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Stopped the C128 mouse drivers from blocking certain keys such as '1', '2', and 'Q'.

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This extra fix is needed because the C128 keyboard scanner works a little differently than the C64 scanner works.
Fixes #696. Fixes #853.
This commit is contained in:
Greg King
2020-07-14 16:06:21 -04:00
parent 3558c0796d
commit 9023e975df
5 changed files with 15 additions and 14 deletions
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6
libsrc/c128/mou/c128-inkwell.s
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@@ -2,7 +2,7 @@
; Driver for the Inkwell Systems 170-C and 184-C lightpens.
;
; 2014-04-26, Christian Groessler
; 2014-09-10, Greg King
; 2020-07-14, Greg King
;
.include "zeropage.inc"
@@ -414,8 +414,8 @@ IRQ: jsr CPREP
ldy #%00000000 ; Set ports A and B to input
sty CIA1_DDRB
sty CIA1_DDRA ; Keyboard won't look like buttons
;lda #%01111111 ; (Keyboard scan leaves this in port A)
;sta CIA1_PRA
lda #%11111111
sta CIA1_PRA
lda CIA1_PRB ; Read Control Port 1
dec CIA1_DDRA ; Set port A back to output
eor #%11111111 ; Bit goes up when button goes down