mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 18:25:35 -04:00
Matthew Stanley
ec4306fbb3
Framework work on codex/mmx6-support that makes Tomba build and play (title screen, 0 dispatch misses) and MMX6 boot through BIOS to its intro. Touches recompiler codegen (code_generator, function_analysis) and runtime CD-ROM/DMA/MDEC/GPU/SIO timing (cdrom, dma, mdec, gpu, psx_cycles, traps, fntrace, debug_server) + headers + runtime.cmake. Milestone snapshot for collapsing onto master. Build dir excluded. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/* dma.h — PS1 DMA controller simulation (Phase 3).
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*
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* 7 DMA channels:
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* Ch0: MDEC in 0x1F801080
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* Ch1: MDEC out 0x1F801090
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* Ch2: GPU 0x1F8010A0
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* Ch3: CDROM 0x1F8010B0
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* Ch4: SPU 0x1F8010C0
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* Ch5: PIO 0x1F8010D0
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* Ch6: OTC 0x1F8010E0
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*
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* Global:
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* DPCR: 0x1F8010F0 (DMA control — enable bits per channel)
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* DICR: 0x1F8010F4 (DMA interrupt control)
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*/
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#ifndef PSXRECOMP_DMA_H
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#define PSXRECOMP_DMA_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void dma_init(void);
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uint32_t dma_read(uint32_t addr);
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void dma_write(uint32_t addr, uint32_t val);
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void dma_write_masked(uint32_t addr, uint32_t val, uint32_t mask);
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void dma_advance(uint32_t cycles);
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uint32_t dma_get_dicr(void);
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uint32_t dma_get_dpcr(void);
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typedef struct DMAChannelDebugState {
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uint32_t madr;
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uint32_t bcr;
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uint32_t chcr;
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uint32_t active;
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uint32_t remaining_words;
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uint32_t cycles_accum;
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} DMAChannelDebugState;
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typedef struct DMADebugState {
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uint32_t dpcr;
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uint32_t dicr;
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DMAChannelDebugState channels[7];
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} DMADebugState;
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typedef struct DMATraceEntry {
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uint64_t seq;
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uint32_t frame;
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uint32_t kind;
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uint32_t channel;
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uint32_t total_words;
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uint32_t madr;
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uint32_t bcr;
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uint32_t chcr;
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uint32_t dpcr;
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uint32_t dicr_before;
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uint32_t dicr_after;
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uint32_t i_stat_before;
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uint32_t i_stat_after;
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uint32_t func;
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uint32_t pc;
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} DMATraceEntry;
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#define DMA_TRACE_CAP (1 << 14)
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uint64_t dma_debug_get_trace(const DMATraceEntry** out_entries);
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void dma_debug_clear_trace(void);
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void dma_debug_get_state(DMADebugState* out);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PSXRECOMP_DMA_H */
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