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simh-testsetgenerator/PDP18B/pdp18b_defs.h
Bob Supnik 701f0fe028 Notes For V2.8 
1. New Features

1.1 Directory and documentation

- Only common files (SCP and libraries) are in the top level
  directory.  Individual simulator files are in their individual
  directories.
- simh_doc.txt has been split up.  simh_doc.txt now documents
  only SCP.  The individual simulators are documented in separate
  text files in their own directories.
- mingw_build.bat is a batch file for the MINGW/gcc environment
  that will build all the simulators, assuming the root directory
  structure is at c:\sim.
- Makefile is a UNIX make file for the gcc environment that will
  build all the simulators, assuming the root directory is at
  c:\sim.

1.2 SCP

- DO <file name> executes the SCP commands in the specified file.
- Replicated registers in unit structures can now be declared as
  arrays for examine, modify, save, and restore.  Most replicated
  unit registers (for example, mag tape position registers) have
  been changed to arrays.
- The ADD/REMOVE commands have been replaced by SET unit ONLINE
  and SET unit OFFLINE, respectively.
- Register names that are unique within an entire simulator do
  not have to be prefaced with the device name.
- The ATTACH command can attach files read only, either under
  user option (-r), or because the attached file is ready only.
- The SET/SHOW capabilities have been extended.  New forms include:

	SET <dev> param{=value}{ param ...}
	SET <unit> param{=value}{ param ...}
	SHOW <dev> {param param ...}
	SHOW <unit> {param param ...}

- Multiple breakpoints have been implemented.  Breakpoints are
  set/cleared/displayed by:

	BREAK addr_list{[count]}
	NOBREAK addr_list
	SHOW BREAK addr_list

1.3 PDP-11 simulator

- Unibus map implemented, with 22b RP controller (URH70) or 18b
  RP controller (URH11) (in debug).
- All DMA peripherals rewritten to use map.
- Many peripherals modified for source sharing with VAX.
- RQDX3 implemented.
- Bugs fixed in RK11 and RL11 write check.

1.4 PDP-10 simulator

- ITS 1-proceed implemented.
- Bugs fixed in ITS PC sampling and LPMR

1.5 18b PDP simulator

- Interrupts split out to multiple levels to allow easier
  expansion.

1.5 IBM System 3 Simulator

- Written by Charles (Dutch) Owen.

1.6 VAX Simulator (in debug)

- Simulates MicroVAX 3800 (KA655) with 16MB-64MB memory, RQDX3,
  RLV12, TSV11, DZV11, LPV11, PCV11.
- CDROM capability has been added to the RQDX3, to allow testing
  with VMS hobbyist images.

1.7 SDS 940 Simulator (not tested)

- Simulates SDS 940, 16K-64K memory, fixed and moving head
  disk, magtape, line printer, console.

1.8 Altair Z80

- Revised from Charles (Dutch) Owen's original by Peter Schorn.
- MITS 8080 with full Z80 simulation.
- 4K and 8K BASIC packages, Prolog package.

1.9 Interdata

The I4 simulator has been withdrawn for major rework.  Look for
a complete 16b/32b Interdata simulator sometime next year.

2. Release Notes

2.1 SCP

SCP now allows replicated registers in unit structures to be
modelled as arrays.  All replicated register declarations have
been replaced by register array declarations.  As a result,
save files from prior revisions will generate errors after
restoring main memory.

2.2 PDP-11

The Unibus map code is in debug.  The map was implemented primarily
to allow source sharing with the VAX, which requires a DMA map.
DMA devices work correctly with the Unibus map disabled.

The RQDX3 simulator has run a complete RSTS/E SYSGEN, with multiple
drives, and booted the completed system from scratch.

2.3 VAX

The VAX simulator will run the boot code up to the >>> prompt.  It
can successfully process a SHOW DEVICE command.  It runs the HCORE
instruction diagnostic.  It can boot the hobbyist CD through SYSBOOT
and through the date/time dialog and restore the hobbyist CD, using
standalone backup.  On the boot of the restored disk, it gets to the
date/time dialog, and then crashes.

