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view segacd.h @ 2054:8ee7ecbf3f21 segacd
Implement enough of Sega CD gate array and Sub CPU to pass Sik's Mode 1 test ROM
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 18 Jan 2022 00:03:50 -0800 |
parents | a763523dadf4 |
children | 70260f6051dd |
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#ifndef SEGACD_H_ #define SEGACD_H_ #include <stdint.h> #include "genesis.h" typedef struct { m68k_context *m68k; system_media *media; genesis_context *genesis; uint16_t gate_array[0x100]; uint16_t *rom; //unaltered ROM, needed for mirrored locations uint16_t *rom_mut; //ROM with low 16-bit of HINT vector modified by register write uint16_t *prog_ram; uint16_t *word_ram; uint8_t *pcm_ram; uint8_t *bram; uint32_t stopwatch_cycle; uint32_t int2_cycle; uint32_t periph_reset_cycle; uint32_t base; uint8_t timer_pending; uint8_t timer_value; uint8_t busreq; uint8_t busack; uint8_t reset; uint8_t need_reset; uint8_t memptr_start_index; } segacd_context; segacd_context *alloc_configure_segacd(system_media *media, uint32_t opts, uint8_t force_region, rom_info *info); memmap_chunk *segacd_main_cpu_map(segacd_context *cd, uint8_t cart_boot, uint32_t *num_chunks); uint32_t gen_cycle_to_scd(uint32_t cycle, genesis_context *gen); void scd_run(segacd_context *cd, uint32_t cycle); void scd_adjust_cycle(segacd_context *cd, uint32_t deduction); #endif //SEGACD_H_