1 /* altairz80_defs.h: MITS Altair simulator definitions 2 3 Copyright (c) 2002-2011, Peter Schorn 4 5 Permission is hereby granted, free of charge, to any person obtaining a 6 copy of this software and associated documentation files (the "Software"), 7 to deal in the Software without restriction, including without limitation 8 the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 and/or sell copies of the Software, and to permit persons to whom the 10 Software is furnished to do so, subject to the following conditions: 11 12 The above copyright notice and this permission notice shall be included in 13 all copies or substantial portions of the Software. 14 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 PETER SCHORN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 19 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 20 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22 Except as contained in this notice, the name of Peter Schorn shall not 23 be used in advertising or otherwise to promote the sale, use or other dealings 24 in this Software without prior written authorization from Peter Schorn. 25 26 Based on work by Charles E Owen (c) 1997 27 */ 28 29 #include "sim_defs.h" /* simulator definitions */ 30 31 #define MAXBANKSIZE 65536 /* maximum memory size, a power of 2 */ 32 #define MAXBANKSIZELOG2 16 /* log2 of MAXBANKSIZE */ 33 #define MAXBANKS 16 /* max number of memory banks, a power of 2 */ 34 #define MAXBANKSLOG2 4 /* log2 of MAXBANKS */ 35 #define MAXMEMORY (MAXBANKS * MAXBANKSIZE) /* maximum, total memory size */ 36 #define ADDRMASK (MAXBANKSIZE - 1) /* address mask */ 37 #define ADDRMASKEXTENDED (MAXMEMORY - 1) /* extended address mask */ 38 #define BANKMASK (MAXBANKS - 1) /* bank mask */ 39 #define MEMORYSIZE (cpu_unit.capac) /* actual memory size */ 40 #define KB 1024 /* kilo byte */ 41 #define KBLOG2 10 /* log2 of KB */ 42 #define ALTAIR_ROM_LOW 0xff00 /* start address of regular Altair ROM */ 43 #define RESOURCE_TYPE_MEMORY 1 44 #define RESOURCE_TYPE_IO 2 45 46 #define NUM_OF_DSK 16 /* NUM_OF_DSK must be power of two */ 47 #define LDA_INSTRUCTION 0x3e /* op-code for LD A,<8-bit value> instruction */ 48 #define UNIT_NO_OFFSET_1 0x37 /* LD A,<unitno> */ 49 #define UNIT_NO_OFFSET_2 0xb4 /* LD a,80h | <unitno> */ 50 51 #define CHIP_TYPE_8080 0 52 #define CHIP_TYPE_Z80 1 53 #define CHIP_TYPE_8086 2 54 #define MAX_CHIP_TYPE CHIP_TYPE_8086 55 56 /* simulator stop codes */ 57 #define STOP_HALT 0 /* HALT */ 58 #define STOP_IBKPT 1 /* breakpoint (program counter) */ 59 #define STOP_MEM 2 /* breakpoint (memory access) */ 60 #define STOP_INSTR 3 /* breakpoint (instruction access) */ 61 #define STOP_OPCODE 4 /* invalid operation encountered (8080, Z80, 8086) */ 62 63 #define UNIT_CPU_V_OPSTOP (UNIT_V_UF+0) /* stop on invalid operation */ 64 #define UNIT_CPU_OPSTOP (1 << UNIT_CPU_V_OPSTOP) 65 #define UNIT_CPU_V_BANKED (UNIT_V_UF+1) /* banked memory is used */ 66 #define UNIT_CPU_BANKED (1 << UNIT_CPU_V_BANKED) 67 #define UNIT_CPU_V_ALTAIRROM (UNIT_V_UF+2) /* ALTAIR ROM exists */ 68 #define UNIT_CPU_ALTAIRROM (1 << UNIT_CPU_V_ALTAIRROM) 69 #define UNIT_CPU_V_VERBOSE (UNIT_V_UF+3) /* warn if ROM is written to */ 70 #define UNIT_CPU_VERBOSE (1 << UNIT_CPU_V_VERBOSE) 71 #define UNIT_CPU_V_MMU (UNIT_V_UF+4) /* use MMU and slower CPU */ 72 #define UNIT_CPU_MMU (1 << UNIT_CPU_V_MMU) 73 #define UNIT_CPU_V_STOPONHALT (UNIT_V_UF+5) /* stop simulation on HALT */ 74 #define UNIT_CPU_STOPONHALT (1 << UNIT_CPU_V_STOPONHALT) 75 #define UNIT_CPU_V_SWITCHER (UNIT_V_UF+6) /* switcher 8086 <--> 8080/Z80 enabled */ 76 #define UNIT_CPU_SWITCHER (1 << UNIT_CPU_V_SWITCHER) 77 78 #if defined (__linux) || defined(__NetBSD__) || defined (__OpenBSD__) || defined (__FreeBSD__) || defined (__APPLE__) 79 #define UNIX_PLATFORM 1 80 #else 81 #define UNIX_PLATFORM 0 82 #endif 83 84 #define ADDRESS_FORMAT "[0x%05x]" 85 86 /* use NLP for new line printing while the simulation is running */ 87 #if UNIX_PLATFORM 88 #define NLP "\r\n" 89 #else 90 #define NLP "\n" 91 #endif 92 93 #if (defined (__MWERKS__) && defined (macintosh)) || defined(__DECC) 94 #define __FUNCTION__ __FILE__ 95 #endif 96 97 typedef struct { 98 uint32 mem_base; /* Memory Base Address */ 99 uint32 mem_size; /* Memory Address space requirement */ 100 uint32 io_base; /* I/O Base Address */ 101 uint32 io_size; /* I/O Address Space requirement */ 102 } PNP_INFO; 103