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I1401, I1620: Define max memory address values

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This commit is contained in:
Bob Supnik
2022-05-16 07:51:22 -07:00
committed by Mark Pizzolato
parent 80ed10e9a2
commit 980c21e50f
4 changed files with 17 additions and 11 deletions
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9
I1401/i1401_cpu.c
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@@ -1,6 +1,6 @@
/* i1401_cpu.c: IBM 1401 CPU simulator
Copyright (c) 1993-2017, Robert M. Supnik
Copyright (c) 1993-2021, 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"),
@@ -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.
08-Jun-21 RMS Added max value to address registers
13-Mar-17 RMS Fixed MTF length checking (COVERITY)
30-Jan-15 RMS Fixed treatment of overflow (Ken Shirriff)
08-Oct-12 RMS Clear storage and branch preserves B register (Van Snyder)
@@ -249,9 +250,9 @@ UNIT cpu_unit = {
};
REG cpu_reg[] = {
{ DRDATA (IS, saved_IS, 14), PV_LEFT },
{ DRDATA (AS, AS, 14), PV_LEFT },
{ DRDATA (BS, BS, 14), PV_LEFT },
{ DRDATA (IS, saved_IS, 14), PV_LEFT, MAXADDR },
{ DRDATA (AS, AS, 14), PV_LEFT, MAXADDR },
{ DRDATA (BS, BS, 14), PV_LEFT, MAXADDR },
{ FLDATA (ASERR, as_err, 0) },
{ FLDATA (BSERR, bs_err, 0) },
{ ORDATA (D, D, 7) },

4
I1401/i1401_defs.h
View File

@@ -1,6 +1,6 @@
/* i1401_defs.h: IBM 1401 simulator definitions
Copyright (c) 1993-2010, Robert M. Supnik
Copyright (c) 1993-2021, 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"),
@@ -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.
08-Jun-21 RMS Added max memory address
06-JUl-10 RMS Added overlap indicator definitions
22-May-10 RMS Added check for 64b definitions
11-Jul-08 RMS Added IO mode flag for boot (from Bob Abeles)
@@ -81,6 +82,7 @@
/* Memory and devices */
#define MAXMEMSIZE 16000 /* max memory */
#define MAXADDR (MAXMEMSIZE - 1) /* max memory address */
#define MEMSIZE (cpu_unit.capac) /* current memory */
#define CDR_BUF 1 /* card rdr buffer */
#define CDR_WIDTH 80 /* card rdr width */