Bandai 2001
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The Bandai 2001 (LUXSOR) is one of the two mappers used in WonderSwan cartridges.
In addition to the normal Mapper banking interface, the 2001 adds three registers for interacting with a Microwire EEPROM which may optionally be present on the cartridge board:
| Category | Port | Description | Bits | Type | Notes |
|---|---|---|---|---|---|
| External EEPROM | $C4 | External EEPROM Data | dddd dddd dddd dddd | R16 | Data read (d) |
| W16 | Data to write (d) | ||||
| $C6 | External EEPROM Command | 0001 CCaa aaaa aaaa or 0000 01CC aaaa aaaa or 0000 0001 CCaa aaaa |
RW16 | Command and address | |
| $C8 | External EEPROM Control | ASWR .... | W8 | Abort (A), Short (S), Write (W), Read (R) | |
| External EEPROM Status | .... ..rd | R8 | Ready (r), Done (d) |
