFF00000000LL)
         if (getgr32s(FAC0+dr))
-          if (prieee8(immu64, &tempd2) 
+          if (prieee8(immu64, &tempd2)
               && prieee8(getfr64(dr), &tempd1)
               && ieeepr8(tempd1/tempd2, (long long *)(crsl+FAC0+dr), 1))
             CLEARC;
@@ -9555,7 +9567,7 @@ d_adddad:  /* 00600 (R-mode) */
     putcrs16(KEYS, getcrs16(KEYS) | 020000);
   /* NOTE: this EQ test prevents reusing the ADD code :( */
   if (getcrs32s(L) == 0)              /* set EQ? */
-    SETEQ; 
+    SETEQ;
   if (((~utempa ^ m) & (utempa ^ getcrs16(A))) & 0x8000) {
     if (getcrs32s(L) >= 0)
       SETLT;
@@ -9590,7 +9602,7 @@ d_subdsb:  /* 00700 */
   if (utempl & 0x10000)                  /* set L-bit if carry */
     putcrs16(KEYS, getcrs16(KEYS) | 020000);
   if (getcrs32s(L) == 0)              /* set EQ? */
-    SETEQ; 
+    SETEQ;
   if (((utempa ^ m) & (utempa ^ getcrs16(A))) & 0x8000) {
     if (getcrs32s(L) >= 0)
       SETLT;
@@ -9642,9 +9654,9 @@ d_cas:  /* 01100 */
   utempl += 1;
   putcrs16(A, utempl);                   /* truncate results */
   if (utempl & 0x10000)                  /* set L-bit if carry */
-    putcrs16(KEYS, getcrs16(KEYS) | 020000);  
+    putcrs16(KEYS, getcrs16(KEYS) | 020000);
   if (getcrs16(A) == 0)                  /* set EQ? */
-    SETEQ; 
+    SETEQ;
   if (((utempa ^ m) & (utempa ^ getcrs16(A))) & 0x8000) {
     if (getcrs16s(A) >= 0)
       SETLT;
@@ -9941,7 +9953,7 @@ d_fad:  /* 00601 */
       tempa1 = getcrs16(FEXP);
       tempa2 = immu64 & 0xffff;
       if (abs(tempa1-tempa2) < 48)
-        if (prieee8(getfr64(2), &tempd1) 
+        if (prieee8(getfr64(2), &tempd1)
             && prieee8(immu64, &tempd2)
             && ieeepr8(tempd1+tempd2, (long long *)(crsl+FAC1), 0))
           CLEARC;
@@ -9969,7 +9981,7 @@ d_fdv:  /* 01701 */
   immu64 = ((immu64 << 32) & 0xffffff0000000000LL) | (immu64 & 0xff);
   if (immu64 & 0xFFFFFFFF00000000LL)
     if (getgr32s(FAC1))
-      if (prieee8(immu64, &tempd2) 
+      if (prieee8(immu64, &tempd2)
           && prieee8(getfr64(2), &tempd1)
           && ieeepr8(tempd1/tempd2, (long long *)(crsl+FAC1), 1))
         CLEARC;
@@ -9994,7 +10006,7 @@ d_fmp:  /* 01601 */
     immu64 = get32(ea);
     immu64 = ((immu64 << 32) & 0xffffff0000000000LL) | (immu64 & 0xff);
     if (immu64 & 0xFFFFFFFF00000000LL)
-      if (prieee8(immu64, &tempd2) 
+      if (prieee8(immu64, &tempd2)
           && prieee8(getfr64(2), &tempd1)
           && ieeepr8(tempd1*tempd2, (long long *)(crsl+FAC1), 0))
         CLEARC;
@@ -10015,7 +10027,7 @@ d_fsb:  /* 00701 */
       tempa1 = getcrs16(FEXP);
       tempa2 = immu64 & 0xffff;
       if (abs(tempa1-tempa2) < 48)
-        if (prieee8(getfr64(2), &tempd1) 
+        if (prieee8(getfr64(2), &tempd1)
             && prieee8(immu64, &tempd2)
             && ieeepr8(tempd1-tempd2, (long long *)(crsl+FAC1), 0))
           CLEARC;
@@ -10054,7 +10066,7 @@ d_dfad:  /* 0602 */
   immu64 = get64(ea);
   if (immu64 & 0xFFFFFFFF00000000LL)
     if (getgr32s(FAC1))
-      if (prieee8(getfr64(2), &tempd1) 
+      if (prieee8(getfr64(2), &tempd1)
           && prieee8(immu64, &tempd2)
           && ieeepr8(tempd1+tempd2, (long long *)(crsl+FAC1), 0)) {
         CLEARC;
@@ -10080,7 +10092,7 @@ d_dfdv:  /* 01702 */
     immu64 = get64(ea);
   if (immu64 & 0xFFFFFFFF00000000LL)
     if (getgr32s(FAC1))
-      if (prieee8(immu64, &tempd2) 
+      if (prieee8(immu64, &tempd2)
           && prieee8(getfr64(2), &tempd1)
           && ieeepr8(tempd1/tempd2, (long long *)(crsl+FAC1), 1)) {
         CLEARC;
@@ -10109,7 +10121,7 @@ d_dfmp:  /* 01602 */
   if (getgr32s(FAC1)) {
     immu64 = get64(ea);
     if (immu64 & 0xFFFFFFFF00000000LL)
-      if (prieee8(immu64, &tempd2) 
+      if (prieee8(immu64, &tempd2)
           && prieee8(getfr64(2), &tempd1)
           && ieeepr8(tempd1*tempd2, (long long *)(crsl+FAC1), 0)) {
         CLEARC;
@@ -10128,7 +10140,7 @@ d_dfsb:  /* 0702 */
   immu64 = get64(ea);
   if (immu64 & 0xFFFFFFFF00000000LL)
     if (getgr32s(FAC1))
-      if (prieee8(getfr64(2), &tempd1) 
+      if (prieee8(getfr64(2), &tempd1)
           && prieee8(immu64, &tempd2)
           && ieeepr8(tempd1-tempd2, (long long *)(crsl+FAC1), 0)) {
         CLEARC;

