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QRZ.RU > Технические справочники > HwB: The Hardware Book (Mirror) > HwB: C128 Expansion Bus Connector
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HwB: C128 Expansion Bus Connector
C128 Expansion Bus
Available at the Commodore 128.
(At the computer)
44 PIN FEMALE EDGE at the computer.
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 |