Atari ST series - Page 230

Ongibit
Set a Bit on Sound Chip I/O Port
Ongibit() Opcode = 30
A to m ically sets a sin g le bit of th e P o rt A I/O re g iste r o n th e PSG so u n d
ch ip .
C macro format
in t b itn u m ;
O n gib it(b itn u m );
Machine language format
m o v e .w
m o v e .w
trap
ad d q .l
Inputs
b itn u m
Results
N o n e
See also
O ffgibit(
# b itn u m , - (sp )
# 3 0 , - ( s p )
# 1 4
# 4 ,s p
w o rd T h e n u m b e r o f th e bit (0 - 7 ) to ch an g e.
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