94 lines
5.1 KiB
C
94 lines
5.1 KiB
C
/* s3_defs.h: IBM System/3 simulator definitions
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Copyright (c) 2001-2005, Charles E. Owen
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Charles E. Owen shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Charles E. Owen.
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*/
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#include "sim_defs.h" /* simulator defns */
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/* Simulator stop codes */
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#define STOP_RSRV 1 /* must be 1 */
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#define STOP_HALT 2 /* HALT */
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#define STOP_IBKPT 3 /* breakpoint */
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#define STOP_INVOP 4 /* program check - invalid op */
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#define STOP_INVQ 5 /* Prog check - invalid Q */
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#define STOP_INVADDR 6 /* Prog check - invalid addr */
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#define STOP_INVDEV 7 /* Prog check - invalid dev cmd */
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#define STOP_NOCD 8 /* ATTN card reader */
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#define RESET_INTERRUPT 77 /* special return from SIO */
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/* Memory */
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#define MAXMEMSIZE 65536 /* max memory size */
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#define AMASK (MAXMEMSIZE - 1) /* logical addr mask */
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#define PAMASK (MAXMEMSIZE - 1) /* physical addr mask */
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#define MEMSIZE (cpu_unit.capac) /* actual memory size */
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#define MAX_DECIMAL_DIGITS 31 /* max size of a decimal number */
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#define CDR_WIDTH 80 /* Max card size */
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#define CDP_WIDTH 80 /* Punch width */
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#define LPT_WIDTH 132
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#define CCT_LNT 132
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#define DSK_SECTSIZE 256 /* Sector length */
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#define DSK_CYLSIZE 256*48 /* Cylinder length */
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/* I/O structure
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The I/O structure is tied together by dev_table, indexed by
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the device number. Each entry in dev_table consists of
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level Interrupt level for device (0-7)
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priority Priority for device (1-8)
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routine IOT action routine
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*/
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struct ndev {
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int32 level; /* interrupt level */
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int32 pri; /* Device priority */
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int32 (*routine)(int32, int32, int32, int32); /* dispatch routine */
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};
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/* Structure to define operation codes */
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struct opdef {
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const char op[6]; /* Mnemonic for op */
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int32 opmask; /* Bits set on in opcode */
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int32 q; /* Qbyte */
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int32 form; /* Forms are:
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0 - 1-byte hex operand
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1 - 1-byte register addr, A-Addr
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2 - A-addr,B-addr,Qbyte
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3 - A-addr,Qbyte
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4 - da,m,n
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5 - da,m,n,cc
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6 - da,m,n,A-addr
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7 - 1-address implict Q
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8 - 2-address implict Q */
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int32 group; /* Group Code:
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0 - Command Format (0xFx)
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1 - 1-address A (0x<C,D,E>x)
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2 - 2-address (0x<0,1,2,4,5,6,8,9,A>x)
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3 - 1-address B (0x<3,7,B>x) */
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};
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