Z80 port map
Number | Read | Write | |
$00 | Read sound code from 68k | Clear sound code buffer | |
$08 | NMI enable | ||
$04~$07 | YM2610 I/O | ||
$08 | Set $F000~$F7FF bank | ||
$09 | Set $E000~$EFFF bank | ||
$0A | Set $C000~$DFFF bank | ||
$0B | Set $8000~$BFFF bank | ||
$0C | Reply to 68k | ||
$18 | NMI disable |