2.4 SDS 940

The SDS 940 is untested, awaiting real code.

2.5 GCC Optimization

At -O2 and above, GCC does not correctly compile the simulators which
use setjmp-longjmp (PDP-11, PDP-10, VAX).  A working hypothesis is
that optimized state maintained in registers is being used in the
setjmp processing routine.  On the PDP-11 and PDP-10, all of this
state has been either made global, or volatile, to encourage GCC to
keep the state up to date in memory.  The VAX is still vulnerable.

3. Work list

3.1 SCP

- Better ENABLE/DISABLE.

3.2 PDP-11 RQDX3

Software mapped mode, RCT read simulation, VMS debug.
2011-04-15 08:33:38 -07:00

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/* pdp18b_defs.h: 18b PDP simulator definitions
Copyright (c) 1993-2001, 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"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not
be used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
25-Nov-01 RMS Revised interrupt structure
27-May-01 RMS Added second Teletype support
21-Jan-01 RMS Added DECtape support
14-Apr-99 RMS Changed t_addr to unsigned
02-Jan-96 RMS Added fixed head and moving head disks
31-Dec-95 RMS Added memory management
19-Mar-95 RMS Added dynamic memory size
The author gratefully acknowledges the help of Craig St. Clair and
Deb Tevonian in locating archival material about the 18b PDP's, and of
Al Kossow and Max Burnet in making documentation and software available.
*/
#include "sim_defs.h" /* simulator defns */
/* Models: only one should be defined
model memory CPU options I/O options
PDP4 8K ??Type 18 EAE Type 65 KSR-28 Teletype (Baudot)
integral paper tape reader
Type 75 paper tape punch
integral real time clock
Type 62 line printer (Hollerith)
PDP7 32K Type 177 EAE Type 649 KSR-33 Teletype
Type 148 mem extension Type 444 paper tape reader
Type 75 paper tape punch
integral real time clock
Type 647B line printer (sixbit)
Type 24 serial drum
PDP9 32K KE09A EAE KSR-33 Teletype
KF09A auto pri intr PC09A paper tape reader and punch
KG09B mem extension integral real time clock
KP09A power detection Type 647D/E line printer (sixbit)
KX09A mem protection RF09/RS09 fixed head disk
TC59 magnetic tape
TC02/TU55 DECtape
LT09A second Teletype
PDP15 128K KE15 EAE KSR-35 Teletype
KA15 auto pri intr PC15 paper tape reader and punch
KF15 power detection KW15 real time clock
KM15 mem protection LP15 line printer
??KT15 mem relocation RP15 disk pack
RF15/RF09 fixed head disk
TC59D magnetic tape
TC15/TU56 DECtape
LT15 second Teletype
??Indicates not implemented. The PDP-4 manual refers to both an EAE
??and a memory extension control; there is no documentation on either.
*/
#if !defined (PDP4) && !defined (PDP7) && !defined (PDP9) && !defined (PDP15)
#define PDP9 0 /* default to PDP-9 */
#endif
/* Simulator stop codes */
#define STOP_RSRV 1 /* must be 1 */
#define STOP_HALT 2 /* HALT */
#define STOP_IBKPT 3 /* breakpoint */
#define STOP_XCT 4 /* nested XCT's */
#define STOP_API 5 /* invalid API int */
/* Peripheral configuration */
#if defined (PDP4)
#define ADDRSIZE 13
#define KSR28 0 /* Baudot terminal */
#define TYPE62 0 /* Hollerith printer */
#elif defined (PDP7)
#define ADDRSIZE 15
