ldx #$00 ; Clear high byte
rts
-; ------------------------------------------------------------------------
-; HORLINE: Draw a horizontal line from X1/Y to X2/Y, where X1 = ptr1,
-; Y = ptr2 and X2 = ptr3, using the current drawing color.
-;
-; This is a special line drawing entry used when the line is know to be
-; horizontal, for example by the BAR emulation routine. If the driver does
-; not have special code for horizontal lines, it may just copy Y to Y2 and
-; proceed with the generic line drawing code.
-;
-; Note: Line coordinates will always be sorted (Y1 <= X2) and clipped.
-;
-; Must set an error code: NO
-;
-
-HORLINE:
- lda ptr2
- sta ptr4
- lda ptr2+1
- sta ptr4+1
-; jmp LINE
-
; ------------------------------------------------------------------------
; LINE: Draw a line from X1/Y1 to X2/Y2, where X1/Y1 = ptr1/ptr2 and
; X2/Y2 = ptr3/ptr4 using the current drawing color.
;
; Must set an error code: NO
;
-
-; Note: This function needs optimization. It's just a cheap translation of
-; the original C wrapper and could be written much smaller (besides that,
+
+; Note: This function needs optimization. It's just a cheap translation of
+; the original C wrapper and could be written much smaller (besides that,
; calling LINE is not a good idea either).
BAR: lda Y2