cc65/libsrc/atari/atari-10p2.s

;
; Graphics driver for the 80x192x9 (CIO mode 10, ANTIC mode F, GTIA mode $80) on the Atari.
;
; Fatih Aygun (2009)
;

	.include	"atari.inc"
	.include 	"zeropage.inc"

	.include 	"tgi-kernel.inc"
	.include        "tgi-mode.inc"
	.include        "tgi-error.inc"

	.macpack        generic

; ******************************************************************************

	; ----------------------------------------------------------------------
	;
	; Constants and tables
	;
	; ----------------------------------------------------------------------

; Graphics mode
	grmode = 10
; X resolution
	x_res = 80
; Y resolution
	y_res = 192
; Number of colors
	colors = 9
; Pixels per byte
	ppb = 2
; Screen memory size in bytes
	scrsize = x_res * y_res / ppb
; Pixel aspect ratio
	aspect = $0400				; 4:1
; Free memory needed
	mem_needed = 15339
; Number of screen pages
	pages = 2

.rodata
	mask_table:				; Mask table to set pixels
		.byte	%11110000, %00001111
	masks:					; Color masks
		.byte	$00, $11, $22, $33, $44, $55, $66, $77, $88
	bar_table:				; Mask table for BAR
		.byte	%11111111, %00001111, %00000000
	default_palette:
		.byte	$00, $0E, $32, $96, $68, $C4, $74, $EE, $4A

.code

; ******************************************************************************

.proc SETPALETTE

	; ----------------------------------------------------------------------
	;
	; SETPALETTE: Set the palette (in ptr1)
	;
	; ----------------------------------------------------------------------

.code
	; Copy the palette
	ldy     #colors - 1
loop:	lda     (ptr1),y
	sta     palette,y
	sta	PCOLR0,y
	dey
	bpl     loop

	; Done, reset the error code
        lda     #TGI_ERR_OK
        sta     error
        rts
.endproc

.include "atari_tgi_common.inc"