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simh-testsetgenerator/PDP11/pdp11_sys.c
Bob Supnik 2c2dd5ea33 Notes For V2.10-0 
WARNING: V2.10 has reorganized and renamed some of the definition
files for the PDP-10, PDP-11, and VAX.  Be sure to delete all
previous source files before you unpack the Zip archive, or
unpack it into a new directory structure.

WARNING: V2.10 has a new, more comprehensive save file format.
Restoring save files from previous releases will cause 'invalid
register' errors and loss of CPU option flags, device enable/
disable flags, unit online/offline flags, and unit writelock
flags.

WARNING: If you are using Visual Studio .NET through the IDE,
be sure to turn off the /Wp64 flag in the project settings, or
dozens of spurious errors will be generated.

WARNING: Compiling Ethernet support under Windows requires
extra steps; see the Ethernet readme file.  Ethernet support is
currently available only for Windows, Linux, NetBSD, and OpenBSD.

1. New Features

1.1 SCP and Libraries

- The VT emulation package has been replaced by the capability
  to remote the console to a Telnet session.  Telnet clients
  typically have more complete and robust VT100 emulation.
- Simulated devices may now have statically allocated buffers,
  in addition to dynamically allocated buffers or disk-based
  data stores.
- The DO command now takes substitutable arguments (max 9).
  In command files, %n represents substitutable argument n.
- The initial command line is now interpreted as the command
  name and substitutable arguments for a DO command.  This is
  backward compatible to prior versions.
- The initial command line parses switches.  -Q is interpreted
  as quiet mode; informational messages are suppressed.
- The HELP command now takes an optional argument.  HELP <cmd>
  types help on the specified command.
- Hooks have been added for implementing GUI-based consoles,
  as well as simulator-specific command extensions.  A few
  internal data structures and definitions have changed.
- Two new routines (tmxr_open_master, tmxr_close_master) have
  been added to sim_tmxr.c.  The calling sequence for
  sim_accept_conn has been changed in sim_sock.c.
- The calling sequence for the VM boot routine has been modified
  to add an additional parameter.
- SAVE now saves, and GET now restores, controller and unit flags.
- Library sim_ether.c has been added for Ethernet support.

1.2 VAX

- Non-volatile RAM (NVR) can behave either like a memory or like
  a disk-based peripheral.  If unattached, it behaves like memory
  and is saved and restored by SAVE and RESTORE, respectively.
  If attached, its contents are loaded from disk by ATTACH and
  written back to disk at DETACH and EXIT.
- SHOW <device> VECTOR displays the device's interrupt vector.
  A few devices allow the vector to be changed with SET
  <device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape) has been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from vax_stddev.c and
  now references a common implementation file, dec_pt.h.
- Examine and deposit switches now work on all devices, not just
  the CPU.
- Device address conflicts are not detected until simulation starts.

1.3 PDP-11

- SHOW <device> VECTOR displays the device's interrupt vector.
  Most devices allow the vector to be changed with SET
  <device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape), RK611/RK06/RK07 (cartridge disk),
  RX211 (double density floppy), and KW11P programmable clock
  have been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from pdp11_stddev.c and
  now references a common implementation file, dec_pt.h.
- Device bootstraps now use the actual CSR specified by the
  SET ADDRESS command, rather than just the default CSR.  Note
  that PDP-11 operating systems may NOT support booting with
  non-standard addresses.
- Specifying more than 256KB of memory, or changing the bus
  configuration, causes all peripherals that are not compatible
  with the current bus configuration to be disabled.
- Device address conflicts are not detected until simulation starts.

1.4 PDP-10

- SHOW <device> VECTOR displays the device's interrupt vector.
  A few devices allow the vector to be changed with SET
  <device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The RX211 (double density floppy) has been added; it is off
  by default.
- The paper tape now references a common implementation file,
  dec_pt.h.
- Device address conflicts are not detected until simulation starts.

1.5 PDP-1

- DECtape (then known as MicroTape) support has been added.
- The line printer and DECtape can be disabled and enabled.

1.6 PDP-8

- The RX28 (double density floppy) has been added as an option to
  the existing RX8E controller.
- SHOW <device> DEVNO displays the device's device number.  Most
  devices allow the device number to be changed with SET <device>
  DEVNO=nnn.
- Device number conflicts are not detected until simulation starts.

1.7 IBM 1620

- The IBM 1620 simulator has been released.

1.8 AltairZ80

- A hard drive has been added for increased storage.
- Several bugs have been fixed.

1.9 HP 2100

- The 12845A has been added and made the default line printer (LPT).
  The 12653A has been renamed LPS and is off by default.  It also
  supports the diagnostic functions needed to run the DCPC and DMS
  diagnostics.
- The 12557A/13210A disk defaults to the 13210A (7900/7901).
- The 12559A magtape is off by default.
- New CPU options (EAU/NOEAU) enable/disable the extended arithmetic
  instructions for the 2116.  These instructions are standard on
  the 2100 and 21MX.
- New CPU options (MPR/NOMPR) enable/disable memory protect for the
  2100 and 21MX.
- New CPU options (DMS/NODMS) enable/disable the dynamic mapping
  instructions for the 21MX.
- The 12539 timebase generator autocalibrates.

1.10 Simulated Magtapes

- Simulated magtapes recognize end of file and the marker
  0xFFFFFFFF as end of medium.  Only the TMSCP tape simulator
  can generate an end of medium marker.
- The error handling in simulated magtapes was overhauled to be
  consistent through all simulators.

1.11 Simulated DECtapes

- Added support for RT11 image file format (256 x 16b) to DECtapes.

