Mercurial > repos > blastem
view jagcpu.h @ 1374:8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 23 May 2017 23:47:40 -0700 |
parents | c48d5191ddc9 |
children | 10c7f1e44c47 |
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#ifndef JAGCPU_H_ #define JAGCPU_H_ enum { JAG_ADD, JAG_ADDC, JAG_ADDQ, JAG_ADDQT, JAG_SUB, JAG_SUBC, JAG_SUBQ, JAG_SUBQT, JAG_NEG, JAG_AND, JAG_OR, JAG_XOR, JAG_NOT, JAG_BTST, JAG_BSET, JAG_BCLR, JAG_MULT, JAG_IMULT, JAG_IMULTN, JAG_RESMAC, JAG_IMACN, JAG_DIV, JAG_ABS, JAG_SH, JAG_SHLQ, JAG_SHRQ, JAG_SHA, JAG_SHARQ, JAG_ROR, JAG_RORQ, JAG_CMP, JAG_CMPQ, GPU_SAT8, DSP_SUBQMOD = GPU_SAT8, GPU_SAT16, DSP_SAT16S = GPU_SAT16, JAG_MOVE, JAG_MOVEQ, JAG_MOVETA, JAG_MOVEFA, JAG_MOVEI, JAG_LOADB, JAG_LOADW, JAG_LOAD, GPU_LOADP, DSP_SAT32S = GPU_LOADP, JAG_LOAD_R14_REL, JAG_LOAD_R15_REL, JAG_STOREB, JAG_STOREW, JAG_STORE, GPU_STOREP, DSP_MIRROR = GPU_STOREP, JAG_STORE_R14_REL, JAG_STORE_R15_REL, JAG_MOVE_PC, JAG_JUMP, JAG_JR, JAG_MMULT, JAG_MTOI, JAG_NORMI, JAG_NOP, JAG_LOAD_R14_INDEXED, JAG_LOAD_R15_INDEXED, JAG_STORE_R14_INDEXED, JAG_STORE_R15_INDEXED, GPU_SAT24, GPU_PACK, DSP_ADDQMOD = GPU_PACK, GPU_UNPACK //virtual opcode, UNPACK is PACK with a reg1 field set to 1 }; #define JAGCPU_NOREG -1 typedef struct { cpu_options gen; int8_t regs[32]; int8_t result; int8_t resultreg; int8_t bankptr; uint8_t is_gpu; } jag_cpu_options; typedef struct { uint32_t read_high; } jag_gpu; typedef struct { uint8_t mac_high; uint8_t modulo; } jag_dsp; typedef struct { uint32_t cycles; uint32_t regs[64]; uint32_t *main; uint32_t *alt; uint32_t pc; uint32_t result; uint32_t flags; uint32_t flags_pending; uint32_t remainder; union { jag_gpu gpu; jag_dsp dsp; }; int8_t writeback; int8_t resultreg; uint8_t is_gpu; } jag_cpu; uint16_t jag_opcode(uint16_t inst, uint8_t is_gpu); char * jag_cc(uint16_t inst); uint16_t jag_reg2(uint16_t inst); uint32_t jag_jr_dest(uint16_t inst, uint32_t address); int jag_cpu_disasm(uint16_t **stream, uint32_t address, char *dst, uint8_t is_gpu, uint8_t labels); #endif