| /* system_defs.h: IBM PC simulator definitions | |
| Copyright (c) 2010, William A. Beech | |
| 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 | |
| William A. Beech 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 William A. Beech shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from William A. Beech. | |
| 11 Jul 16 - Original file. | |
| */ | |
| #include <stdio.h> | |
| #include <ctype.h> | |
| #include "sim_defs.h" /* simulator defns */ | |
| /* set the base I/O address and device count for the 8237 */ | |
| #define I8237_BASE_0 0x000 | |
| #define I8237_NUM 1 | |
| /* set the base I/O address and device count for the 8253 */ | |
| #define I8253_BASE_0 0x040 | |
| #define I8253_BASE_1 0x100 | |
| #define I8253_NUM 2 | |
| /* set the base I/O address and device count for the 8255 */ | |
| #define I8255_BASE_0 0x060 | |
| #define I8255_NUM 1 | |
| /* set the base I/O address and device count for the 8259 */ | |
| #define I8259_BASE_0 0x020 | |
| #define I8259_NUM 1 | |
| /* set the base I/O address for the NMI mask */ | |
| #define NMI_BASE 0x0A0 | |
| /* set the base I/O address and device count for the DMA page registers */ | |
| #define DMAPAG_BASE_0 0x080 | |
| #define DMAPAG_BASE_1 0x081 | |
| #define DMAPAG_BASE_2 0x082 | |
| #define DMAPAG_BASE_3 0x083 | |
| #define DMAPAG_NUM 4 | |
| /* set the base and size for the EPROM on the IBM PC */ | |
| #define ROM_BASE 0xFE000 | |
| #define ROM_SIZE 0x02000 | |
| /* set the base and size for the RAM on the IBM PC */ | |
| #define RAM_BASE 0x00000 | |
| #define RAM_SIZE 0x40000 | |
| /* set INTR for CPU on the 8088 */ | |
| #define INT_R INT_1 | |
| /* xtbus interrupt definitions */ | |
| #define INT_0 0x01 | |
| #define INT_1 0x02 | |
| #define INT_2 0x04 | |
| #define INT_3 0x08 | |
| #define INT_4 0x10 | |
| #define INT_5 0x20 | |
| #define INT_6 0x40 | |
| #define INT_7 0x80 | |
| /* Memory */ | |
| #define ADDRMASK16 0xFFFF | |
| #define ADDRMASK20 0xFFFFF | |
| #define MAXMEMSIZE20 0xFFFFF /* 8080 max memory size */ | |
| #define MEMSIZE (i8088_unit.capac) /* 8088 actual memory size */ | |
| #define ADDRMASK (MAXMEMSIZE - 1) /* 8088 address mask */ | |
| #define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE) | |
| /* debug definitions */ | |
| #define DEBUG_flow 0x0001 | |
| #define DEBUG_read 0x0002 | |
| #define DEBUG_write 0x0004 | |
| #define DEBUG_level1 0x0008 | |
| #define DEBUG_level2 0x0010 | |
| #define DEBUG_reg 0x0020 | |
| #define DEBUG_asm 0x0040 | |
| #define DEBUG_all 0xFFFF | |
| /* Simulator stop codes */ | |
| #define STOP_RSRV 1 /* must be 1 */ | |
| #define STOP_HALT 2 /* HALT */ | |
| #define STOP_IBKPT 3 /* breakpoint */ | |
| #define STOP_OPCODE 4 /* Invalid Opcode */ | |
| #define STOP_IO 5 /* I/O error */ | |
| #define STOP_MEM 6 /* Memory error */ | |