Notes For V3.7-0

1. New Features

1.1 3.7-0

1.1.1 SCP

- Added SET THROTTLE and SET NOTHROTTLE commands to regulate simulator
  execution rate and host resource utilization.
- Added idle support (based on work by Mark Pizzolato).
- Added -e to control error processing in nested DO commands (from
  Dave Bryan).

1.1.2 HP2100

- Added Double Integer instructions, 1000-F CPU, and Floating Point
  Processor (from Dave Bryan).
- Added 2114 and 2115 CPUs, 12607B and 12578A DMA controllers, and
  21xx binary loader protection (from Dave Bryan).

1.1.3 Interdata

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state.

1.1.4 PDP-11

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state (WAIT instruction executed).
- Added TA11/TU60 cassette support.

1.1.5 PDP-8

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state (keyboard poll loop or jump-to-self).
- Added TA8E/TU60 cassette support.

1.1.6 PDP-1

- Added support for 16-channel sequence break system.
- Added support for PDP-1D extended features and timesharing clock.
- Added support for Type 630 data communications subsystem.

1.1.6 PDP-4/7/9/15

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state (keyboard poll loop or jump-to-self).

1.1.7 VAX, VAX780

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state (more than 200 cycles at IPL's 0, 1, or 3 in kernel mode).

1.1.8 PDP-10

- Added SET IDLE and SET NOIDLE commands to idle the simulator in wait
  state (operating system dependent).
- Added CD20 (CD11) support.

2. Bugs Fixed

Please see the revision history on http://simh.trailing-edge.com or
in the source module sim_rev.h.

I7094/i7094_cpu.c

@@ -25,6 +25,8 @@
 
    cpu          7094 central processor
 
+   29-Oct-06    RMS     Added additional expanded core instructions
+   17-Oct-06    RMS     Fixed the fix in halt IO wait loop
    16-Jun-06    RMS     Fixed bug in halt IO wait loop
 
    The register state for the 7094 is:
@@ -1576,11 +1578,22 @@ while (reason == SCPE_OK) {                             /* loop until error */
             reason = op_mse (ea);
             break;
 
-        case 01761:                                     /* (CTSS) SEA, SEB */
+        case 01761:                                     /* (CTSS) ext core */
             if (prot_trap (0)) break;                   /* user mode? */
-            if (ea == 041) data_base = 0;
-            else if (ea == 042) data_base = BCORE_BASE;
-            else if (stop_illop) reason = STOP_ILLEG;
+            if (ea == 041)                              /* SEA? */
+                data_base = 0;
+            else if (ea == 042)                         /* SEB? */
+                data_base = BCORE_BASE;
+            else if (ea == 043) {                       /* IFT? */
+                if (inst_base == 0)
+                    PC = (PC + 1) & eamask;
+                }
+            else if (ea == 044) {                       /* EFT? */
+                if (data_base == 0)
+                    PC = (PC + 1) & eamask;
+                }
+            else if (stop_illop)
+                reason = STOP_ILLEG;
             break;
 
         case 01763:                                     /* LGL */
@@ -1775,7 +1788,7 @@ while (reason == SCPE_OK) {                             /* loop until error */
                 if (r = sim_process_event ()) return r; /* process events */
                 chtr_pend = chtr_eval (NULL);           /* eval chan traps */
                 while (ch_req) {                        /* until no ch req */
-                    for (j = 0; i < NUM_CHAN; j++) {    /* loop thru channels */
+                    for (j = 0; j < NUM_CHAN; j++) {    /* loop thru channels */
                         if (ch_req & REQ_CH (j)) {      /* channel request? */
                             if (r = ch_proc (j)) return r;
                             }

I7094/i7094_sys.c

@@ -23,6 +23,7 @@
    used in advertising or otherwise to promote the sale, use or other dealings
    in this Software without prior written authorization from Robert M Supnik.
 
+   29-Oct-06    RMS     Added additional expanded core instructions
    08-Jun-06    RMS     Added Dave Pitts' binary loader
 */
 
@@ -362,6 +363,7 @@ static const char *opcode[] = {
  "TIA", "TIB",
  "LRI", "LPI",
  "SEA", "SEB",
+ "IFT", "EFT",
 
  "IOCD", "IOCDN", "TCH",
  "IORP", "IORPN",
@@ -523,6 +525,7 @@ static const t_uint64 opc_v[] = {
  0010100000000+I_MXN, 0410100000000+I_MXN,
  0056200000000+I_MXN, 0456400000000+I_MXN,
  0476100000041+I_SNS, 0476100000042+I_SNS,
+ 0476100000043+I_SNS, 0476100000044+I_SNS,
 
  01000000000000+I_IOX, 01000000200000+I_IOX, 01100000000000+I_TCH,
  01200000000000+I_IOX, 01200000200000+I_IOX,