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

2015-10-12 15:44:41 +02:00
parent 2a0f6c420b
commit 21732e3c5b
5 changed files with 39 additions and 25 deletions
--- a/libsrc/c64/soft80_cgetc.s
+++ b/libsrc/c64/soft80_cgetc.s
@@ -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