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maintain lsb of cursor x position internally, saves some bytes and some cycles too :)

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This commit is contained in:
mrdudz 2015-10-12 15:44:41 +02:00
parent 2a0f6c420b
commit 21732e3c5b
5 changed files with 39 additions and 25 deletions
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8
libsrc/c64/soft80_cgetc.s
View file

@ -5,6 +5,7 @@
;
.export soft80_cgetc
.import soft80_internal_cursorxlsb
.import cursor
.importzp tmp1
@ -45,9 +46,10 @@ invertcursor:
ldy #$00
jsr setcolor
lda CURS_X
and #$01
tax
;lda CURS_X
;and #$01
;tax
ldx soft80_internal_cursorxlsb
@lp1:
lda (SCREEN_PTR),y
eor nibble,x

3
libsrc/c64/soft80_conio.s
View file

@ -9,6 +9,7 @@
.import soft80_kclrscr, soft80_charset
.export soft80_internal_textcolor, soft80_internal_bgcolor
.export soft80_internal_cursorxlsb
.importzp ptr1, ptr2, ptr3
@ -104,4 +105,6 @@ soft80_internal_textcolor:
.res 1
soft80_internal_bgcolor:
.res 1
soft80_internal_cursorxlsb:
.res 1

42
libsrc/c64/soft80_cputc.s
View file

@ -13,6 +13,7 @@
.import xsize
.import soft80_kplot
.import soft80_internal_bgcolor, soft80_internal_textcolor
.import soft80_internal_cursorxlsb
.importzp tmp4,tmp3
@ -86,6 +87,7 @@ advance:
sty CURS_X
tya
and #$01
sta soft80_internal_cursorxlsb
bne @L5
lda SCREEN_PTR
@ -146,8 +148,9 @@ _space:
.endif
;ldy #$00 ; is still $00
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @l1
.repeat 8,line
@ -182,8 +185,9 @@ _spaceinvers:
sta (CRAM_PTR),y ; vram
.endif
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @l1
.repeat 8,line
@ -240,8 +244,9 @@ soft80_putchar:
lda RVS
jne _invers
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @l1
.repeat 8,line
@ -279,8 +284,9 @@ _back:
; output inverted character
_invers:
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @l1
.repeat 8,line
@ -366,8 +372,9 @@ remcolor:
;and #$0f
sta tmp3 ; A contains colram
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @sk3
; vram = colram
@ -436,8 +443,9 @@ soft80_putcolor:
; botch characters in the cell are used
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
bne @sk2 ; jump if odd xpos
; vram = textcol
@ -450,8 +458,9 @@ soft80_putcolor:
jsr soft80_checkchar
bcs @sk1 ; char at current position => overwrite 1st
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
beq @sk3 ; jump if even xpos
@sk2:
; colram = textcol
@ -481,8 +490,9 @@ soft80_checkchar:
;ldy #$00 ; is still $00
lda CURS_X
and #$01
;lda CURS_X
;and #$01
lda soft80_internal_cursorxlsb
jne @l1a
.repeat 8,line

5
libsrc/c64/soft80_kplot.s
View file

@ -6,6 +6,7 @@
;
.export soft80_kplot
.import soft80_internal_cursorxlsb
.include "c64.inc"
.include "soft80.inc"
@ -25,6 +26,10 @@ soft80_kplot:
adc _bitmapxhi,y
sta SCREEN_PTR+1
tya
and #1
sta soft80_internal_cursorxlsb
; calc pointer to vram
tya
lsr a ; NOTE: we can save 2 cycles here at the expense of

6
libsrc/c64/soft80_scrsize.s
View file

@ -12,9 +12,3 @@ soft80_screensize:
ldy #screenrows
ldx #charsperline
rts
;-------------------------------------------------------------------------------
; force the init constructor to be imported
.import soft80_init
conio_init = soft80_init