|
Pin
|
Name
|
Description |
|
1 |
GND
|
System Ground
|
|
2 |
+5V
|
System Vcc
|
|
3 |
+5V
|
System Vcc
|
|
4 |
/IRQ
|
Interrupt request
|
|
5 |
R/W
|
System Read/Write Signal
|
|
6 |
DClock
|
8.18MHz Video Dot Clock
|
|
7 |
I/O1
|
I/O Chip select $de00-deff
|
|
8 |
/GAME
|
Sensed for memory map configuration
|
|
9 |
/EXROM
|
Sensed for memory map configuration
|
|
10
|
I/O2
|
I/O Chip select $df00-dfff
|
|
11
|
/ROML
|
External ROM select $8000-Bfff
|
|
12
|
BA
|
Bus available output
|
|
13
|
/DMA
|
Direct memory access input
|
|
14
|
D7
|
Data bit 7 |
|
15
|
D6
|
Data bit 6 |
|
16
|
D5
|
Data bit 5 |
|
17
|
D4
|
Data bit 4 |
|
18
|
D3
|
Data bit 3 |
|
19
|
D2
|
Data bit 2 |
|
20
|
D1
|
Data bit 1 |
|
21
|
D0
|
Data bit 0 |
|
22
|
GND
|
System Ground
|
|
|
|
|
|
A |
GND
|
System Ground
|
|
B |
/ROMH
|
External ROM Select $c000-ffff
|
|
C |
/RESET
|
System Reset Signal
|
|
D |
/NMI
|
Non-Maskable Interrupt
|
|
E |
1MHz
|
System 1MHz clock
|
|
F |
TA15
|
Translated address bit 15
|
|
H |
TA14
|
Translated address bit 14
|
|
J |
TA13
|
Translated address bit 13
|
|
K |
TA12
|
Translated address bit 12
|
|
L |
TA11
|
Translated address bit 11
|
|
M |
TA10
|
Translated address bit 10
|
|
N |
TA9
|
Translated address bit 9 |
|
P |
TA8
|
Translated address bit 8 |
|
R |
SA7
|
Shared address bit 7 |
|
S |
SA6
|
Shared address bit 6 |
|
T |
SA5
|
Shared address bit 5 |
|
U |
SA4
|
Shared address bit 4 |
|
V |
SA3
|
Shared address bit 3 |
|
W |
SA2
|
Shared address bit 2 |
|
X |
SA1
|
Shared address bit 1 |
|
Y |
SA0
|
Shared address bit 0 |
|
Z |
GND
|
System Ground
|