2. Release Notes

2.1 Bugs Fixed

- TS11/TSV05 was not simulating the XS0_MOT bit, causing failures
  under VMS.  In addition, two of the CTL options were coded
  interchanged.
- IBM 1401 tape was not setting a word mark under group mark for
  load mode reads.  This caused the diagnostics to crash.
- SCP bugs in ssh_break and set_logon were fixed (found by Dave
  Hittner).
- Numerous bugs in the HP 2100 extended arithmetic, floating point,
  21MX, DMS, and IOP instructions were fixed.  Bugs were also fixed
  in the memory protect and DMS functions.  The moving head disks
  (DP, DQ) were revised to simulate the hardware more accurately.
  Missing functions in DQ (address skip, read address) were added.

2.2 HP 2100 Debugging

- The HP 2100 CPU nows runs all of the CPU diagnostics.
- The peripherals run most of the peripheral diagnostics.  There
  is still a problem in overlapped seek operation on the disks.
  See the file hp2100_diag.txt for details.

3. In Progress

These simulators are not finished and are available in a separate
Zip archive distribution.

- Interdata 16b/32b: coded, partially tested.  See the file
  id_diag.txt for details.
- SDS 940: coded, partially tested.
2011-04-15 08:33:49 -07:00

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/* pdp11_sys.c: PDP-11 simulator interface
Copyright (c) 1993-2002, 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.
17-Oct-02 RMS Fixed bugs in branch, SOB address parsing
09-Oct-02 RMS Added DELQA support
12-Sep-02 RMS Added TMSCP, KW11P, RX211 support, RAD50 examine
29-Nov-01 RMS Added read only unit support
17-Sep-01 RMS Removed multiconsole support
26-Aug-01 RMS Added DZ11
20-Aug-01 RMS Updated bad block inquiry
17-Jul-01 RMS Fixed warning from VC++ 6.0
27-May-01 RMS Added multiconsole support
05-Apr-01 RMS Added support for TS11/TSV05
14-Mar-01 RMS Revised load/dump interface (again)
11-Feb-01 RMS Added DECtape support
30-Oct-00 RMS Added support for examine to file
14-Apr-99 RMS Changed t_addr to unsigned
09-Nov-98 RMS Fixed assignments of ROR/ROL (John Wilson)
27-Oct-98 RMS V2.4 load interface
08-Oct-98 RMS Fixed bug in bad block routine
30-Mar-98 RMS Fixed bug in floating point display
12-Nov-97 RMS Added bad block table routine
*/
#include "pdp11_defs.h"
#include <ctype.h>
extern DEVICE cpu_dev;
extern DEVICE ptr_dev, ptp_dev;
extern DEVICE tti_dev, tto_dev;
extern DEVICE lpt_dev;
extern DEVICE clk_dev, pclk_dev;
extern DEVICE dz_dev;
extern DEVICE rk_dev, rl_dev;
extern DEVICE hk_dev;
extern DEVICE rx_dev, ry_dev;
extern DEVICE rp_dev;
extern DEVICE rq_dev, rqb_dev, rqc_dev, rqd_dev;
extern DEVICE dt_dev;
extern DEVICE tm_dev, ts_dev;
extern DEVICE tq_dev;
extern DEVICE xq_dev;
extern UNIT cpu_unit;
extern REG cpu_reg[];
extern uint16 *M;
extern int32 saved_PC;
/* SCP data structures and interface routines
sim_name simulator name string
sim_PC pointer to saved PC register descriptor
sim_emax number of words for examine
sim_devices array of pointers to simulated devices
sim_stop_messages array of pointers to stop messages
sim_load binary loader
*/
char sim_name[] = "PDP-11";
REG *sim_PC = &cpu_reg[0];
int32 sim_emax = 4;
DEVICE *sim_devices[] = {
&cpu_dev,
&ptr_dev,
&ptp_dev,
&tti_dev,
&tto_dev,
&lpt_dev,
&clk_dev,
&pclk_dev,
&dz_dev,
&rk_dev,
&rl_dev,
&hk_dev,
&rx_dev,
&ry_dev,
&rp_dev,
&rq_dev,
&rqb_dev,
&rqc_dev,
&rqd_dev,
&dt_dev,
&tm_dev,
&ts_dev,
&tq_dev,
&xq_dev,
NULL };
const char *sim_stop_messages[] = {
"Unknown error",
"Red stack trap",
"Odd address trap",
"Memory management trap",
"Non-existent memory trap",
"Parity error trap",
"Privilege trap",
"Illegal instruction trap",
"BPT trap",
"IOT trap",
"EMT trap",
"TRAP trap",
"Trace trap",
"Yellow stack trap",
"Powerfail trap",
"Floating point exception",
"HALT instruction",
"Breakpoint",
"Wait state",
