> This does exactly what I want it to, except one thing: the fire button
still
> acts wonky on the Atari. What's the normal way to debounce the fire
button? I
I was pretty pleased with my debounce code for the console switches in Qb.
With minor modification this can work for joystick buttons, too...
GetState
sta temp
and SWCHB
cmp #1
ror
eor #D7
and temp+1 ; D1 SWCHB -> D7
asl
rol temp+1 ; sneaky! keep C on D0
lda SWCHB
eor #3
and #3
beq SW2 ; both NOT pressed -> enable both
and temp
beq SW3 ; THIS one NOT pressed?
clc
bcc SW3
SW2 sec
SW3 ror temp+1 ; if button pressed, -> 0 (and
D0->C)
rts
Buggered if I can figure out how it works, now ;)
The above code will debounce any console switch, passed in A.
Usage is...
lda #D1 ; SELECT
jsr GetState
bcc CheckReset
Cheers
A
-
Andrew Davie, TwoHeaded Software
adavie@xxxxxxxxxxxxx
-
Archives (includes files) at http://www.biglist.com/lists/stella/archives/
Unsub & more at http://www.biglist.com/lists/stella/