emdev.h

@@ -51,7 +51,7 @@
    '50 = #1 HSSMLC/MDLC (synchronous comm)
    '51 = #2 HSSMLC/MDLC
 *  '52 = #3 AMLC or ICS1
-*  '53 = #2 AMLC 
+*  '53 = #2 AMLC
 *  '54 = #1 AMLC
    '55 = MACI autocall unit
    '56 = old SMLC (RTOS User Guide, A-1 & Hacker's Guide)
@@ -229,7 +229,7 @@ int devnone (int class, int func, int device) {
    OCP '0604 = enable transmit DMA/C
    OCP '0704 = reset transmit interrupt mask and DMA/C enable
    OCP '1004 = Full duplex; software must echo
-   OCP '1104 = output a sync pulse (diagnostics) 
+   OCP '1104 = output a sync pulse (diagnostics)
    OCP '1204 = Prime normal, independent xmit and recv w/echoplex
    OCP '1304 = Self test mode (internally connects transmitter to receiver)
    OCP '1504 = Set both xmit & rcv interrupt masks
@@ -302,7 +302,7 @@ int devasr (int class, int func, int device) {
   int doblock;
   time_t unixtime;
   struct tm *tms;
-  
+
   doblock = BLOCKIO;
 
   switch (class) {
@@ -330,7 +330,7 @@ int devasr (int class, int func, int device) {
       perror(" unable to get tty attributes");
       fatal(NULL);
     }
-    
+
     /* save initial terminal setup to restore when exiting */
 
     origterminfo = terminfo;
@@ -497,7 +497,7 @@ readasr:
           goto readasr;
         }
 #endif
-        
+
         /* if doing local echo, do xon/xoff processing here.  If Unix
            does it, the emulator might block on a console write.  If
            the console is running full-duplex (no local echo), we can
@@ -650,7 +650,7 @@ readasr:
 
 /* Device '14 - magtape controller #1
 
-   NOTES: 
+   NOTES:
 
    This code only supports 1 tape controller (4 units), but could be
    extended to support 2 controllers (eg, see disk controller code)
@@ -863,7 +863,7 @@ fmterr:
       *mtstat |= 0x100;        /* set filemark status */
       goto repo;
     }
-    
+
     /* ignore attempts to backspace over error records.  This will
        cause Magsav to read the next record instead, and it may
        recover.  Re-reading the error record 10 times won't help! */
@@ -881,7 +881,7 @@ fmterr:
     }
 
