Mercurial > repos > blastem
view z80inst.h @ 478:2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 17 Sep 2013 00:11:45 -0700 |
parents | 140af5509ce7 |
children | 1625555e346e |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #ifndef Z80INST_H_ #define Z80INST_H_ #include <stdint.h> enum { Z80_LD, Z80_PUSH, Z80_POP, Z80_EX, Z80_EXX, Z80_LDI, Z80_LDIR, Z80_LDD, Z80_LDDR, Z80_CPI, Z80_CPIR, Z80_CPD, Z80_CPDR, Z80_ADD, Z80_ADC, Z80_SUB, Z80_SBC, Z80_AND, Z80_OR, Z80_XOR, Z80_CP, Z80_INC, Z80_DEC, Z80_DAA, Z80_CPL, Z80_NEG, Z80_CCF, Z80_SCF, Z80_NOP, Z80_HALT, Z80_DI, Z80_EI, Z80_IM, Z80_RLC, Z80_RL, Z80_RRC, Z80_RR, Z80_SLA, Z80_SRA, Z80_SLL, Z80_SRL, Z80_RLD, Z80_RRD, Z80_BIT, Z80_SET, Z80_RES, Z80_JP, Z80_JPCC, Z80_JR, Z80_JRCC, Z80_DJNZ, Z80_CALL, Z80_CALLCC, Z80_RET, Z80_RETCC, Z80_RETI, Z80_RETN, Z80_RST, Z80_IN, Z80_INI, Z80_INIR, Z80_IND, Z80_INDR, Z80_OUT, Z80_OUTI, Z80_OTIR, Z80_OUTD, Z80_OTDR }; enum { Z80_C=0, Z80_B, Z80_E, Z80_D, Z80_L, Z80_H, Z80_IXL, Z80_IXH, Z80_IYL, Z80_IYH, Z80_I, Z80_R, Z80_A, Z80_BC, Z80_DE, Z80_HL, Z80_SP, Z80_AF, Z80_IX, Z80_IY, Z80_UNUSED }; #define Z80_IMMED_FLAG 0x80 #define Z80_USE_IMMED (Z80_IMMED_FLAG|Z80_UNUSED) enum { Z80_CC_NZ, Z80_CC_Z, Z80_CC_NC, Z80_CC_C, Z80_CC_PO, Z80_CC_PE, Z80_CC_P, Z80_CC_M }; enum { Z80_REG, Z80_REG_INDIRECT, Z80_IMMED, Z80_IMMED_INDIRECT, Z80_IX_DISPLACE, Z80_IY_DISPLACE }; #define Z80_DIR 0x80 typedef struct { uint8_t op; uint8_t reg; uint8_t addr_mode; uint8_t ea_reg; uint16_t immed; } z80inst; uint8_t * z80_decode(uint8_t * istream, z80inst * decoded); int z80_disasm(z80inst * decoded, char * dst, uint16_t address); uint8_t z80_high_reg(uint8_t reg); uint8_t z80_low_reg(uint8_t reg); uint8_t z80_word_reg(uint8_t reg); uint8_t z80_is_terminal(z80inst * inst); #endif //Z80INST_H_