111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/* system_defs.h: IBM PC simulator definitions
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Copyright (c) 2010, William A. Beech
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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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William A. Beech 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 William A. Beech 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 William A. Beech.
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11 Jul 16 - Original file.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "sim_defs.h" /* simulator defns */
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/* set the base I/O address and device count for the 8237 */
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#define I8237_BASE_0 0x000
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#define I8237_NUM 1
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/* set the base I/O address and device count for the 8253 */
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#define I8253_BASE_0 0x040
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#define I8253_BASE_1 0x100
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#define I8253_NUM 2
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/* set the base I/O address and device count for the 8255 */
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#define I8255_BASE_0 0x060
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#define I8255_NUM 1
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/* set the base I/O address and device count for the 8259 */
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#define I8259_BASE_0 0x020
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#define I8259_NUM 1
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/* set the base I/O address for the NMI mask */
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#define NMI_BASE 0x0A0
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/* set the base I/O address and device count for the DMA page registers */
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#define DMAPAG_BASE_0 0x080
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#define DMAPAG_BASE_1 0x081
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#define DMAPAG_BASE_2 0x082
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#define DMAPAG_BASE_3 0x083
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#define DMAPAG_NUM 4
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/* set the base and size for the EPROM on the IBM PC */
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#define ROM_BASE 0xFE000
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#define ROM_SIZE 0x02000
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/* set the base and size for the RAM on the IBM PC */
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#define RAM_BASE 0x00000
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#define RAM_SIZE 0x40000
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/* set INTR for CPU on the 8088 */
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#define INT_R INT_1
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/* xtbus interrupt definitions */
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#define INT_0 0x01
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#define INT_1 0x02
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#define INT_2 0x04
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#define INT_3 0x08
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#define INT_4 0x10
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#define INT_5 0x20
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#define INT_6 0x40
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#define INT_7 0x80
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/* Memory */
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#define ADDRMASK16 0xFFFF
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#define ADDRMASK20 0xFFFFF
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#define MAXMEMSIZE20 0xFFFFF /* 8080 max memory size */
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#define MEMSIZE (i8088_unit.capac) /* 8088 actual memory size */
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#define ADDRMASK (MAXMEMSIZE - 1) /* 8088 address mask */
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#define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE)
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/* debug definitions */
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#define DEBUG_flow 0x0001
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#define DEBUG_read 0x0002
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#define DEBUG_write 0x0004
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#define DEBUG_level1 0x0008
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#define DEBUG_level2 0x0010
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#define DEBUG_reg 0x0020
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#define DEBUG_asm 0x0040
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#define DEBUG_all 0xFFFF
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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_OPCODE 4 /* Invalid Opcode */
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#define STOP_IO 5 /* I/O error */
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#define STOP_MEM 6 /* Memory error */
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