Atari 800

Use of Player/Missile Graphics
with
BASIC, cont.
(9, cont.)
Example to Generate a rectangular box player, eight color
clocks wide and four lines high in immediate mode.
STEP TYPE
1 GRAPHICS 8
2 POKE 559, 62
3 POKE 53248,120
4
POKE 704,88
5 I = PEEK(l06)-8
6 POKE 54279,I
7 POKE 53277,3
8 J = I * 256 + 1024
9 POKE J + 125,255
POKE J + 126,129
POKE J + 127,129
POKE J + 128,255
RESULT
Setup Mode 8 Playfield
Enable P/M DMA single line
Set horizontal position
Set color to pink
Get
P/M base address
Store in base register
Enable P/M DMA
Get player starting address
Draw player on screen
A-3-