Atari XL - Page 247

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Display List Instructions
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Antic can be instructed to jump, in which case it
treats the next two bytes in the display list as the
address to which it shouldjump:
JUMP TO ADDRESS 1
JUMP AT VERT BLANK 65
Most instructions can be modified as follows:
add 16 HORIZONTAL SCROLL
add 32 VERTICAL SCROLL
add 64 LOAD MEMORY SCAN
(REFRESHES SCREEN
MEMORY POINTERS)