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Fixes for joysticks 3+4 in the ptv joystick driver. Contributed by Marco van

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den Heuvel.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4573 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2010-02-02 17:05:18 +00:00
parent 972c3fd7ca
commit 31819685af
1 changed files with 4 additions and 1 deletions
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5
libsrc/c64/c64-ptvjoy.s
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@@ -116,10 +116,11 @@ joy2: dex
; Read joystick 3 ; Read joystick 3
joy3:
lda #%10000000 ; cia 2 port B Data-Direction lda #%10000000 ; cia 2 port B Data-Direction
sta CIA2_DDRB ; bit 7: out bit 6-0: in sta CIA2_DDRB ; bit 7: out bit 6-0: in
joy3: dex dex
bne joy4 bne joy4
lda #$80 ; cia 2 port B read/write lda #$80 ; cia 2 port B read/write
@@ -127,6 +128,7 @@ joy3: dex
lda CIA2_PRB ; cia 2 port B read/write lda CIA2_PRB ; cia 2 port B read/write
and #$1f ; get bit 4-0 (PB4-PB0) and #$1f ; get bit 4-0 (PB4-PB0)
eor #$1f
rts rts
; Read joystick 4 ; Read joystick 4
@@ -142,6 +144,7 @@ joy4: lda #$00 ; cia 2 port B read/write
and #%00100000 ; get bit 5 (PB5) and #%00100000 ; get bit 5 (PB5)
lsr lsr
ora tmp1 ora tmp1
eor #$1f
ldx #0 ldx #0
rts rts