"Trap vector fetch abort",
"Trap stack push abort",
"RQDX3 consistency error",
"Sanity timer expired" };
/* Binary loader.
Loader format consists of blocks, optionally preceded, separated, and
followed by zeroes. Each block consists of:
001 ---
xxx |
lo_count |
hi_count |
lo_origin > count bytes
hi_origin |
data byte |
: |
data byte ---
checksum
If the byte count is exactly six, the block is the last on the tape, and
there is no checksum. If the origin is not 000001, then the origin is
the PC at which to start the program.
*/
t_stat sim_load (FILE *fileref, char *cptr, char *fnam, int flag)
{
int32 csum, count, state, i;
t_addr origin;
if ((*cptr != 0) || (flag != 0)) return SCPE_ARG;
state = csum = 0;
while ((i = getc (fileref)) != EOF) {
csum = csum + i; /* add into chksum */
switch (state) {
case 0: /* leader */
if (i == 1) state = 1;
else csum = 0;
break;
case 1: /* ignore after 001 */
state = 2;
break;
case 2: /* low count */
count = i;
state = 3;
break;
case 3: /* high count */
count = (i << 8) | count;
state = 4;
break;
case 4: /* low origin */
origin = i;
state = 5;
break;
case 5: /* high origin */
origin = (i << 8) | origin;
if (count == 6) {
if (origin != 1) saved_PC = origin & 0177776;
return SCPE_OK; }
count = count - 6;
state = 6;
break;
case 6: /* data */
if (origin >= MEMSIZE) return SCPE_NXM;
M[origin >> 1] = (origin & 1)?
(M[origin >> 1] & 0377) | (i << 8):
(M[origin >> 1] & 0177400) | i;
origin = origin + 1;
count = count - 1;
state = state + (count == 0);
break;
case 7: /* checksum */
if (csum & 0377) return SCPE_CSUM;
csum = state = 0;
break; } /* end switch */
} /* end while */
return SCPE_FMT; /* unexpected eof */
}
/* Factory bad block table creation routine
This routine writes a DEC standard 044 compliant bad block table on the
last track of the specified unit. The bad block table consists of 10
repetitions of the same table, formatted as follows:
words 0-1 pack id number
words 2-3 cylinder/sector/surface specifications
:
words n-n+1 end of table (-1,-1)
Inputs:
uptr = pointer to unit
sec = number of sectors per surface
wds = number of words per sector
Outputs:
sta = status code
*/
t_stat pdp11_bad_block (UNIT *uptr, int32 sec, int32 wds)
{
int32 i, da;
int16 *buf;
if ((sec < 2) || (wds < 16)) return SCPE_ARG;
if ((uptr->flags & UNIT_ATT) == 0) return SCPE_UNATT;
if (uptr->flags & UNIT_RO) return SCPE_RO;
if (!get_yn ("Create bad block table on last track? [N]", FALSE)) return SCPE_OK;
da = (uptr->capac - (sec * wds)) * sizeof (int16);
if (fseek (uptr->fileref, da, SEEK_SET)) return SCPE_IOERR;
if ((buf = malloc (wds * sizeof (int16))) == NULL) return SCPE_MEM;
buf[0] = buf[1] = 012345u;
buf[2] = buf[3] = 0;
for (i = 4; i < wds; i++) buf[i] = 0177777u;
for (i = 0; (i < sec) && (i < 10); i++)
fxwrite (buf, sizeof (int16), wds, uptr->fileref);
free (buf);
if (ferror (uptr->fileref)) return SCPE_IOERR;
return SCPE_OK;
}
/* Symbol tables */
#define I_V_L 16 /* long mode */
#define I_V_D 17 /* double mode */
#define I_L (1 << I_V_L)
#define I_D (1 << I_V_D)
/* Warning: for literals, the class number MUST equal the field width!! */
#define I_V_CL 18 /* class bits */
#define I_M_CL 017 /* class mask */
#define I_V_NPN 0 /* no operands */
#define I_V_REG 1 /* reg */
#define I_V_SOP 2 /* operand */
#define I_V_3B 3 /* 3b literal */
#define I_V_FOP 4 /* flt operand */
#define I_V_AFOP 5 /* fac, flt operand */
#define I_V_6B 6 /* 6b literal */
#define I_V_BR 7 /* cond branch */
#define I_V_8B 8 /* 8b literal */
#define I_V_SOB 9 /* reg, disp */
#define I_V_RSOP 10 /* reg, operand */
#define I_V_ASOP 11 /* fac, operand */
#define I_V_ASMD 12 /* fac, moded int op */
#define I_V_DOP 13 /* double operand */
#define I_V_CCC 14 /* CC clear */
#define I_V_CCS 15 /* CC set */
#define I_NPN (I_V_NPN << I_V_CL)
#define I_REG (I_V_REG << I_V_CL)
