Atari 800XL Technical Service Data

ATARI MODEL 800XL
HOWARD W. SAMS & COMPANY
COMPUTERFACTS ™ put easy to use, informative
technical data right at your fingertips. Each edition
includes specific service information on the individual
component, along with some overall troubleshooting hints.
The following information is just a sample of the many valuable time saving
features contained in this exclusive Sams COMPUTERFACTS publication:
• Preliminary Service Checks section is an easy to use, step by step guide for the
experienced technician or hobbyist, and even beginners.
• SAMS famous industry accepted standardized notation schematics containing
CircuiTrace® , GridTrace ™ , waveforms, voltages and stage identification.
WIT OF
- 11 Mf SH/4I5HH
\2
• Step by Step Troubleshooting guides the technician through the ncessary
procedures to quickly locate the problem.
TROUBLESHOOTING
MICROPROCESSOR CHIP (CPC) OPERATION
Verify the processor is functioning by checking the
signal 1 : on ’he address lines (pins 10 thru 24 of 1C I .'600)
and the data lines (pins 41 thru 56) using a logic probe or
a scope if a logic probe is used, refer to the "Logic
Chart" fur (lie correct readings. If a scope is used, the
waveforms on the address lines (except pins 22 and 22
which have no signal in Power l)p mode) should he
similar to Figure 1 The waveforms on the daia lines
should be similar to Figure 2.
01
^ , -J J J <
U60I
02
W Vt S. s <* «.
PIN
P 1 \
i
02
vVr^ J '
it U J k . s
PIN
04
PIN
2u.s
M it M U S -
♦ Logic Chart containing logic probe readings to isolate defective circuitry and
components.
LOGIC
PIN 1C
NO UI00
PIN
NO
1C
U100
PIN
NO
1C
urn
IC 1C
11102 UI04
IC
U105
IC
U106
IC
UKP
IC
LI 08
1C
UI09
1 P
21
p
1
i. 1 l
L I.
1. 1
1
2 P
22 p
2
p P P P P
P
P
P
3 P
22 p 2
H H H
H H II II
II
ecu
Remove staples and use cover for file folder.
• Quick Component Location using the SAMS exclusive GridTrace,
CircuiTracf., and component photographs.
• Complete Components Parts List in an easy to use format with field replace¬
ments shown when possible. SAMS unique semiconductor, chip and 1C cross-
reference gives you many replacements to choose from and is available at your
Electronic Distributor.
SEMICONDUCTORS (Select replacement for best results)
KbPLAC hMENI DA 1 A
ITFM
No.
TYPF.
No.
VIKtiR
Part No.
F.Cf i
Part No.
NTK RCA
Part No. Part No.
/F.NITH
Part No. NOTES
Ul02 1SS53 1140-2576 tC'G519
NTE51V SK9091/177
103-131
DI03
2N60FM
1K9-2527
ECC109 NTE109 SK3088 I03-Z900I
1)201 IN40O4CP
1201-4205 F.CCil 16
NTF1I6 SK3212
212-76-02
0501 Ihru
1SS53
11 Ay-2576 tC(J519
Nlt5IV , SK9091/I77
103-131
D502
_ 1
—
C’jrcuiTrace is a registered trademark of Howard W. Sams & Co.
COMPUTERFACTS and GriiYTracf are trademarks of Howard W. Sams A. Co.
Atari 800X1. is a trademark of Atari, Inc.
Atari is a registered trademark of Atari, lac.
To order, or for more information see your Sams Distributor, or
telephone 800-428-SAMS.
W
HOWARD W. SAMS &COMPANY
A Division of Macmillan. Inc.
4300 Mrs/, 62nd Street.
Indianapolis. Indiana 16268 i'SA
CC11
08951
ISBN: 0-672-08951-3

Atari 800XL Specifications

General

Manufacturer	Atari
Type	Home computer
Release year	1983
CPU	MOS Technology 6502C
RAM	64 KB
ROM	24 KB
Operating System	Atari OS
CPU Speed	1.79 MHz (NTSC) / 1.77 MHz (PAL)
Graphics	ANTIC and GTIA chips
Display resolution	160×192 to 320×192 pixels
Sound	POKEY chip
Storage	Cassette tape, floppy disk
Ports	Serial, parallel, monitor, joystick ports