Atari 800XL

1 2 3 4 5 6
1 2 3 4 5 6
A
B
C
D
A
B
C
D
Date: 2020-01-15
KiCad E.D.A. kicad (5.1.4-0-10_14)
Rev: 2Size: A4
Id: 7/11
Title: Atari 800XL Schematics
File: control.sch
Sheet: /CONTROL/
ezContents
Schematics based on Atari 800 XL Service Manual
Includes fixes
Schematics tested on real hardware
R16
3K
C108
100nF
C106
100nF
VCC
14
GND
7
U19G
74LS14
C105
100nF
R106
3K
1 2
U19A
74LS14
3 4
U19B
74LS14
1213
U19F
74LS14
VCC
14
GND
7
U30C
74LS51
2
3
4
5
6
U30B
74LS51
1
10
11
12
13
8
9
U30A
74LS51
10
8
9
U18C
74LS08
R105
33
R104
33
R103
33
R102
33
R101
33
R100
33
R99
33
R98
33
VCC
14
IN
1
260
10
25
12
190
4
315
6
VSS
7
440
8
U29
DELAY_LINE
C107
100nF
C29
100nF
C32
100nF
D0
1
Q2
10
Q2
11
E23
12
Q3
13
Q3
14
D3
15
VCC
16
Q0
2
Q0
3
E01
4
Q1
5
Q1
6
D1
7
GND
8
D2
9
U28
74LS375
S
1
I1d
10
I0d
11
Zc
12
I1c
13
I0c
14
E
15
VCC
16
I0a
2
I1a
3
Za
4
I0b
5
I1b
6
Zb
7
GND
8
Zd
9
U27
74LS158
S
1
I1d
10
I0d
11
Zc
12
I1c
13
I0c
14
E
15
VCC
16
I0a
2
I1a
3
Za
4
I0b
5
I1b
6
Zb
7
GND
8
Zd
9
U26
74LS158
GND
GND
GNDGND
GND
GND
GND
GND
MA[0..7]
A[0..15]
+5V_B
+5V_B
+5V_B
+5V_B
+5V_B
+5V_B
MMU_CI
RAS
WRT
+5V_B
CAS
PB_EXTSEL
PHI2_SALLY
+5V_B
RW
MA3
MA5
MA4
A8
MA2
A1
MA6
A9
MA7
MA1
A2
MA0
A12
A10
A3
A11
A14
A6
A4
A13
A5
A7
A0
A15