snake6502/src/data.asm

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; Data section - Not initialized variables ($CD00 - $CDFF)
; ----------------------------------------------------------------------
; Number of interrupt
; Used as counter to be decremented to do some things less frequently
irqn:
BYTE
; Direction of the snake (2,4,6,8 as down,left,right,up)
; 5 means `pause`
direction:
BYTE
; Snake head coordinates in video memory
snakeX:
BYTE
snakeY:
BYTE
; Parameters for calcTileMem
calcTileX:
BYTE
calcTileY:
BYTE
; List start and length
listStart:
BYTE
length:
BYTE
; Random value
random:
BYTE
; Status
status:
BYTE
; Level temporary vars
levelT:
BYTE
levelN:
BYTE
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; next status after delay
delayStatus:
BYTE
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; Total score of the game
score:
WORD