Notes For V3.7

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.

PDP8/pdp8_cpu.c

@@ -1,6 +1,6 @@
 /* pdp8_cpu.c: PDP-8 CPU simulator
 
-   Copyright (c) 1993-2006, Robert M Supnik
+   Copyright (c) 1993-2007, Robert M Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -25,6 +25,7 @@
 
    cpu          central processor
 
+   28-Apr-07    RMS     Removed clock initialization
    30-Oct-06    RMS     Added idle and infinite loop detection
    30-Sep-06    RMS     Fixed SC value after DVI overflow (found by Don North)
    22-Sep-05    RMS     Fixed declarations (from Sterling Garwood)
@@ -244,7 +245,6 @@ extern int32 sim_int_char;
 extern uint32 sim_brk_types, sim_brk_dflt, sim_brk_summ; /* breakpoint info */
 extern DEVICE *sim_devices[];
 extern FILE *sim_log;
-extern UNIT clk_unit, ttix_unit;
 extern t_bool sim_idle_enab;
 
 t_stat cpu_ex (t_value *vptr, t_addr addr, UNIT *uptr, int32 sw);
@@ -338,8 +338,6 @@ LAC = saved_LAC & 017777;
 MQ = saved_MQ & 07777;
 int_req = INT_UPDATE;
 reason = 0;
-sim_rtcn_init (clk_unit.wait, TMR_CLK);                 /* init clk calib */
-sim_rtcn_init (ttix_unit.wait, TMR_TTX);                /* init ttx calib */
 
 /* Main instruction fetch/decode loop */
 

PDP8/pdp8_lp.c

@@ -1,6 +1,6 @@
 /* pdp8_lp.c: PDP-8 line printer simulator
 
-   Copyright (c) 1993-2005, Robert M Supnik
+   Copyright (c) 1993-2007, Robert M Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -25,6 +25,7 @@
 
    lpt          LP8E line printer
 
+   19-Jan-07    RMS     Added UNIT_TEXT
    25-Apr-03    RMS     Revised for extended file support
    04-Oct-02    RMS     Added DIB, enable/disable, device number support
    30-May-02    RMS     Widened POS to 32b
@@ -54,7 +55,7 @@ t_stat lpt_detach (UNIT *uptr);
 DIB lpt_dib = { DEV_LPT, 1, { &lpt } };
 
 UNIT lpt_unit = {
-    UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT
+    UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 0), SERIAL_OUT_WAIT
     };
 
 REG lpt_reg[] = {
@@ -135,16 +136,17 @@ t_stat lpt_svc (UNIT *uptr)
 {
 dev_done = dev_done | INT_LPT;                          /* set done */
 int_req = INT_UPDATE;                                   /* update interrupts */
-if ((lpt_unit.flags & UNIT_ATT) == 0) {
+if ((uptr->flags & UNIT_ATT) == 0) {
     lpt_err = 1;
     return IORETURN (lpt_stopioe, SCPE_UNATT);
     }
-if (putc (lpt_unit.buf, lpt_unit.fileref) == EOF) {
+fputc (uptr->buf, uptr->fileref);                       /* print char */
+uptr->pos = ftell (uptr->fileref);
+if (ferror (uptr->fileref)) {                           /* error? */
     perror ("LPT I/O error");
-    clearerr (lpt_unit.fileref);
+    clearerr (uptr->fileref);
     return SCPE_IOERR;
     }
-lpt_unit.pos = lpt_unit.pos + 1;
 return SCPE_OK;
 }