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Small optimzation by Stefan Haubenthal

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3594 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2005-08-28 20:57:16 +00:00
parent 7b2cd44f8a
commit f3c6fbc72a
1 changed files with 4 additions and 7 deletions
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libsrc/c64/c64-ptvjoy.s
+4 -7
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@@ -116,12 +116,12 @@ joy2: dex
; Read joystick 3
joy3: dex
bne joy4
lda #%10000000 ; cia 2 port B Data-Direction
sta CIA2_DDRB ; bit 7: out bit 6-0: in
joy3: dex
bne joy4
lda #$80 ; cia 2 port B read/write
sta CIA2_PRB ; (output one at PB7)
@@ -131,10 +131,7 @@ joy3: dex
; Read joystick 4
joy4: lda #%10000000 ; cia 2 port B Data-Direction
sta CIA2_DDRB ; bit 7: out bit 6-0: in
lda #$00 ; cia 2 port B read/write
joy4: lda #$00 ; cia 2 port B read/write
sta CIA2_PRB ; (output zero at PB7)
lda CIA2_PRB ; cia 2 port B read/write