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INL-retro-progdump
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Merge branch 'issue50' into 'master' 

Firmware fix for MMC3 dumping issues

See merge request InfiniteNesLives/INL-retro-progdump!34
This commit is contained in:
Paul Molloy 2020-06-13 22:15:40 +00:00
parent aec0b7fa42 ce1323be4b
commit e0d4a92f28
2 changed files with 3 additions and 0 deletions
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firmware/DFU_release/INLretro6_PCBv2_1_FWv2_03_03_iss50_ekh.dfu Normal file
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3
firmware/source/nes.c
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@ -918,6 +918,7 @@ uint8_t nes_cpu_page_rd_toggle( uint8_t *data, uint8_t addrH, uint8_t first, uin
NOP();
NOP();
NOP();
NOP(); // EKH: Needed one more NOP for MMC3 PRG ROM
//latch data
DATA_RD(data[i]);
@ -967,12 +968,14 @@ uint8_t nes_ppu_page_rd_poll( uint8_t *data, uint8_t addrH, uint8_t first, uint8
ADDRL(first); //doing this prior to entry and right after latching
NOP(); //adding extra NOP as it was needed on PRG
//gives longest delay between address out and latching data
NOP(); // EKH: Needed another NOP for the first byte of 4k blocks on several MMC3 carts
for( i=0; i<=len; i++ ) {
//couple more NOP's waiting for data
if ( poll == FALSE ) {
NOP(); //one prob good enough considering the if/else
NOP();
NOP(); // EKH: Needed another one for several MMC3 carts
} else {
usbPoll();
}