Hi,
sorry, there where a few bugs in the code.
I hope this one is correct:
cpy switch ; 3
beq .switch ; 23
bpl .wait ; 23
lda (ptr),y ; 5
sta GRPx ; 3
.cont: ; = 15
...
...
.switch: ; 6
lda end ; 3
sta switch ; 3
bcs .cont ; 3
.wait: ; 8
SLEEP 4 ; 4
bpl .cont ; 3
Setup:
switch = top row of sprite
end = (bottom row of spire) | $80
Works only for kernels where y (or x) is the row counter (counting
down) and doesn't start larger than 127.
Have fun!
Thomas
_______________________________________________________
Thomas Jentzsch | *** Every bit is sacred ! ***
tjentzsch at web dot de |
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