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| Address
|
DEF name
|
Size
|
Set by
|
Description
|
| $10FD80
|
BIOS_SYSTEM_MODE
|
byte
|
BIOS
|
0:system mode, $80:game mode
|
| $10FD82
|
BIOS_MVS_FLAG
|
byte
|
BIOS
|
0:AES, 1:MVS
|
| $10FD83
|
BIOS_COUNTRY_CODE
|
byte
|
BIOS
|
0:Japan, 1:USA, 2:Europe
|
| $10FD84~$10FD93
|
BIOS_GAME_DIP
|
16 bytes
|
BIOS
|
Software DIPs values
|
| $10FD94
|
BIOS_P1STATUS
|
byte
|
BIOS
|
0:no connection, 1:normal joypad, 2:expanded joypad, 3:Mahjong controller, 4:Keyboard
|
| $10FD95
|
BIOS_P1PREVIOUS
|
byte
|
BIOS
|
DCBA Right Left Bottom Top (positive logic)
|
| $10FD96
|
BIOS_P1CURRENT
|
byte
|
BIOS
|
DCBA Right Left Bottom Top (positive logic)
|
| $10FD97
|
BIOS_P1CHANGE
|
byte
|
BIOS
|
Active edge DCBA Right Left Bottom Top (positive logic)
|
| $10FD98
|
BIOS_P1REPEAT
|
byte
|
BIOS
|
Active edge + repeat every 8 frames after 16 frames. DCBA Right Left Bottom Top (positive logic)
|
| $10FD99
|
BIOS_P1TIMER
|
byte
|
BIOS
|
Countdown ?
|
| $10FD9A~$10FD9F
|
Same for P2
|
5 bytes
|
BIOS
|
See above
|
| $10FDA0~$10FDA6
|
Same for P3
|
5 bytes
|
BIOS
|
See above
|
| $10FDA7~$10FDAB
|
Same for P4
|
5 bytes
|
BIOS
|
See above
|
| $10FDAC
|
BIOS_STATCURNT
|
byte
|
BIOS
|
Select P4, Start P4, Select P3, Start P3, Select P2, Start P2, Select P1, Start P1 (positive logic)
|
| $10FDAD
|
BIOS_STATCHANGE
|
byte
|
BIOS
|
Select P4, Start P4, Select P3, Start P3, Select P2, Start P2, Select P1, Start P1 (positive logic)
|
| $10FDAE
|
BIOS_USER_REQUEST
|
byte
|
BIOS
|
Set by the USER subroutine. 0:Init, 1:Boot animation, 2:Demo, 3:Title
|
| $10FDAF
|
BIOS_USER_MODE
|
byte
|
Game
|
0:Init/Boot animation, 1:Title/Demo, 3:Game
|
| $10FDB0
|
BIOS_CREDIT_DEC
|
4 bytes
|
Game
|
Credit decrement value for each player when calling CREDIT DOWN.
|
| $10FDB4
|
BIOS_START_FLAG
|
byte
|
BIOS
|
Used when calling the PLAYER START subroutine. Last 4 bits correspond to the player who pushed start.
|
| $10FDB6
|
BIOS_PLAYER_MOD
|
4 bytes
|
Game
|
Sets player status. 0:Never played, 1:Playing, 2:Continue option being displayed, 3:Game over
|
| $10FDBE
|
BIOS_MESS_POINT
|
longword
|
Game
|
MESS_OUT buffer pointer
|
| $10FDC2
|
BIOS_MESS_BUSY
|
byte
|
Game
|
0:Allow MESS_OUT, 1:Skip MESS_OUT
|
| $10FEE4
|
|
byte
|
BIOS
|
Frame counter (internal)
|
- Memory card related
- BIOS_CRDF equ $10FDC4 ;byte: function to perform when calling BIOSF_CRDACCESS, see below table
- BIOS_CRDRESULT equ $10FDC6 ;byte: 00 on success, else 80+ and encodes the error, see below table
- BIOS_CRDPTR equ $10FDC8 ;longword: pointer to read from/write to
- BIOS_CRDSIZE equ $10FDCC ;word: how much data to read/write from/to card
- BIOS_CRDNGH equ $10FDCE ;word: usually game NGH. Unique identifier for the game that 'owns' the save file
- BIOS_CRDFILE equ $10FDD0 ;word: each NGH has up to 16 save 'files' associated with
- Calendar, only on MVS (in BCD)
- BIOS_YEAR equ $10FDD2 ;last 2 digits of year
- BIOS_MONTH equ $10FDD3
- BIOS_DAY equ $10FDD4
- BIOS_WEEKDAY equ $10FDD5 ;Sunday = 00, Monday = 01 ... Saturday = 06
- BIOS_HOUR equ $10FDD6 ;24 hour time
- BIOS_MINUTE equ $10FDD7
- BIOS_SECOND equ $10FDD8
- BIOS_SELECT_TIMER equ $10FDDA ;Byte: game start countdown
- BIOS_DEVMODE equ $10FE80 ;Byte: non-zero for developer mode
- Upload to DRAM
- BIOS_UPDEST equ $10FEF4 ;longword: destination address (!)
- BIOS_UPSRC equ $10FEF8 ;longword: source address
- BIOS_UPSIZE equ $10FEFC ;longword: size
- BIOS_UPZONE equ $10FEDA ;byte: zone (0=PRG, 1=FIX, 2=SPR, 3=Z80, 4=PCM, 5=PAT)
- BIOS_UPBANK equ $10FEDB ;byte: bank