#define I_3B (I_V_3B << I_V_CL)
#define I_SOP (I_V_SOP << I_V_CL)
#define I_FOP (I_V_FOP << I_V_CL)
#define I_6B (I_V_6B << I_V_CL)
#define I_BR (I_V_BR << I_V_CL)
#define I_8B (I_V_8B << I_V_CL)
#define I_AFOP (I_V_AFOP << I_V_CL)
#define I_ASOP (I_V_ASOP << I_V_CL)
#define I_RSOP (I_V_RSOP << I_V_CL)
#define I_SOB (I_V_SOB << I_V_CL)
#define I_ASMD (I_V_ASMD << I_V_CL)
#define I_DOP (I_V_DOP << I_V_CL)
#define I_CCC (I_V_CCC << I_V_CL)
#define I_CCS (I_V_CCS << I_V_CL)
static const int32 masks[] = {
0177777, 0177770, 0177700, 0177770,
0177700+I_D, 0177400+I_D, 0177700, 0177400,
0177400, 0177000, 0177000, 0177400,
0177400+I_D+I_L, 0170000, 0177777, 0177777 };
static const char *opcode[] = {
"HALT","WAIT","RTI","BPT",
"IOT","RESET","RTT","MFPT",
"JMP","RTS","SPL",
"NOP","CLC","CLV","CLV CLC",
"CLZ","CLZ CLC","CLZ CLV","CLZ CLV CLC",
"CLN","CLN CLC","CLN CLV","CLN CLV CLC",
"CLN CLZ","CLN CLZ CLC","CLN CLZ CLC","CCC",
"NOP","SEC","SEV","SEV SEC",
"SEZ","SEZ SEC","SEZ SEV","SEZ SEV SEC",
"SEN","SEN SEC","SEN SEV","SEN SEV SEC",
"SEN SEZ","SEN SEZ SEC","SEN SEZ SEC","SCC",
"SWAB","BR","BNE","BEQ",
"BGE","BLT","BGT","BLE",
"JSR",
"CLR","COM","INC","DEC",
"NEG","ADC","SBC","TST",
"ROR","ROL","ASR","ASL",
"MARK","MFPI","MTPI","SXT",
"CSM", "TSTSET","WRTLCK",
"MOV","CMP","BIT","BIC",
"BIS","ADD",
"MUL","DIV","ASH","ASHC",
"XOR",
"FADD","FSUB","FMUL","FDIV",
"L2DR",
"MOVC","MOVRC","MOVTC",
"LOCC","SKPC","SCANC","SPANC",
"CMPC","MATC",
"ADDN","SUBN","CMPN","CVTNL",
"CVTPN","CVTNP","ASHN","CVTLN",
"L3DR",
"ADDP","SUBP","CMPP","CVTPL",
"MULP","DIVP","ASHP","CVTLP",
"MOVCI","MOVRCI","MOVTCI",
"LOCCI","SKPCI","SCANCI","SPANCI",
"CMPCI","MATCI",
"ADDNI","SUBNI","CMPNI","CVTNLI",
"CVTPNI","CVTNPI","ASHNI","CVTLNI",
"ADDPI","SUBPI","CMPPI","CVTPLI",
"MULPI","DIVPI","ASHPI","CVTLPI",
"SOB",
"BPL","BMI","BHI","BLOS",
"BVC","BVS","BCC","BCS",
"BHIS","BLO", /* encode only */
"EMT","TRAP",
"CLRB","COMB","INCB","DECB",
"NEGB","ADCB","SBCB","TSTB",
"RORB","ROLB","ASRB","ASLB",
"MTPS","MFPD","MTPD","MFPS",
"MOVB","CMPB","BITB","BICB",
"BISB","SUB",
"CFCC","SETF","SETI","SETD","SETL",
"LDFPS","STFPS","STST",
"CLRF","CLRD","TSTF","TSTD",
"ABSF","ABSD","NEGF","NEGD",
"MULF","MULD","MODF","MODD",
"ADDF","ADDD","LDF","LDD",
"SUBF","SUBD","CMPF","CMPD",
"STF","STD","DIVF","DIVD",
"STEXP",
"STCFI","STCDI","STCFL","STCDL",
"STCFD","STCDF",
"LDEXP",
"LDCIF","LDCID","LDCLF","LDCLD",
"LDCFD","LDCDF",
NULL };
static const int32 opc_val[] = {
0000000+I_NPN, 0000001+I_NPN, 0000002+I_NPN, 0000003+I_NPN,
0000004+I_NPN, 0000005+I_NPN, 0000006+I_NPN, 0000007+I_NPN,
0000100+I_SOP, 0000200+I_REG, 0000230+I_3B,
0000240+I_CCC, 0000241+I_CCC, 0000242+I_CCC, 0000243+I_NPN,
0000244+I_CCC, 0000245+I_NPN, 0000246+I_NPN, 0000247+I_NPN,
0000250+I_CCC, 0000251+I_NPN, 0000252+I_NPN, 0000253+I_NPN,
0000254+I_NPN, 0000255+I_NPN, 0000256+I_NPN, 0000257+I_CCC,
0000260+I_CCS, 0000261+I_CCS, 0000262+I_CCS, 0000263+I_NPN,
0000264+I_CCS, 0000265+I_NPN, 0000266+I_NPN, 0000267+I_NPN,
0000270+I_CCS, 0000271+I_NPN, 0000272+I_NPN, 0000273+I_NPN,
0000274+I_NPN, 0000275+I_NPN, 0000276+I_NPN, 0000277+I_CCS,
0000300+I_SOP, 0000400+I_BR, 0001000+I_BR, 0001400+I_BR,
0002000+I_BR, 0002400+I_BR, 0003000+I_BR, 0003400+I_BR,
0004000+I_RSOP,
0005000+I_SOP, 0005100+I_SOP, 0005200+I_SOP, 0005300+I_SOP,
0005400+I_SOP, 0005500+I_SOP, 0005600+I_SOP, 0005700+I_SOP,
0006000+I_SOP, 0006100+I_SOP, 0006200+I_SOP, 0006300+I_SOP,
0006400+I_6B, 0006500+I_SOP, 0006600+I_SOP, 0006700+I_SOP,
0007000+I_SOP, 0007200+I_SOP, 0007300+I_SOP,
0010000+I_DOP, 0020000+I_DOP, 0030000+I_DOP, 0040000+I_DOP,
0050000+I_DOP, 0060000+I_DOP,
0070000+I_RSOP, 0071000+I_RSOP, 0072000+I_RSOP, 0073000+I_RSOP,
0074000+I_RSOP,
0075000+I_REG, 0075010+I_REG, 0075020+I_REG, 0075030+I_REG,
0076020+I_REG,
0076030+I_NPN, 0076031+I_NPN, 0076032+I_NPN,