     /* read leading reclen again to make sure we're positioned correctly */
-      
+
     n = read(fd, buf, 4);
     if (n == -1) goto readerr;
     if (n != 4) {
@@ -974,7 +974,7 @@ int devmt (int class, int func, int device) {
       enabled = 1;
       if (interrupting == 1)              /* if interrupt is pending */
         devpoll[device] = 10;             /* try to interrupt soon */
-      
+
     } else if (func == 016) {             /* reset interrupt mask */
       enabled = 0;
 
@@ -1092,7 +1092,7 @@ int devmt (int class, int func, int device) {
         } else
           unit[u].mtstat = 0x00C8;   /* Ready, Online, BOT */
       }
-      
+
       /* "select only" is ignored.  On a real tape controller, this
        blocks (I think) if the previous tape operation is in progress */
 
@@ -1276,12 +1276,12 @@ int devmt (int class, int func, int device) {
       }
       IOSKIP;
       break;
-        
+
     } else if (func == 02) {
       ready = 1;
       if (getcrs16(A) & 0x8000) {      /* status word 1 */
         datareg = unit[usel].mtstat;
-        
+
         /* if the tape was rewinding, return rewinding status once, then
            change it to BOT */
 
@@ -1413,7 +1413,9 @@ void initclock(ea_t datnowea) {
   unixtime = time(NULL);
   tms = localtime(&unixtime);
   datnow = tms->tm_year<<25 | (tms->tm_mon+1)<<21 | tms->tm_mday<<16 | ((tms->tm_hour*3600 + tms->tm_min*60 + tms->tm_sec)/4);
-  put32r0(datnow, datnowea);
+  if (! noclock) {
+    put32r0(datnow, datnowea);
+  }
 }
 
 
@@ -1438,7 +1440,7 @@ int devcp (int class, int func, int device) {
 
   case -1:
 
-    /* if -map is used, lookup DATNOW symbol and set the 32-bit 
+    /* if -map is used, lookup DATNOW symbol and set the 32-bit
        Primos time value (DATNOW+TIMNOW) */
 
     datnowea = 0;
@@ -1455,10 +1457,10 @@ int devcp (int class, int func, int device) {
       ;
 
     } else if (func == 01) {    /* ack PIC interrupt */
-      ; 
+      ;
 
     } else if (func == 02) {    /* stop LFC (IO.PNC DIAG) */
-      ; 
+      ;
 
     } else if (func == 04) {    /* does something on VCP during boot */
       ;
@@ -1581,7 +1583,7 @@ int devcp (int class, int func, int device) {
           previnstcount = gv.instcount;
           if (datnowea != 0)
             initclock(datnowea);
-        } 
+        }
         elapsedms = (tv.tv_sec-start_tv.tv_sec)*1000.0 + (tv.tv_usec-start_tv.tv_usec)/1000.0;
         targetticks = elapsedms/(-clkpic*clkrate/1000);
 #if 0
@@ -1595,7 +1597,7 @@ int devcp (int class, int func, int device) {
            available (no Primos maps), then we have to tick our way to
            the correct time.  In addition to lowering overhead, slower
            clock tick rates make catching up much faster.
-           
+
            When ticking faster, we need to be careful not to tick too
            fast, because that will cause timed events like disk I/O to
            timeout prematurely.  With rev 20 Primos, setting the
@@ -1812,7 +1814,7 @@ int devdisk (int class, int func, int device) {
       dc[dx].unit[u].modrecs = NULL;
     }
     return 0;
-      
+
   case 0:
     TRACE(T_INST|T_DIO, " OCP '%2o%2o\n", func, device);
     if (func == 016) {                /* reset interrupt */
@@ -2017,7 +2019,7 @@ int devdisk (int class, int func, int device) {
             }
             dmaaddr = ((getar16(REGDMX16+dmareg) & 3)<<16) | getar16(REGDMX16+dmareg+1);
             TRACE(T_INST|T_DIO,  " DMA channels: nch-1=%d, ['%o]='%o, ['%o]='%o, nwords=%d\n", dc[dx].dmanch, dc[dx].dmachan, swap16(regs.sym.regdmx[dmareg]), dc[dx].dmachan+1, dmaaddr, dmanw);
-            
+
             if (order == 5) {    /* read */
               if (getcrs16(MODALS) & 020)  /* mapped read */
                 if ((dmaaddr & 01777) || dmanw > 1024)
@@ -2078,7 +2080,7 @@ int devdisk (int class, int func, int device) {
         }
         TRACE(T_INST|T_DIO, " seek track %d, restore=%d, clear=%d\n", track, (m1 & 0100000) != 0, (m1 & 040000) != 0);
 #if 0
-        /* this has been disabled because SCSI drives sometimes seek to 
+        /* this has been disabled because SCSI drives sometimes seek to
            track 512 (special meaning in controller?) */
 
