Notes For V3.0-1

RESTRICTION: The FP15 and XVM features of the PDP-15 are only partially
debugged.  Do NOT enable these features for normal operations.

1. New Features in 3.0-1

1.1 PDP-1

- Added block loader format support to LOAD.
- Changed BOOT PTR to allow loading of all of the first bank of memory.

1.2 PDP-18b Family

- Added PDP-4 EAE support.
- Added PDP-15 FP15 support.
- Added PDP-15 XVM support.
- Added PDP-15 "re-entrancy ECO".
- Added PDP-7, PDP-9, PDP-15 hardware RIM loader support in BOOT PTR.

2. Bugs Fixed in 3.0-1

2.1 PDP-11/VAX

- Fixed bug in user disk size (found by Chaskiel M Grundman).

2.2 PDP-1

- Updated CPU, line printer, standard devices to detect indefinite I/O wait.
- Fixed incorrect logical, missing activate, break in drum simulator.
- Fixed bugs in instruction decoding, overprinting for line printer.

2.3 PDP-10

- Fixed bug in RP read header.

2.4 PDP-18b Family

- Fixed bug in PDP-4 line printer overprinting.
- Fixed bug in PDP-15 memory protect/skip interaction.
- Fixed bug in RF set size routine.
- Increased PTP TIME for PDP-15 operating systems.

2.5 PDP-8

- Fixed bug in DF, RF set size routine.

2.6 Nova

- Fixed bug in DSK set size routine.

2.7 1401

- Revised fetch to model hardware more closely.

2.8 Ibm1130

- Fixed bugs found by APL 1130.

2.9 Altairz80

- Fixed bug in real-time clock on Windows host.

2.10 HP2100

-- Fixed DR drum sizes.
-- Fixed DR variable capacity interaction with SAVE/RESTORE.

3. New Features in 3.0 vs prior releases

3.1 SCP and Libraries

- Added ASSIGN/DEASSIGN (logical name) commands.
- Changed RESTORE to unconditionally detach files.
- Added E11 and TPC format support to magtape library.
- Fixed bug in SHOW CONNECTIONS.
- Added USE_ADDR64 support

3.2 All magtapes

- Magtapes support SIMH format, E11 format, and TPC format (read only).
- SET <tape_unit> FORMAT=format sets the specified tape unit's format.
- SHOW <tape_unit> FORMAT displays the specified tape unit's format.
- Tape format can also be set as part of the ATTACH command, using
  the -F switch.

3.3 VAX

- VAX can be compiled without USE_INT64.
- If compiled with USE_INT64 and USE_ADDR64, RQ and TQ controllers support
  files > 2GB.
- VAX ROM has speed control (SET ROM DELAY/NODELAY).

4. Bugs Fixed in 3.0 vs prior releases

4.1 VAX

- Fixed CVTfi bug: integer overflow not set if exponent out of range
- Fixed EMODx bugs:
  o First and second operands reversed
  o Separated fraction received wrong exponent
  o Overflow calculation on separated integer incorrect
  o Fraction not set to zero if exponent out of range
- Fixed interval timer and ROM access to pass power-up self-test even on very
  fast host processors (fixes from Mark Pizzolato).

4.2 1401

- Fixed mnemonic, instruction lengths, and reverse scan length check bug for MCS.
- Fixed MCE bug, BS off by 1 if zero suppress.
- Fixed chaining bug, D lost if return to SCP.
- Fixed H branch, branch occurs after continue.
- Added check for invalid 8 character MCW, LCA.
- Fixed magtape load-mode end of record response.

4.3 Nova

- Fixed DSK variable size interaction with restore.

4.4 PDP-1

- Fixed DT variable size interaction with restore.