0076040+I_NPN, 0076041+I_NPN, 0076042+I_NPN, 0076043+I_NPN,
0076044+I_NPN, 0076045+I_NPN,
0076050+I_NPN, 0076051+I_NPN, 0076052+I_NPN, 0076053+I_NPN,
0076054+I_NPN, 0076055+I_NPN, 0076056+I_NPN, 0076057+I_NPN,
0076060+I_REG,
0076070+I_NPN, 0076071+I_NPN, 0076072+I_NPN, 0076073+I_NPN,
0076074+I_NPN, 0076075+I_NPN, 0076076+I_NPN, 0076077+I_NPN,
0076130+I_NPN, 0076131+I_NPN, 0076132+I_NPN,
0076140+I_NPN, 0076141+I_NPN, 0076142+I_NPN, 0076143+I_NPN,
0076144+I_NPN, 0076145+I_NPN,
0076150+I_NPN, 0076151+I_NPN, 0076152+I_NPN, 0076153+I_NPN,
0076154+I_NPN, 0076155+I_NPN, 0076156+I_NPN, 0076157+I_NPN,
0076170+I_NPN, 0076171+I_NPN, 0076172+I_NPN, 0076173+I_NPN,
0076174+I_NPN, 0076175+I_NPN, 0076176+I_NPN, 0076177+I_NPN,
0077000+I_SOB,
0100000+I_BR, 0100400+I_BR, 0101000+I_BR, 0101400+I_BR,
0102000+I_BR, 0102400+I_BR, 0103000+I_BR, 0103400+I_BR,
0103000+I_BR, 0103400+I_BR,
0104000+I_8B, 0104400+I_8B,
0105000+I_SOP, 0105100+I_SOP, 0105200+I_SOP, 0105300+I_SOP,
0105400+I_SOP, 0105500+I_SOP, 0105600+I_SOP, 0105700+I_SOP,
0106000+I_SOP, 0106100+I_SOP, 0106200+I_SOP, 0106300+I_SOP,
0106400+I_SOP, 0106500+I_SOP, 0106600+I_SOP, 0106700+I_SOP,
0110000+I_DOP, 0120000+I_DOP, 0130000+I_DOP, 0140000+I_DOP,
0150000+I_DOP, 0160000+I_DOP,
0170000+I_NPN, 0170001+I_NPN, 0170002+I_NPN, 0170011+I_NPN, 0170012+I_NPN,
0170100+I_SOP, 0170200+I_SOP, 0170300+I_SOP,
0170400+I_FOP, 0170400+I_FOP+I_D, 0170500+I_FOP, 0170500+I_FOP+I_D,
0170600+I_FOP, 0170600+I_FOP+I_D, 0170700+I_FOP, 0170700+I_FOP+I_D,
0171000+I_AFOP, 0171000+I_AFOP+I_D, 0171400+I_AFOP, 0171400+I_AFOP+I_D,
0172000+I_AFOP, 0172000+I_AFOP+I_D, 0172400+I_AFOP, 0172400+I_AFOP+I_D,
0173000+I_AFOP, 0173000+I_AFOP+I_D, 0173400+I_AFOP, 0173400+I_AFOP+I_D,
0174000+I_AFOP, 0174000+I_AFOP+I_D, 0174400+I_AFOP, 0174400+I_AFOP+I_D,
0175000+I_ASOP,
0175400+I_ASMD, 0175400+I_ASMD+I_D, 0175400+I_ASMD+I_L, 0175400+I_ASMD+I_D+I_L,
0176000+I_AFOP, 0176000+I_AFOP+I_D,
0176400+I_ASOP,
0177000+I_ASMD, 0177000+I_ASMD+I_D, 0177000+I_ASMD+I_L, 0177000+I_ASMD+I_D+I_L,
0177400+I_AFOP, 0177400+I_AFOP+I_D,
-1 };
static const char *rname [] =
{ "R0", "R1", "R2", "R3", "R4", "R5", "SP", "PC" };
static const char *fname [] =
{ "F0", "F1", "F2", "F3", "F4", "F5", "?6", "?7" };
static const char r50_to_asc[] = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$._0123456789";
/* Specifier decode
Inputs:
*of = output stream
addr = current PC
spec = specifier
nval = next word
flag = TRUE if decoding for CPU
iflag = TRUE if decoding integer instruction
Outputs:
count = -number of extra words retired
*/
int32 fprint_spec (FILE *of, t_addr addr, int32 spec, t_value nval,
int32 flag, int32 iflag)
{
int32 reg, mode;
static const int32 rgwd[8] = { 0, 0, 0, 0, 0, 0, -1, -1 };
static const int32 pcwd[8] = { 0, 0, -1, -1, 0, 0, -1, -1 };
reg = spec & 07;
mode = ((spec >> 3) & 07);
switch (mode) {
case 0:
if (iflag) fprintf (of, "%s", rname[reg]);
else fprintf (of, "%s", fname[reg]);
break;
case 1:
fprintf (of, "(%s)", rname[reg]);
break;
case 2:
if (reg != 7) fprintf (of, "(%s)+", rname[reg]);
else fprintf (of, "#%-o", nval);
break;
case 3:
if (reg != 7) fprintf (of, "@(%s)+", rname[reg]);
else fprintf (of, "@#%-o", nval);
break;
case 4:
fprintf (of, "-(%s)", rname[reg]);
break;
case 5:
fprintf (of, "@-(%s)", rname[reg]);
break;
case 6:
if ((reg != 7) || !flag) fprintf (of, "%-o(%s)", nval, rname[reg]);
else fprintf (of, "%-o", (nval + addr + 4) & 0177777);
break;
case 7:
if ((reg != 7) || !flag) fprintf (of, "@%-o(%s)", nval, rname[reg]);
else fprintf (of, "@%-o", (nval + addr + 4) & 0177777);
break; } /* end case */
return ((reg == 07)? pcwd[mode]: rgwd[mode]);
}
/* Symbolic decode
Inputs:
*of = output stream
addr = current PC
*val = values to decode
*uptr = pointer to unit
sw = switches
Outputs:
return = if >= 0, error code
if < 0, number of extra words retired
*/
