6502 emulator for Commodore 64 ROMs, serial terminal edition for MBED. Recommend terminal echo on, line edit on, caps lock, 115200bps, implicit carriage return on newline, currently non-buffered so don't paste lots of stuff
More details at:
[https://github.com/davervw] [https://techwithdave.davevw.com/2020/03/simple-emu-c64.html]
emu6502.h@8:519febdce8db, 2020-04-15 (annotated)
- Committer:
- davervw
- Date:
- Wed Apr 15 05:15:07 2020 +0000
- Revision:
- 8:519febdce8db
- Parent:
- 7:f49fa56672d8
Implemented RAM/ROM/IO/CHARSET banking, if you've got 64K available RAM allocated (see ram array in emuc64.cpp)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
davervw | 0:90de1cbc8a5f | 1 | // emu6502.h - Emu6502 - MOS6502 Emulator |
davervw | 0:90de1cbc8a5f | 2 | // |
davervw | 0:90de1cbc8a5f | 3 | //////////////////////////////////////////////////////////////////////////////// |
davervw | 0:90de1cbc8a5f | 4 | // |
davervw | 0:90de1cbc8a5f | 5 | // c-simple-emu-cbm (C Portable Version) |
davervw | 7:f49fa56672d8 | 6 | // C64/6502 Emulator for Terminal Console |
davervw | 0:90de1cbc8a5f | 7 | // |
davervw | 0:90de1cbc8a5f | 8 | // MIT License |
davervw | 0:90de1cbc8a5f | 9 | // |
davervw | 7:f49fa56672d8 | 10 | // Copyright(c) 2020 by David R. Van Wagner |
davervw | 0:90de1cbc8a5f | 11 | // davevw.com |
davervw | 0:90de1cbc8a5f | 12 | // |
davervw | 0:90de1cbc8a5f | 13 | // Permission is hereby granted, free of charge, to any person obtaining a copy |
davervw | 0:90de1cbc8a5f | 14 | // of this software and associated documentation files (the "Software"), to deal |
davervw | 0:90de1cbc8a5f | 15 | // in the Software without restriction, including without limitation the rights |
davervw | 0:90de1cbc8a5f | 16 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
davervw | 0:90de1cbc8a5f | 17 | // copies of the Software, and to permit persons to whom the Software is |
davervw | 0:90de1cbc8a5f | 18 | // furnished to do so, subject to the following conditions: |
davervw | 0:90de1cbc8a5f | 19 | // |
davervw | 0:90de1cbc8a5f | 20 | // The above copyright notice and this permission notice shall be included in all |
davervw | 0:90de1cbc8a5f | 21 | // copies or substantial portions of the Software. |
davervw | 0:90de1cbc8a5f | 22 | // |
davervw | 0:90de1cbc8a5f | 23 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
davervw | 0:90de1cbc8a5f | 24 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
davervw | 0:90de1cbc8a5f | 25 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE |
davervw | 0:90de1cbc8a5f | 26 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
davervw | 0:90de1cbc8a5f | 27 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
davervw | 0:90de1cbc8a5f | 28 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
davervw | 0:90de1cbc8a5f | 29 | // SOFTWARE. |
davervw | 0:90de1cbc8a5f | 30 | // |
davervw | 0:90de1cbc8a5f | 31 | //////////////////////////////////////////////////////////////////////////////// |
davervw | 0:90de1cbc8a5f | 32 | |
davervw | 0:90de1cbc8a5f | 33 | #pragma once |
davervw | 0:90de1cbc8a5f | 34 | |
davervw | 0:90de1cbc8a5f | 35 | typedef signed char sbyte; |
davervw | 0:90de1cbc8a5f | 36 | typedef unsigned char byte; |
davervw | 0:90de1cbc8a5f | 37 | //typedef unsigned char bool; |
davervw | 0:90de1cbc8a5f | 38 | typedef unsigned short ushort; |
davervw | 0:90de1cbc8a5f | 39 | #define false 0 |
davervw | 0:90de1cbc8a5f | 40 | #define true 1 |
davervw | 0:90de1cbc8a5f | 41 | |
davervw | 0:90de1cbc8a5f | 42 | extern byte A; |
davervw | 0:90de1cbc8a5f | 43 | extern byte X; |
davervw | 0:90de1cbc8a5f | 44 | extern byte Y; |
davervw | 0:90de1cbc8a5f | 45 | extern byte S; |
davervw | 0:90de1cbc8a5f | 46 | extern bool N; |
davervw | 0:90de1cbc8a5f | 47 | extern bool V; |
davervw | 0:90de1cbc8a5f | 48 | extern bool B; |
davervw | 0:90de1cbc8a5f | 49 | extern bool D; |
davervw | 0:90de1cbc8a5f | 50 | extern bool I; |
davervw | 0:90de1cbc8a5f | 51 | extern bool Z; |
davervw | 0:90de1cbc8a5f | 52 | extern bool C; |
davervw | 0:90de1cbc8a5f | 53 | extern ushort PC; |
davervw | 0:90de1cbc8a5f | 54 | |
davervw | 0:90de1cbc8a5f | 55 | extern bool trace; |
davervw | 0:90de1cbc8a5f | 56 | extern bool step; |
davervw | 0:90de1cbc8a5f | 57 | |
davervw | 0:90de1cbc8a5f | 58 | extern void ResetRun(bool (*ExecutePatch)(void)); |
davervw | 0:90de1cbc8a5f | 59 | extern void Execute(ushort addr, bool (*ExecutePatch)(void)); |
davervw | 0:90de1cbc8a5f | 60 | extern void Push(int value); |
davervw | 0:90de1cbc8a5f | 61 | extern byte Pop(void); |
davervw | 0:90de1cbc8a5f | 62 | extern void DisassembleLong(ushort addr, bool *p_conditional, byte *p_bytes, ushort *p_addr2, char *dis, int dis_size, char *line, int line_size); |
davervw | 0:90de1cbc8a5f | 63 | extern void DisassembleShort(ushort addr, bool *p_conditional, byte *p_bytes, ushort *p_addr2, char *dis, int dis_size); |
davervw | 0:90de1cbc8a5f | 64 | extern byte LO(ushort value); |
davervw | 0:90de1cbc8a5f | 65 | extern byte HI(ushort value); |
davervw | 0:90de1cbc8a5f | 66 | |
davervw | 0:90de1cbc8a5f | 67 | extern void SetMemory(ushort addr, byte value); |
davervw | 0:90de1cbc8a5f | 68 | extern byte GetMemory(ushort addr); |
davervw | 0:90de1cbc8a5f | 69 | extern bool ExecutePatch(void); |