4.5 PDP-11

- Fixed DT variable size interaction with restore.
- Fixed bug in MMR1 update (found by Tim Stark).
- Added XQ features and fixed bugs:
  o Corrected XQ interrupts on IE state transition (code by Tom Evans).
  o Added XQ interrupt clear on soft reset.
  o Removed XQ interrupt when setting XL or RL (multiple people).
  o Added SET/SHOW XQ STATS.
  o Added SHOW XQ FILTERS.
  o Added ability to split received packet into multiple buffers.
  o Added explicit runt and giant packet processing.

4.6 PDP-18B

- Fixed DT, RF variable size interaction with restore.
- Fixed MT bug in MTTR.

4.7 PDP-8

- Fixed DT, DF, RF, RX variable size interaction with restore.
- Fixed MT bug in SKTR.

4.8 HP2100

- Fixed bug in DP (13210A controller only), DQ read status.
- Fixed bug in DP, DQ seek complete.

4.9 GRI

- Fixed bug in SC queue pointer management.

PDP10/pdp10_doc.txt

@@ -40,15 +40,17 @@ To compile the PDP-10, you must define VM_PDP10 and USE_INT64 as part of the
 compilation command line.
 
 sim/		sim_defs.h
+		sim_ether.h
 		sim_rev.h
 		sim_sock.h
+		sim_tape.h
 		sim_tmxr.h
-		sim_ether.h
 		scp.c
 		scp_tty.c
-		sim_sock.c
-		sim_tmxr.c
 		sim_ether.c
+		sim_sock.c
+		sim_tape.c
+		sim_tmxr.c
 
 sim/pdp10/	pdp10_defs.h
 		pdp10_cpu.c
@@ -117,11 +119,14 @@ the file format to try to determine the file type.
 
 The CPU options allow the user to specify standard microcode, standard
 microcode with a bug fix for a boostrap problem in TOPS-20 V4.1, or ITS
-microcode
+microcode:
 
 	SET CPU STANDARD	Standard microcode
 	SET CPU TOPS20V41	Standard microcode with TOPS-20 V4.1 bug fix
 	SET CPU ITS		ITS compatible microcode
+
+The CPU implements a SHOW command to display the I/O space address map:
+
 	SHOW CPU IOSPACE	show I/O space address map
 
 CPU registers include the visible state of the processor as well as the
@@ -200,7 +205,7 @@ The front end is the system console.  The keyboard input is unit 0,
 the console output is unit 1.  It supports two options:
 
 	SET FE STOP		halts the PDP-10 operating system
-	SET FE CTLC		simulates typing ^C (for Windoze)
+	SET FE CTLC		simulates typing ^C
 
 The front end has the following registers:
 
@@ -333,7 +338,10 @@ the port to be used:
 where port is a decimal number between 1 and 65535 that is not being used
 for other TCP/IP activities.  The optional switch -m turns on the DZ11's
 modem controls; the optional switch -a turns on active disconnects
-(disconnect session if computer clears Data Terminal Ready).
+(disconnect session if computer clears Data Terminal Ready).  Without
+modem control, the DZ behaves as though terminals were directly connected;
+disconnecting the Telnet session does not cause any operating system-
+visible change in line status.
 
 Once the DZ is attached and the simulator is running, the DZ will listen
 for connections on the specified port.  It assumes that the incoming
@@ -526,8 +534,6 @@ locked, single or double density, or autosized:
 	SET RYn DOUBLE		set unit n double density (default)
 	SET RYn AUTOSIZE	set unit n autosized
 
-The RX211 supports the BOOT command, but only for double density.
-
 The floppy disk requires an unsupported driver under TOPS-10 and
 is not supported under TOPS-20 or ITS.
 