t_stat fprint_sym (FILE *of, t_addr addr, t_value *val,
UNIT *uptr, int32 sw)
{
int32 cflag, i, j, c1, c2, c3, inst, fac, srcm, srcr, dstm, dstr;
int32 l8b, brdisp, wd1, wd2;
extern int32 FPS;
cflag = (uptr == NULL) || (uptr == &cpu_unit);
c1 = val[0] & 0177;
c2 = (val[0] >> 8) & 0177;
if (sw & SWMASK ('A')) { /* ASCII? */
fprintf (of, (c1 < 040)? "<%03o>": "%c", c1);
return SCPE_OK; }
if (sw & SWMASK ('C')) { /* character? */
fprintf (of, (c1 < 040)? "<%03o>": "%c", c1);
fprintf (of, (c2 < 040)? "<%03o>": "%c", c2);
return SCPE_OK; }
if (sw & SWMASK ('R')) { /* radix 50? */
if (val[0] > 0174777) return SCPE_ARG; /* max value */
c3 = val[0] % 050;
c2 = (val[0] / 050) % 050;
c1 = val[0] / (050 * 050);
fprintf (of, "%c%c%c", r50_to_asc[c1],
r50_to_asc[c2], r50_to_asc[c3]);
return SCPE_OK; }
if (!(sw & SWMASK ('M'))) return SCPE_ARG;
inst = val[0] | ((FPS << (I_V_L - FPS_V_L)) & I_L) |
((FPS << (I_V_D - FPS_V_D)) & I_D); /* inst + fp mode */
for (i = 0; opc_val[i] >= 0; i++) { /* loop thru ops */
j = (opc_val[i] >> I_V_CL) & I_M_CL; /* get class */
if ((opc_val[i] & 0777777) == (inst & masks[j])) { /* match? */
srcm = (inst >> 6) & 077; /* opr fields */
srcr = srcm & 07;
fac = srcm & 03;
dstm = inst & 077;
dstr = dstm & 07;
l8b = inst & 0377;
/* Instruction decode */
switch (j) { /* case on class */
case I_V_NPN: case I_V_CCC: case I_V_CCS: /* no operands */
fprintf (of, "%s", opcode[i]);
return SCPE_OK;
case I_V_REG: /* reg */
fprintf (of, "%s %-s", opcode[i], rname[dstr]);
return SCPE_OK;
case I_V_SOP: /* sop */
fprintf (of, "%s ", opcode[i]);
return fprint_spec (of, addr, dstm, val[1], cflag, TRUE);
case I_V_3B: /* 3b */
fprintf (of, "%s %-o", opcode[i], dstr);
return SCPE_OK;
case I_V_FOP: /* fop */
fprintf (of, "%s ", opcode[i]);
return fprint_spec (of, addr, dstm, val[1], cflag, FALSE);
case I_V_AFOP: /* afop */
fprintf (of, "%s %s,", opcode[i], fname[fac]);
return fprint_spec (of, addr, dstm, val[1], cflag, FALSE);
case I_V_6B: /* 6b */
fprintf (of, "%s %-o", opcode[i], dstm);
return SCPE_OK;
case I_V_BR: /* cond branch */
fprintf (of, "%s ", opcode[i]);
brdisp = (l8b + l8b + ((l8b & 0200)? 0177002: 2)) & 0177777;
if (cflag) fprintf (of, "%-o", (addr + brdisp) & 0177777);
else if (brdisp < 01000) fprintf (of, ".+%-o", brdisp);
else fprintf (of, ".-%-o", 0200000 - brdisp);
return SCPE_OK;
case I_V_8B: /* 8b */
fprintf (of, "%s %-o", opcode[i], l8b);
return SCPE_OK;
case I_V_SOB: /* sob */
fprintf (of, "%s %s,", opcode[i], rname[srcr]);
brdisp = (dstm * 2) - 2;
if (cflag) fprintf (of, "%-o", (addr - brdisp) & 0177777);
else if (brdisp <= 0) fprintf (of, ".+%-o", -brdisp);
else fprintf (of, ".-%-o", brdisp);
return SCPE_OK;
case I_V_RSOP: /* rsop */
fprintf (of, "%s %s,", opcode[i], rname[srcr]);
return fprint_spec (of, addr, dstm, val[1], cflag, TRUE);
case I_V_ASOP: case I_V_ASMD: /* asop, asmd */
fprintf (of, "%s %s,", opcode[i], fname[fac]);
return fprint_spec (of, addr, dstm, val[1], cflag, TRUE);
case I_V_DOP: /* dop */
fprintf (of, "%s ", opcode[i]);
wd1 = fprint_spec (of, addr, srcm, val[1], cflag, TRUE);
fprintf (of, ",");
wd2 = fprint_spec (of, addr - wd1 - wd1, dstm,
val[1 - wd1], cflag, TRUE);
return wd1 + wd2; } /* end case */
} /* end if */
} /* end for */
return SCPE_ARG; /* no match */
}
#define A_PND 100 /* # seen */
#define A_MIN 040 /* -( seen */
#define A_PAR 020 /* (Rn) seen */
#define A_REG 010 /* Rn seen */
#define A_PLS 004 /* + seen */
#define A_NUM 002 /* number seen */
#define A_REL 001 /* relative addr seen */
/* Register number
Inputs:
*cptr = pointer to input string
*strings = pointer to register names
mchar = character to match after register name
Outputs:
rnum = 0..7 if a legitimate register
< 0 if error
*/
int32 get_reg (char *cptr, const char *strings[], char mchar)
{
int32 i;
if (*(cptr + 2) != mchar) return -1;
