Neo Geo

Z80 Port Map


參考資訊:
1. wiki

Port

Address Mask Read Write
0x00 0x0c 1. Read sound code from 68k
2. Acknowledge NMI
Clear sound code from 68k to 0x00
0x07~0x04 0x0c YM2610 I/O YM2610 I/O
0x08 0x1c Set 0xf000~0xf7ff bank Enable NMIs
0x09 0x1c Set 0xe000~0xefff bank Enable NMIs
0x0a 0x1c Set 0xc000~0xdfff bank Enable NMIs
0x0b 0x1c Set 0x8000~0xbfff bank Enable NMIs
0x0c 0x0c See SDRD1 Reply to 68k
0x18 0x1c See address 0x08 Disable NMIs


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