         if (track > dc[dx].unit[u].maxtrack) {

fp.h

@@ -40,6 +40,7 @@ http://tima-cmp.imag.fr/~guyot/Cours/Oparithm/english/Op_Ar2.htm
 
 inline void getdp (unsigned long long p, long long *frac64, int *exp32) {
 
+  TRACE(T_FP, "  getdp(%016llx)\n", p);
   *frac64 = p & 0xFFFFFFFFFFFF0000LL;  /* unpack fraction */
   *exp32 = (short) (p & 0xFFFFLL);     /* unpack SIGNED exponent */
 }
@@ -59,22 +60,29 @@ int prieee8(unsigned long long dp, double *d) {
   /* unpack Prime DPFP */
 
   getdp (dp, &frac64, &exp32);
+  TRACE(T_FP, "  prieee8: unpacked frac %016llx exp %08x\n", frac64, exp32);
 
   /* if negative, change to sign-magnitude */
 
   sign = 0;
   if (frac64 < 0) {
+    TRACE(T_FP, "  prieee8: changing to sign-magnitude\n");
 
     /* special case: negative power of 2 */
 
     if (frac64 == 0x8000000000000000LL) {
+      TRACE(T_FP, "  prieee8: frac is negative power of 2\n");
       exp32 += (1023-128);
       if (exp32 < 0 || exp32 > 0x7fe)
+      {
+        TRACE(T_FP, "  prieee8: exp %x out of range\n", exp32);
         return 0;
+      }
       frac64 |= ((long long)exp32 << 52);
       *d = *(double *)&frac64;
       return 1;
     } else {
+      TRACE(T_FP, "  prieee8: frac is just negative\n");
       sign = 0x8000000000000000LL;
       frac64 = -frac64;
     }
@@ -82,13 +90,15 @@ int prieee8(unsigned long long dp, double *d) {
   /* special case: zero */
 
   } else if (frac64 == 0) {
+    TRACE(T_FP, "  prieee8: frac is 0\n");
     *d = 0.0;
     return 1;
-  } 
+  }
 
   /* normalize positive fraction until bit 2 is 1 */
 
   while ((frac64 & 0x4000000000000000LL) == 0) {
+    TRACE(T_FP, "  prieee8: normalizing positive fraction\n");
     frac64 = frac64 << 1;
     exp32--;
   }
@@ -98,7 +108,10 @@ int prieee8(unsigned long long dp, double *d) {
   exp32 += (1023-128) - 1;
 #if 1
   if (exp32 < 0 || exp32 > 0x7fe)
+  {
+    TRACE(T_FP, "  prieee8: exponent %x out of range\n", exp32);
     return 0;
+  }
 #else
   if (exp32 < 0) {
     *d = 0.0;
@@ -113,6 +126,7 @@ int prieee8(unsigned long long dp, double *d) {
   /* pack into an IEEE DPFP, losing the leading 1 bit in the process */
 
   frac64 = sign | ((long long)exp32 << 52) | ((frac64 >> 10) & 0xfffffffffffffLL);
+  TRACE(T_FP, "  prieee8: packed ieee dpfp %016llx\n", frac64);
   *d = *(double *)&frac64;
   return 1;
 }
@@ -134,7 +148,7 @@ retry:
   neg = frac64 < 0;
   exp32 = (frac64 >> 52) & 0x7ff;
   frac64 &= 0xfffffffffffffLL;
-  //printf("dp=%llx, neg=%d, frac64=%llx, exp32=%d, \n", *(long long *)dp, neg, frac64, exp32);
+  TRACE(T_FP, "d=%016llx, neg=%x, frac64=%016llx, exp32=%08x, \n", (long long)d, neg, frac64, exp32);
 
   /* special case: NaN & +-infinity */
 
@@ -159,12 +173,21 @@ retry:
      and subnormal */
 
   if (exp32 != 0)           /* typical IEEE normalized */
+  {
+    TRACE(T_FP, "  ieeepr8: is normalized\n");
     frac64 |= 0x10000000000000LL;
-  else if (frac64 == 0) {   /* IEEE +-0.0 (zero exp+frac) */
+  }
+  else if (frac64 == 0)     /* IEEE +-0.0 (zero exp+frac) */
+  {
+    TRACE(T_FP, "  ieeepr8: zero exp and frac\n");
     *p = 0;                 /* IEEE and Prime zero are the same */
     return okay;
-  } else
+  }
+  else
+  {
+    TRACE(T_FP, "  ieeepr8: subnormal value\n");
       ;                     /* subnormal: no hidden 1 bit */
+  }
 
