Atari XL User Manual

Graphics
143
Two colours may be used; the background colour is
controlled by colour register 4 and selected by
COLOR 0, the second colour is controlled by colour
register 0 and selected as COLOR 1.
Mode 5
Four colours are available in this mode, controlled
in the same way as those in mode 3.
The resolution is the same as that of mode 4 - 48
rows of80 columns, or 40x80 with the text window.
Mode6
This mode has two colours, controlled as in mode 4.
The resolution is 96 rows of 160 columns, or 80x160
if the text window is displayed.
Mode7
This mode has four colours, controlled as in mode 3,
with the same resolution as mode 6.
ModeS
Mode 8 has the highest resolution of all the display
modes, 192 rows of 320 columns are allowed, or
160x320 with the text window.
The colour available is similar to that used in mode
0: only one colour can be used, with two possible
luminances. The colour and the luminance of the
background are controlled by colour register 2, and
selected by COLOR O. The second luminance is
controlled by the luminance of colour register 1,
and may be selected by COLORI.
Because this mode uses the colour registers in the
same way as the mode 0 text display, the

Atari XL Specifications

General

Release Year	1983
CPU	MOS Technology 6502C
Graphics	ANTIC, GTIA
Sound	POKEY (4 channels)
Storage	Cassette tape
Ports	Cartridge
Operating System	Atari BASIC
CPU Speed	1.79 MHz
RAM	64 KB