.export _cputcxy, _cputc
.export plot, cputdirect, putchar
- .import gotoxy, mul20
+ .import gotoxy, _mul20
.importzp ptr4
.import setcursor
pha ; save char
lda ROWCRS_5200
- jsr mul20 ; destroys tmp4
- clc
+ jsr _mul20 ; destroys tmp4, carry is cleared
adc SAVMSC ; add start of screen memory
sta ptr4
txa