   /* adjust exponent, change sign-magnitude to 2's complement,
      and shift fraction into Prime placement (high 48 bits) */
@@ -173,12 +196,14 @@ retry:
   if (neg)
     frac64 = -frac64;
   frac64 <<= 10;
+  TRACE(T_FP, "  ieeepr8: de-biased prime-ised frac %016llx exp %08x\n", frac64, exp32);
 
   /* normalize Prime DPFP */
 
   while ((frac64 ^ (frac64 << 1)) >= 0) {
     frac64 = frac64 << 1;
     exp32--;
+    TRACE(T_FP, "  ieeepr8: normalized prime frac %016llx exp %08x\n", frac64, exp32);
   }
 
 #if 0
@@ -204,8 +229,11 @@ retry:
 
   if (round)
     if ((frac64 & 0x8000) && ((frac64 & 0x7fffffffffff0000LL) !=  0x7fffffffffff0000LL))
+    {
       /* XXX: should this be a subtract for negative numbers? */
       frac64 += 0x10000;
+      TRACE(T_FP, "  ieeepr8: rounded frac %016llx\n", frac64);
+    }
 
   *p = swap64((frac64 & 0xffffffffffff0000LL) | (exp32 & 0xffff));
   return okay;
@@ -260,6 +288,7 @@ unsigned long long dfcm (unsigned long long dp, int *oflow) {
   CLEARC;
   *oflow = 0;
   getdp(dp, &frac64, &exp32);
+  TRACE(T_FP, "  dfcm: unpacked frac %016llx exp %08x\n", frac64, exp32);
   if (frac64 != 0) {                          /* can't normalize zero */
     if (frac64 == 0x8000000000000000LL) {     /* overflow case? */
       frac64 = 0x4000000000000000LL;          /* complement power of 2 */
@@ -290,6 +319,7 @@ unsigned long long norm(unsigned long long dp, int *oflow) {
 
   *oflow = 0;
   getdp(dp, &frac64, &exp32);
+  TRACE(T_FP, "  norm: unpacked frac %016llx exp %08x\n", frac64, exp32);
   while ((frac64 ^ (frac64 << 1)) >= 0) {
     frac64 = frac64 << 1;
     exp32--;
@@ -314,11 +344,16 @@ unsigned long long frn(unsigned long long dp, int *oflow) {
 
   *oflow = 0;
   getdp(dp, &frac64, &exp32);
+  TRACE(T_FP, "  frn: unpacked frac %016llx exp %08x\n", frac64, exp32);
   if (frac64 == 0)
+  {
+    TRACE(T_FP, "  frn: returning 0\n");
     return 0;
+  }
   else {
     doround1 = ((frac64 & 0x18000000000LL) != 0);
     doround2 = ((frac64 &  0x8000000000LL) != 0) && ((frac64 & 0x7FFFFF0000LL) != 0);
+    TRACE(T_FP, "  frn: doround1 %x doround2 %x\n", doround1, doround2);
     if (doround1 || doround2) {
       frac64 &= 0xFFFFFF0000000000LL;
       if (frac64 != 0x7FFFFF0000000000LL)
@@ -329,8 +364,10 @@ unsigned long long frn(unsigned long long dp, int *oflow) {
       }
       frac64 |= (exp32 & 0xFFFF);
       frac64 = norm(frac64, oflow);
+      TRACE(T_FP, "  frn: rounded frac %016llx\n", frac64);
       return frac64;
     }
+    TRACE(T_FP, "  frn: dp %016llx\n", dp);
     return dp;
   }
 }
@@ -356,26 +393,37 @@ int fcs (unsigned long long fac, int fop) {
   fop = fop & 0xffffff00;
   if (fop == 0)                                      /* fix dirty zero */
     fopexp = 0;
+  TRACE(T_FP, "  fcs: FAC: %016llx %04x; op: %016llx %04x\n", templ, facexp, fop, fopexp);
   if ((templ & 0x80000000) == (fop & 0x80000000)) {  /* compare signs */
     if (facexp == fopexp)                            /* compare exponents */
       if (templ == fop) {                            /* compare fractions */
+        TRACE(T_FP, "  fcs: frac cmp returning eq / skip 1\n");
         SETEQ;
         return 1;
       } else if (templ < fop) {                      /* compare fractions */
+        TRACE(T_FP, "  fcs: frac cmp returning lt / skip 2\n");
         SETLT;                                       /* FAC < operand */
         return 2;
-      } else
+      } else {
+        TRACE(T_FP, "  fcs: frac cmp returning gt / skip 0\n");
         return 0;                                    /* FAC > operand */
+      }
     else if (facexp < fopexp) {                      /* compare exponents */
+      TRACE(T_FP, "  fcs: exp cmp returning lt / skip 2\n");
       SETLT;                                         /* FAC < operand */
       return 2;
-    } else
+    } else {
+      TRACE(T_FP, "  fcs: exp cmp returning gt / skip 0\n");
       return 0;
+    }
   } else if (templ & 0x80000000) {
+    TRACE(T_FP, "  fcs: sign cmp returning lt / skip 2\n");
     SETLT;                                           /* FAC < operand */
     return 2;
-  } else
+  } else {
+    TRACE(T_FP, "  fcs: sign cmp returning gt / skip 0\n");
     return 0;                                        /* FAC > operand */
+  }
 }
 