#define TYPE647 0 /* sixbit printer */
#define DRM 0 /* drum */
#elif defined (PDP9)
#define ADDRSIZE 15
#define TYPE647 0 /* sixbit printer */
#define RF 0 /* fixed head disk */
#define MTA 0 /* magtape */
#define DTA 0 /* DECtape */
#define TTY1 0 /* second Teletype */
#define BRMASK 0076000 /* bounds mask */
#elif defined (PDP15)
#define ADDRSIZE 17
#define LP15 0 /* ASCII printer */
#define RF 0 /* fixed head disk */
#define RP 0 /* disk pack */
#define MTA 0 /* magtape */
#define DTA 0 /* DECtape */
#define TTY1 0 /* second Teletype */
#define BRMASK 0377400 /* bounds mask */
#endif
/* Memory */
#define ADDRMASK ((1 << ADDRSIZE) - 1) /* address mask */
#define IAMASK 077777 /* ind address mask */
#define BLKMASK (ADDRMASK & (~IAMASK)) /* block mask */
#define MAXMEMSIZE (1 << ADDRSIZE) /* max memory size */
#define MEMSIZE (cpu_unit.capac) /* actual memory size */
#define MEM_ADDR_OK(x) (((t_addr) (x)) < MEMSIZE)
/* Architectural constants */
#define DMASK 0777777 /* data mask */
#define LINK (DMASK + 1) /* link */
#define LACMASK (LINK | DMASK) /* link + data */
#define SIGN 0400000 /* sign bit */
#define OP_JMS 0100000 /* JMS */
#define OP_JMP 0600000 /* JMP */
#define OP_HLT 0740040 /* HLT */
/* IOT subroutine return codes */
#define IOT_V_SKP 18 /* skip */
#define IOT_V_REASON 19 /* reason */
#define IOT_SKP (1 << IOT_V_SKP)
#define IOT_REASON (1 << IOT_V_REASON)
#define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */
/* Interrupt system
The interrupt system can be modelled on either the flag driven system
of the PDP-4 and PDP-7 or the API driven system of the PDP-9 and PDP-15.
If flag based, API is hard to implement; if API based, IORS requires
extra code for implementation. I've chosen an API based model.
API channel Device API priority Notes
00 software 4 4
01 software 5 5
02 software 6 6
03 software 7 7
04 TC02/TC15 1
05 TC59D 1
06 drum 1 PDP-9 only
07 disk 1 PDP-9 only
10 paper tape reader 2
11 real time clock 3
12 power fail 0
13 memory parity 0
14 display 2
15 card reader 2
16 line printer 2
17 A/D converter 0
20 interprocessor buffer 3
21 360 link 3 PDP-9 only
22 data phone 2 PDP-15 only
23 RF09/RF15 1
24 RP15 1 PDP-15 only
25 plotter 1 PDP-15 only
26 -
27 -
30 -
31 -
32 -
33 -
34 LT15 TTO 3 PDP-15 only
35 LT15 TTI 3 PDP-15 only
36 -
37 -
*/
#define API_HLVL 4 /* hwre levels */
#define ACH_SWRE 040 /* swre int vec */
/* API level 0 */
#define INT_V_PWRFL 0 /* powerfail */
#define INT_PWRFL (1 << INT_V_PWRFL)
#define API_PWRFL 0
#define ACH_PWRFL 052
/*API level 1 */
#define INT_V_DTA 0 /* DECtape */
#define INT_V_MTA 1 /* magtape */
#define INT_V_DRM 2 /* drum */
#define INT_V_RF 3 /* fixed head disk */
#define INT_V_RP 4 /* disk pack */
#define INT_DTA (1 << INT_V_DTA)
#define INT_MTA (1 << INT_V_MTA)
#define INT_DRM (1 << INT_V_DRM)
#define INT_RF (1 << INT_V_RF)
#define INT_RP (1 << INT_V_RP)
#define API_DTA 1
#define API_MTA 1
#define API_DRM 1
#define API_RF 1
#define API_RP 1
#define ACH_DTA 044
#define ACH_MTA 045
#define ACH_DRM 046
#define ACH_RF 063
#define ACH_RP 064
/* API level 2 */
#define INT_V_PTR 0 /* paper tape reader */
#define INT_V_LPT 1 /* line printer */
#define INT_V_LPTSPC 2 /* line printer spc */