for (i = 0; i < 8; i++) {
if (strncmp (cptr, strings[i], 2) == 0) return i; }
return -1;
}
/* Number or memory address
Inputs:
*cptr = pointer to input string
*dptr = pointer to output displacement
*pflag = pointer to accumulating flags
Outputs:
cptr = pointer to next character in input string
NULL if parsing error
Flags: 0 (no result), A_NUM (number), A_REL (relative)
*/
char *get_addr (char *cptr, int32 *dptr, int32 *pflag)
{
int32 val, minus;
char *tptr;
minus = 0;
if (*cptr == '.') { /* relative? */
*pflag = *pflag | A_REL;
cptr++; }
if (*cptr == '+') { /* +? */
*pflag = *pflag | A_NUM;
cptr++; }
if (*cptr == '-') { /* -? */
*pflag = *pflag | A_NUM;
minus = 1;
cptr++; }
errno = 0;
val = strtoul (cptr, &tptr, 8);
if (cptr == tptr) { /* no number? */
if (*pflag == (A_REL + A_NUM)) return NULL; /* .+, .-? */
*dptr = 0;
return cptr; }
if (errno || (*pflag == A_REL)) return NULL; /* .n? */
*dptr = (minus? -val: val) & 0177777;
*pflag = *pflag | A_NUM;
return tptr;
}
/* Specifier decode
Inputs:
*cptr = pointer to input string
addr = current PC
n1 = 0 if no extra word used
-1 if extra word used in prior decode
*sptr = pointer to output specifier
*dptr = pointer to output displacement
cflag = true if parsing for the CPU
iflag = true if integer specifier
Outputs:
status = = -1 extra word decoded
= 0 ok
= +1 error
*/
t_stat get_spec (char *cptr, t_addr addr, int32 n1, int32 *sptr, t_value *dptr,
int32 cflag, int32 iflag)
{
int32 reg, indir, pflag, disp;
indir = 0; /* no indirect */
pflag = 0;
if (*cptr == '@') { /* indirect? */
indir = 010;
cptr++; }
if (*cptr == '#') { /* literal? */
pflag = pflag | A_PND;
cptr++; }
if (strncmp (cptr, "-(", 2) == 0) { /* autodecrement? */
pflag = pflag | A_MIN;
cptr++; }
else if ((cptr = get_addr (cptr, &disp, &pflag)) == NULL) return 1;
if (*cptr == '(') { /* register index? */
pflag = pflag | A_PAR;
if ((reg = get_reg (cptr + 1, rname, ')')) < 0) return 1;
cptr = cptr + 4;
if (*cptr == '+') { /* autoincrement? */
pflag = pflag | A_PLS;
cptr++; } }
else if ((reg = get_reg (cptr, iflag? rname: fname, 0)) >= 0) {
pflag = pflag | A_REG;
cptr = cptr + 2; }
if (*cptr != 0) return 1; /* all done? */
/* Specifier decode, continued */
switch (pflag) { /* case on syntax */
case A_REG: /* Rn, @Rn */
*sptr = indir + reg;
return 0;
case A_PAR: /* (Rn), @(Rn) */
if (indir) { /* @(Rn) = @0(Rn) */
*sptr = 070 + reg;
*dptr = 0;
return -1; }
else *sptr = 010 + reg;
return 0;
case A_PAR+A_PLS: /* (Rn)+, @(Rn)+ */
*sptr = 020 + indir + reg;
return 0;
case A_MIN+A_PAR: /* -(Rn), @-(Rn) */
*sptr = 040 + indir + reg;
return 0;
case A_NUM+A_PAR: /* d(Rn), @d(Rn) */
*sptr = 060 + indir + reg;
*dptr = disp;
return -1;
case A_PND+A_REL: case A_PND+A_REL+A_NUM: /* #.+n, @#.+n */
if (!cflag) return 1;
disp = (disp + addr) & 0177777; /* fall through */
case A_PND+A_NUM: /* #n, @#n */
*sptr = 027 + indir;
*dptr = disp;
return -1;
case A_REL: case A_REL+A_NUM: /* .+n, @.+n */
*sptr = 067 + indir;
*dptr = (disp - 4 + (2 * n1)) & 0177777;
return -1;
case A_NUM: /* n, @n */
if (cflag) { /* CPU - use rel */
*sptr = 067 + indir;
*dptr = (disp - addr - 4 + (2 * n1)) & 0177777; }
else { if (indir) return 1; /* other - use abs */
*sptr = 037;
*dptr = disp; }
return -1;
default:
return 1; } /* end case */
}
/* Symbolic input
Inputs:
*cptr = pointer to input string
addr = current PC
*uptr = pointer to unit
*val = pointer to output values
sw = switches
Outputs:
status = > 0 error code
<= 0 -number of extra words
*/
t_stat parse_sym (char *cptr, t_addr addr, UNIT *uptr, t_value *val, int32 sw)
{
int32 cflag, d, i, j, reg, spec, n1, n2, disp, pflag;
t_stat r;
char *tptr, gbuf[CBUFSIZE];
cflag = (uptr == NULL) || (uptr == &cpu_unit);
while (isspace (*cptr)) cptr++; /* absorb spaces */
if ((sw & SWMASK ('A')) || ((*cptr == '\'') && cptr++)) { /* ASCII char? */