 
@@ -386,7 +434,7 @@ int fcs (unsigned long long fac, int fop) {
 
    NOTE: This code doesn't pass Prime diagnostics for higher model
    CPU's, I'm guessing because comparison is implemented as subtract,
-   and we can't do that because numbers with huge exponents (and 
+   and we can't do that because numbers with huge exponents (and
    Prime ASCII characters in the DAC) won't convert to IEEE.
 */
 
@@ -404,27 +452,35 @@ int dfcs (unsigned long long fac, long long fop) {
   fop = fop & 0xffffffffffff0000LL;
   if (fop == 0)                                      /* fix dirty zero */
     fopexp = 0;
-#if 0
+  TRACE(T_FP, "  dfcs: FAC: %016llx %04x; op: %016llx %04x\n", templl, facexp, fop, fopexp);
-  printf("dfcs: FAC: %016llx %04x; op: %016llx %04x\n", templl, facexp, fop, fopexp);
-#endif
   if ((templl & 0x8000000000000000LL) == (fop & 0x8000000000000000LL)) {  /* compare signs */
     if (facexp == fopexp)                            /* compare exponents */
       if (templl == fop) {                           /* compare fractions */
+        TRACE(T_FP, "  dfcs: frac cmp returning eq / skip 1\n");
         SETEQ;
         return 1;
       } else if (templl < fop) {                     /* compare fractions */
+        TRACE(T_FP, "  dfcs: frac cmp returning lt / skip 2\n");
         SETLT;                                       /* FAC < operand */
         return 2;
-      } else
+      } else {
+        TRACE(T_FP, "  dfcs: frac cmp returning gt / skip 0\n");
         return 0;                                    /* FAC > operand */
+      }
     else if (facexp < fopexp) {                      /* compare exponents */
+      TRACE(T_FP, "  dfcs: exp cmp returning lt / skip 2\n");
       SETLT;                                         /* FAC < operand */
       return 2;
-    } else
+    } else {
+      TRACE(T_FP, "  dfcs: exp cmp returning eq / skip 1\n");
       return 0;
+    }
   } else if (templl & 0x8000000000000000LL) {
+    TRACE(T_FP, "  dfcs: sign cmp returning lt / skip 2\n");
     SETLT;                                           /* FAC < operand */
     return 2;
-  } else
+  } else {
+    TRACE(T_FP, "  dfcs: sign cmp returning gt / skip 0\n");
     return 0;                                        /* FAC > operand */
+  }
 }

util/utextp.c

@@ -1,5 +1,5 @@
 /* utextp.c, Jim Wilcoxson, March 16, 2005
-   Reads a Unix text file and converts it to a compressed Prime text file. 
+   Reads a Unix text file and converts it to a compressed Prime text file.
    This means:
    - turn high bit on
    - expand Unix tabs to spaces
@@ -29,7 +29,7 @@ main () {
     else {                    /* not a space character */
       while (space) {         /* dump held-back spaces first */
 	if (space < 3) {      /* write regular spaces */
-	  putchar(' ');
+	  putchar(0240);
 	  space--;
 	  n++;
 	} else {              /* write compressed spaces */