#define INT_PTR (1 << INT_V_PTR)
#define INT_LPT (1 << INT_V_LPT)
#define INT_LPTSPC (1 << INT_V_LPTSPC)
#define API_PTR 2
#define API_LPT 2
#define API_LPTSPC 2
#define ACH_PTR 050
#define ACH_LPT 056
/* API level 3 */
#define INT_V_CLK 0 /* clock */
#define INT_V_TTI1 1 /* LT15 keyboard */
#define INT_V_TTO1 2 /* LT15 output */
#define INT_CLK (1 << INT_V_CLK)
#define INT_TTI1 (1 << INT_V_TTI1)
#define INT_TTO1 (1 << INT_V_TTO1)
#define API_CLK 3
#define API_TTI1 3
#define API_TTO1 3
#define ACH_CLK 051
#define ACH_TTI1 075
#define ACH_TTO1 074
/* PI level */
#define INT_V_TTI 0 /* console keyboard */
#define INT_V_TTO 1 /* console output */
#define INT_V_PTP 2 /* paper tape punch */
#define INT_TTI (1 << INT_V_TTI)
#define INT_TTO (1 << INT_V_TTO)
#define INT_PTP (1 << INT_V_PTP)
#define API_TTI 4 /* PI level */
#define API_TTO 4
#define API_PTP 4
/* Interrupt macros */
#define SET_INT(dv) int_hwre[API_##dv] = int_hwre[API_##dv] | INT_##dv
#define CLR_INT(dv) int_hwre[API_##dv] = int_hwre[API_##dv] & ~INT_##dv
#define TST_INT(dv) (int_hwre[API_##dv] & INT_##dv)
/* I/O status flags for the IORS instruction
bit PDP-4 PDP-7 PDP-9 PDP-15
0 intr on intr on intr on intr on
1 tape rdr flag* tape rdr flag* tape rdr flag* tape rdr flag*
2 tape pun flag* tape pun flag* tape pun flag* tape pun flag*
3 keyboard flag* keyboard flag* keyboard flag* keyboard flag*
4 type out flag* type out flag* type out flag* type out flag*
5 display flag* display flag* light pen flag* light pen flag*
6 clk ovflo flag* clk ovflo flag* clk ovflo flag* clk ovflo flag*
7 clk enable flag clk enable flag clk enable flag clk enable flag
8 mag tape flag* mag tape flag* tape rdr empty* tape rdr empty*
9 card rdr col* * tape pun empty tape pun empty
10 card rdr ~busy DECtape flag* DECtape flag*
11 card rdr error magtape flag* magtape flag*
12 card rdr EOF disk pack flag*
13 card pun row* DECdisk flag* DECdisk flag*
14 card pun error lpt flag*
15 lpt flag* lpt flag* lpt flag*
16 lpt space flag* lpt error flag lpt error flag
17 drum flag* drum flag*
*/
#define IOS_ION 0400000 /* interrupts on */
#define IOS_PTR 0200000 /* tape reader */
#define IOS_PTP 0100000 /* tape punch */
#define IOS_TTI 0040000 /* keyboard */
#define IOS_TTO 0020000 /* terminal */
#define IOS_LPEN 0010000 /* light pen */
#define IOS_CLK 0004000 /* clock */
#define IOS_CLKON 0002000 /* clock enable */
#define IOS_DTA 0000200 /* DECtape */
#define IOS_RP 0000040 /* disk pack */
#define IOS_RF 0000020 /* fixed head disk */
#define IOS_DRM 0000001 /* drum */
#if defined (PDP4) || defined (PDP7)
#define IOS_MTA 0001000 /* magtape */
#define IOS_LPT 0000004 /* line printer */
#define IOS_LPT1 0000002 /* line printer stat */
#elif defined (PDP9)
#define IOS_PTRERR 0001000 /* reader empty */
#define IOS_PTPERR 0000400 /* punch empty */
#define IOS_MTA 0000100 /* magtape */
#define IOS_LPT 0000004 /* line printer */
#define IOS_LPT1 0000002 /* line printer stat */
#elif defined (PDP15)
#define IOS_PTRERR 0001000 /* reader empty */
#define IOS_PTPERR 0000400 /* punch empty */
#define IOS_MTA 0000100 /* magtape */
#define IOS_LPT 0000010 /* line printer */
#endif
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