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- ;---------------------------------------------------------------------------------
- ; SNES ROM bank map
- ;---------------------------------------------------------------------------------
- ; Written by: Neviksti
- ; This is the standard include file I use for programming the main CPU processor
- ; with WLA. If anyone uses my code, please share your creations with me
- ; as I am always curious :)
- ;---------------------------------------------------------------------------------
- ; == LoRom =========================
- .MEMORYMAP ; Tell WLA that the SNES has ROM at locations ;$8000-$FFFF in every bank
- SLOTSIZE $8000 ; and that this area is $8000 bytes in size.
- DEFAULTSLOT 0 ; There is only a single slot in SNES, other consoles
- SLOT 0 $8000 ; may have more slots per bank.
- .ENDME
- .ROMBANKSIZE $8000 ; Every ROM bank is 32 KBytes in size
- .ROMBANKS 8 ; 2Mbits -- Tells WLA that you want to use 8 ROM banks.
- .DEFINE HEADER_OFF $0000
- ; ===========================
- ; == HiRom =========================
- ;
- ;.MEMORYMAP ; Tell WLA that the SNES has ROM at locations 0000-$FFFF in every bank
- ;SLOTSIZE $10000 ; and that this area is $10000 bytes in size.
- ;DEFAULTSLOT 0 ; There is only a single slot in SNES, other consoles
- ;SLOT 0 $0000 ; may have more slots per bank.
- ;.ENDME
- ;
- ;.ROMBANKSIZE $10000 ; Every ROM bank is 64 KBytes in size, also necessary.
- ;.ROMBANKS 32 ; 16Mbits -- Tells WLA that you want to use 32 ROM banks.
- ;.DEFINE HEADER_OFF $8000
- ; ===========================
- ;-------------------------------------------------------------------------------
- .BANK 0 SLOT 0 ; The SLOT 0 may be ommited, as SLOT 0 is the DEFAULTSLOT
- ; === Cartridge Header - part 1 - =====================
- .ORG $7FB0 + HEADER_OFF
- .DB "00" ; New Licensee Code
- .DB "SNES" ; ID
- .ORG $7FC0 + HEADER_OFF
- .DB "Test Program " ; Title (can't be more than 21 bytes, and should probably be a full 21 bytes)
- ; "123456789012345678901"
- .ORG $7FD5 + HEADER_OFF
- .DB $20 ; Memory Mode ( $20 = Slow LoRom, $21 = Slow HiRom )
- .BANK 0 SLOT 0
- ; === Cartridge Header - part 2 - =====================
- .ORG $7FD6 + HEADER_OFF
- .DB $00 ; Contents ( $00 = ROM only, $01 = ROM and RAM, $02 = ROM and Save RAM)
- .DB $08 ; ROM Size ( $08 = 2 Mbit, $09 = 4 Mbit, $0A = 8Mbit, $0B = 16Mbit ... etc )
- .DB $00 ; SRAM Size ( $00 = 0 bits, $01 = 16 kbits, $02 = 32 kbits, $03 = 64 kbits )
- .DB $01 ; Country ( $01 = USA )
- .DB $00 ; Licensee Code
- .DB $00 ; Version
- .DW $0000 ; Checksum Complement (not calculated ... but who cares?)
- .DW $0000 ; Checksum
- .BANK 0 SLOT 0
- ; === Interrupt Vector Table ====================
- .ORG $7FE4 + HEADER_OFF ; === Native Mode ===
- .DW EmptyHandler ; COP
- .DW EmptyHandler ; BRK
- .DW EmptyHandler ; ABORT
- .DW VBlank ; NMI
- .DW $0000 ; (Unused)
- .DW EmptyHandler ; IRQ
- .ORG $7FF4 + HEADER_OFF ; === Emulation Mode ===
- .DW EmptyHandler ; COP
- .DW $0000 ; (Unused)
- .DW EmptyHandler ; ABORT
- .DW EmptyHandler ; NMI
- .DW Main ; RESET
- .DW EmptyHandler ; IRQ/BRK
- ; ============================================
- .BANK 0 SLOT 0
- .org HEADER_OFF
- .SECTION "EmptyVectors" SEMIFREE
- EmptyHandler:
- rti
- EmptyVBlank:
- rep #30
- pha
- php
- sep #$20
- lda $4210 ;clear NMI Flag
- plp
- pla
- rti
- .ENDS
- .EMPTYFILL $FF
- ; --- Reminder to self: WLA doesn't seem to handle the .BASE directive
- ; correctly yet. I need to check into this
- ;.BASE $40 ;SLOW HiRom
- ;.BASE $80 ;FAST LoRom
- ;.BASE $C0 ;FAST HiRom
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