PDP10/pdp10_rp.c

@@ -25,6 +25,7 @@
 
    rp		RH/RP/RM moving head disks
 
+   23-Jul-03	RMS	Fixed bug in read header stub
    25-Apr-03	RMS	Revised for extended file support
    21-Nov-02	RMS	Fixed bug in bootstrap (reported by Michael Thompson)
    29-Sep-02	RMS	Added variable vector support
@@ -834,14 +835,14 @@ case FNC_READH:						/* read headers */
 		vpn = PAG_GETVPN (pa10);		/* map addr */
 		if ((vpn >= UMAP_MEMSIZE) || (ba & XBA_MBZ) || (rpwc & XWC_MBZ) ||
 	          ((ubmap[0][vpn] & (UMAP_VLD | UMAP_DSB | UMAP_RRV)) != UMAP_VLD)) {
-			rpcs2 = rpcs2 | CS2_NEM;	/* set error */
-			ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
-			break;  }
+		    rpcs2 = rpcs2 | CS2_NEM;		/* set error */
+		    ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
+		    break;  }
 		mpa10 = (ubmap[0][vpn] + PAG_GETOFF (pa10)) & PAMASK;
 		if (MEM_ADDR_NXM (mpa10)) {		/* nx memory? */
-			rpcs2 = rpcs2 | CS2_NEM;	/* set error */
-			ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
-			break;  }
+		    rpcs2 = rpcs2 | CS2_NEM;		/* set error */
+		    ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
+		    break;  }
 		dbuf[twc10] = M[mpa10];			/* write to disk */
 		if ((rpcs2 & CS2_UAI) == 0) ba = ba + 4;  }
 	    if (fc10 = twc10 & (RP_NUMWD - 1)) {	/* fill? */
@@ -850,7 +851,7 @@ case FNC_READH:						/* read headers */
 	    fxwrite (dbuf, sizeof (d10), twc10 + fc10, uptr->fileref);
 	    err = ferror (uptr->fileref);
 	    }						/* end if */
-	else {						/* read, wchk */
+	else {						/* read, wchk, readh */
 	    awc10 = fxread (dbuf, sizeof (d10), wc10, uptr->fileref);
 	    err = ferror (uptr->fileref);
 	    for ( ; awc10 < wc10; awc10++) dbuf[awc10] = 0;
@@ -859,18 +860,20 @@ case FNC_READH:						/* read headers */
 		vpn = PAG_GETVPN (pa10);		/* map addr */
 		if ((vpn >= UMAP_MEMSIZE) || (ba & XBA_MBZ) || (rpwc & XWC_MBZ) ||
 	          ((ubmap[0][vpn] & (UMAP_VLD | UMAP_DSB | UMAP_RRV)) != UMAP_VLD)) {
-			rpcs2 = rpcs2 | CS2_NEM;	/* set error */
-			ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
-			break;  }
+		    rpcs2 = rpcs2 | CS2_NEM;		/* set error */
+		    ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
+		    break;  }
 		mpa10 = (ubmap[0][vpn] + PAG_GETOFF (pa10)) & PAMASK;
 		if (MEM_ADDR_NXM (mpa10)) {		/* nx memory? */
-			rpcs2 = rpcs2 | CS2_NEM;	/* set error */
-			ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
-			break;  }
-		if (uptr->FUNC == FNC_READ) M[mpa10] = dbuf[twc10];
-		else if (M[mpa10] != dbuf[twc10]) {
-			rpcs2 = rpcs2 | CS2_WCE;	/* set error */
-			break;  }
+		    rpcs2 = rpcs2 | CS2_NEM;		/* set error */
+		    ubcs[0] = ubcs[0] | UBCS_TMO;	/* UBA times out */
+		    break;  }
+		if ((uptr->FUNC == FNC_READ) ||		/* read or */
+		    (uptr->FUNC == FNC_READH))		/* read header */
+		     M[mpa10] = dbuf[twc10];
+		else if (M[mpa10] != dbuf[twc10]) {	/* wchk, mismatch? */
+		     rpcs2 = rpcs2 | CS2_WCE;		/* set error */
+		     break;  }
 		if ((rpcs2 & CS2_UAI) == 0) ba = ba + 4;  }
 	    }						/* end else */