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: 10/11
Title: Atari 800XL Schematics
File: pokey.sch
Sheet: /POKEY/
ezContents
Schematics based on Atari 800 XL Service Manual
Includes fixes
Schematics tested on real hardware
R131 100
GND
GND
1 2 3 4 5 6 7 8
RN4
1 2 3 4 5 6 7 8
RN2
1 2 3 4 5 6 7 8
RN1
1 2 3 4 5 6 7 8
RN3
PWR_FLAG
L12
GND
C102
1nF
C78 1nF C77 1nF C76 1nF C75 1nF
R84 4.7K
R83 4.7K
R82 4.7K
R81 4.7K
R130 100
R129 100
R128 100
C74 1nF C73 1nF C72 1nF C71 1nF
C63
47nF
C66
47nF
R79 1.8K
L16 10µH
L15 10µH
X4
1
B
10
A
11
X3
12
X0
13
X1
14
X2
15
VDD
16
X6
2
X
3
X7
4
X5
5
INH
6
VEE
7
VSS
8
C
9
U24
CD4051B
X4
1
B
10
A
11
X3
12
X0
13
X1
14
X2
15
VDD
16
X6
2
X
3
X7
4
X5
5
INH
6
VEE
7
VSS
8
C
9
U25
CD4051B
R78 1.8K
C65
47nF
C62
100nF
L25 10µH
C98
10µF
R77 1.8K
L18 10µH
GND
L17 10µH
R76 1.8K
P0
14
VSS
1
P4
10
P5
11
P2
12
P3
13
P1
15
KR2
16
VCC
17
K5
18
K4
19
D3
2
K3
20
K2
21
K1
22
K0
23
SID
24
KR1
25
BCLK
26
ACLK
27
SOD
28
IRQ
29
D4
3
CS0
30
CS1
31
R/W
32
A3
33
A2
34
A1
35
A0
36
AUD
37
D0
38
D1
39
D5
4
D2
40
D6
5
D7
6
2
7
P6
8
P7
9
U22
POKEY
L24 10µH
R137
470
R96 47K
CR5 1N4148
GND
C70 100nF
C64
47nF
GND
R90 100
W1 R75 3K
R89
47K
C69
100nF
GND
R74 3K
D[0..7]
A[0..15]
U25_15
J5:+5V
J5:GND
U25_14 U25_13
U24_4
J8:11 J8:14
J8:3 J8:8
U24_2 U24_5 U24_1
U24_12
+5V_A
U25_5
J5:A_POT
J5:B_POT
U24_15
J1:CLOCK_OUT
J1:DATA_OUT
J1:CLOCK_IN
J1:DATA_IN
U25_2
+5V_A
J6:A_POT
J6:B_POT
U24_14 U24_13
J6:GND
J8:16 J8:15 J8:12 J8:17 J8:10
U25_1
RW
U25_4
PHI2
J8:2
+5V_A
J8:7 J8:5 J8:4
J8:_KR2
J8:1 J8:6
U25_13
IRQ
J6:+5V
POKEY_CS
POKEY_AUD
U25_14
+5V_A
U25_15
U25_12
U25_1
U25_5
U25_2
+5V_A
U25_4
+5V_A
U25_12
U24_4
U24_2
U24_5
U24_1
U24_12
U24_15
U24_14
U24_13
J8:13
GND
D7
D6
D5
D4
D2
D1
D0
A3
A2
A1
A0
D3