if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */
val[0] = (t_value) cptr[0];
return SCPE_OK; }
if ((sw & SWMASK ('C')) || ((*cptr == '"') && cptr++)) { /* ASCII string? */
if (cptr[0] == 0) return SCPE_ARG; /* must have 1 char */
val[0] = ((t_value) cptr[1] << 8) + (t_value) cptr[0];
return SCPE_OK; }
if (sw & SWMASK ('R')) return SCPE_ARG; /* radix 50 */
cptr = get_glyph (cptr, gbuf, 0); /* get opcode */
n1 = n2 = pflag = 0;
for (i = 0; (opcode[i] != NULL) && (strcmp (opcode[i], gbuf) != 0) ; i++) ;
if (opcode[i] == NULL) return SCPE_ARG;
val[0] = opc_val[i] & 0177777; /* get value */
j = (opc_val[i] >> I_V_CL) & I_M_CL; /* get class */
switch (j) { /* case on class */
case I_V_NPN: /* no operand */
break;
case I_V_REG: /* register */
cptr = get_glyph (cptr, gbuf, 0); /* get glyph */
if ((reg = get_reg (gbuf, rname, 0)) < 0) return SCPE_ARG;
val[0] = val[0] | reg;
break;
case I_V_3B: case I_V_6B: case I_V_8B: /* xb literal */
cptr = get_glyph (cptr, gbuf, 0); /* get literal */
d = get_uint (gbuf, 8, (1 << j) - 1, &r);
if (r != SCPE_OK) return SCPE_ARG;
val[0] = val[0] | d; /* put in place */
break;
case I_V_BR: /* cond br */
cptr = get_glyph (cptr, gbuf, 0); /* get address */
tptr = get_addr (gbuf, &disp, &pflag); /* parse */
if ((tptr == NULL) || (*tptr != 0)) return SCPE_ARG;
if ((pflag & A_REL) == 0) {
if (cflag) disp = (disp - addr) & 0177777;
else return SCPE_ARG; }
if ((disp & 1) || (disp > 0400) && (disp < 0177402)) return SCPE_ARG;
val[0] = val[0] | (((disp - 2) >> 1) & 0377);
break;
case I_V_SOB: /* sob */
cptr = get_glyph (cptr, gbuf, ','); /* get glyph */
if ((reg = get_reg (gbuf, rname, 0)) < 0) return SCPE_ARG;
val[0] = val[0] | (reg << 6);
cptr = get_glyph (cptr, gbuf, 0); /* get address */
tptr = get_addr (gbuf, &disp, &pflag); /* parse */
if ((tptr == NULL) || (*tptr != 0)) return SCPE_ARG;
if ((pflag & A_REL) == 0) {
if (cflag) disp = (disp - addr) & 0177777;
else return SCPE_ARG; }
if ((disp & 1) || ((disp > 2) && (disp < 0177604))) return SCPE_ARG;
val[0] = val[0] | (((2 - disp) >> 1) & 077);
break;
case I_V_RSOP: /* reg, sop */
cptr = get_glyph (cptr, gbuf, ','); /* get glyph */
if ((reg = get_reg (gbuf, rname, 0)) < 0) return SCPE_ARG;
val[0] = val[0] | (reg << 6); /* fall through */
case I_V_SOP: /* sop */
cptr = get_glyph (cptr, gbuf, 0); /* get glyph */
if ((n1 = get_spec (gbuf, addr, 0, &spec, &val[1], cflag, TRUE)) > 0)
return SCPE_ARG;
val[0] = val[0] | spec;
break;
case I_V_AFOP: case I_V_ASOP: case I_V_ASMD: /* fac, (s)fop */
cptr = get_glyph (cptr, gbuf, ','); /* get glyph */
if ((reg = get_reg (gbuf, fname, 0)) < 0) return SCPE_ARG;
if (reg > 3) return SCPE_ARG;
val[0] = val[0] | (reg << 6); /* fall through */
case I_V_FOP: /* fop */
cptr = get_glyph (cptr, gbuf, 0); /* get glyph */
if ((n1 = get_spec (gbuf, addr, 0, &spec, &val[1], cflag,
(j == I_V_ASOP) || (j == I_V_ASMD))) > 0) return SCPE_ARG;
val[0] = val[0] | spec;
break;
case I_V_DOP: /* double op */
cptr = get_glyph (cptr, gbuf, ','); /* get glyph */
if ((n1 = get_spec (gbuf, addr, 0, &spec, &val[1], cflag, TRUE)) > 0)
return SCPE_ARG;
val[0] = val[0] | (spec << 6);
cptr = get_glyph (cptr, gbuf, 0); /* get glyph */
if ((n2 = get_spec (gbuf, addr, n1, &spec, &val[1 - n1],
cflag, TRUE)) > 0) return SCPE_ARG;
val[0] = val[0] | spec;
break;
case I_V_CCC: case I_V_CCS: /* cond code oper */
for (cptr = get_glyph (cptr, gbuf, 0); gbuf[0] != 0;
cptr = get_glyph (cptr, gbuf, 0)) {
for (i = 0; (opcode[i] != NULL) &&
(strcmp (opcode[i], gbuf) != 0) ; i++) ;
if ((((opc_val[i] >> I_V_CL) & I_M_CL) != j) ||
(opcode[i] == NULL)) return SCPE_ARG;
val[0] = val[0] | (opc_val[i] & 0177777); }
break;
default:
return SCPE_ARG; }
if (*cptr != 0) return SCPE_ARG; /* junk at end? */
return n1 + n2;
}
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