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vdp fifo, tentative fix for broken save/load

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This commit is contained in:
kub 2020-02-16 14:08:48 +01:00
parent 29d99d6bb8
commit daf29df963
3 changed files with 78 additions and 39 deletions
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9
pico/pico_int.h
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@ -316,7 +316,10 @@ struct PicoVideo
unsigned char debug_p; // ... parsed: PVD_*
unsigned char addr_u; // bit16 of .addr
unsigned char hint_cnt;
unsigned char pad[0x0b];
unsigned char pad2;
unsigned short hv_latch; // latched hvcounter value
signed int fifo_cnt; // pending xfers for current FIFO queue entry
unsigned char pad[0x04];
};
struct PicoMisc
@ -339,7 +342,7 @@ struct PicoMisc
unsigned char eeprom_slave; // EEPROM slave word for X24C02 and better SRAMs
unsigned char eeprom_status;
unsigned char pad1; // was ym2612 status
unsigned short pad2; // 18 was dma_xfers
unsigned short dma_xfers; // 18 unused (was VDP DMA transfer count)
unsigned char eeprom_wb[2]; // EEPROM latch/write buffer
unsigned int frame_count; // 1c for movies and idle det
};
@ -856,6 +859,8 @@ extern int (*PicoDmaHook)(unsigned int source, int len, unsigned short **base, u
void PicoVideoFIFOSync(int cycles);
int PicoVideoFIFOHint(void);
int PicoVideoFIFOWrite(int count, int byte_p, unsigned sr_mask, unsigned sr_flags);
void PicoVideoSave(void);
void PicoVideoLoad(void);
// misc.c
PICO_INTERNAL_ASM void memcpy16bswap(unsigned short *dest, void *src, int count);