Minor optimization.

This commit is contained in:
oliverschmidt 2007-11-29 21:56:55 +00:00
parent a8313c3b39
commit b51a680a02

View File

@ -30,7 +30,7 @@
;
; Author: Adam Dunkels <adam@sics.se>, Oliver Schmidt <ol.sc@web.de>
;
; $Id: cs8900a.S,v 1.2 2007/11/24 12:57:09 oliverschmidt Exp $
; $Id: cs8900a.S,v 1.3 2007/11/29 21:56:55 oliverschmidt Exp $
;
;---------------------------------------------------------------------
@ -261,6 +261,7 @@ fixup31:sta ppdata
ldx bufaddr+1
sta ptr
stx ptr+1
ldx cnt+1
ldy #$00
read:
fixup32:lda rxtxreg
@ -273,7 +274,7 @@ fixup33:lda rxtxreg+1
inc ptr+1
: cpy cnt
bne read
dec cnt+1
dex
bpl read
; Return frame length
@ -341,6 +342,7 @@ fixup44:sta ppdata
ldx bufaddr+1
sta ptr
stx ptr+1
ldx cnt+1
ldy #$00
write: lda (ptr),y
fixup45:sta rxtxreg
@ -352,7 +354,7 @@ fixup46:sta rxtxreg+1
inc ptr+1
: cpy cnt
bne write
dec cnt+1
dex
bpl write
rts