Simple SNES shoot-'em-up game.
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58 lines
1.5 KiB

; LoRom header.
.MEMORYMAP
SLOTSIZE $8000 ; The slot is $8000 bytes in size.
DEFAULTSLOT 0 ; The SNES only has 1 slot.
SLOT 0 $8000 ; Define's Slot 0's starting address.
.ENDME
.ROMBANKSIZE $8000 ; Every ROM bank is 32 KB in size.
.ROMBANKS 8 ; 8 ROM banks = 2 Mb (256 KB).
.SNESHEADER
ID "SNES"
NAME "PEW! PEW! " ; Program title. Should be 21 bytes long;
; "123456789012345678901" ; use spaces for unused bytes of the name.
SLOWROM
LOROM
CARTRIDGETYPE $00 ; $00 = ROM only.
ROMSIZE $08 ; $08 = 2 Mbits.
SRAMSIZE $00 ; No SRAM.
COUNTRY $01 ; $01 = U.S.; $00 = Japan.
LICENSEECODE $00
VERSION $00 ; $00 = 1.00, $01 = 1.01, etc.
.ENDSNES
.SNESNATIVEVECTOR ; Native Mode interrupt vector table.
COP EmptyHandler
BRK EmptyHandler
ABORT EmptyHandler
NMI VBlankHandler
IRQ EmptyHandler
.ENDNATIVEVECTOR
.SNESEMUVECTOR ; Emulation Mode interrupt vector table.
COP EmptyHandler
ABORT EmptyHandler
NMI EmptyHandler
RESET Start
IRQBRK EmptyHandler
.ENDEMUVECTOR
; Defines the ROM bank and the slot it is inserted in memory.
; .ORG 0 is really $8000, because the slot starts at $8000.
.BANK 0 SLOT 0
.ORG 0
.SECTION "EmptyVectors" SEMIFREE
EmptyHandler:
rti
.ENDS
; Fills unused areas with $00.
; This is the opcode for BRK, which will halt the SNES if executed.
.EMPTYFILL $00