mirror of
https://github.com/cc65/cc65.git
synced 2024-12-28 06:30:16 +00:00
54 lines
2.0 KiB
ArmAsm
54 lines
2.0 KiB
ArmAsm
;
|
|
; Oliver Schmidt, 30.05.2004
|
|
;
|
|
; Apple2 ROM routines
|
|
;
|
|
|
|
.export TEXT
|
|
.export HGR2
|
|
.export HGR
|
|
.export HCLR
|
|
.export BKGND
|
|
.export HPOSN
|
|
.export HPLOT
|
|
.export HLIN
|
|
.export HFIND
|
|
.export DRAW
|
|
.export XDRAW
|
|
.export SETHCOL
|
|
|
|
; Graphics entry points, by cbmnut (applenut??) cbmnut@hushmail.com
|
|
TEXT := $F399 ; Return to text screen
|
|
HGR2 := $F3D8 ; Initialize and clear hi-res page 2.
|
|
HGR := $F3E2 ; Initialize and clear hi-res page 1.
|
|
HCLR := $F3F2 ; Clear the current hi-res screen to black.
|
|
BKGND := $F3F6 ; Clear the current hi-res screen to the
|
|
; last plotted color (from ($1C).
|
|
HPOSN := $F411 ; Positions the hi-res cursor without
|
|
; plotting a point.
|
|
; Enter with (A) = Y-coordinate, and
|
|
; (Y,X) = X-coordinate.
|
|
HPLOT := $F457 ; Calls HPOSN and tries to plot a dot at
|
|
; the cursor's position. If you are
|
|
; trying to plot a non-white color at
|
|
; a complementary color position, no
|
|
; dot will be plotted.
|
|
HLIN := $F53A ; Draws a line from the last plotted
|
|
; point or line destination to:
|
|
; (X,A) = X-coordinate, and
|
|
; (Y) = Y-coordinate.
|
|
HFIND := $F5CB ; Converts the hi-res coursor's position
|
|
; back to X- and Y-coordinates; stores
|
|
; X-coordinate at $E0,E1 and Y-coordinate
|
|
; at $E2.
|
|
DRAW := $F601 ; Draws a shape. Enter with (Y,X) = the
|
|
; address of the shape table, and (A) =
|
|
; the rotation factor. Uses the current
|
|
; color.
|
|
XDRAW := $F65D ; Draws a shape by inverting the existing
|
|
; color of the dots the shape draws over.
|
|
; Same entry parameters as DRAW.
|
|
SETHCOL := $F6EC ; Set the hi-res color to (X), where (X)
|
|
; must be between 0 and 7.
|
|
|