|
C64 to ISA Bus |
|
|
| C64-Pin |
C64-Desc |
ISA-Pin |
ISA-Desc |
|
| - |
NO NEED |
A1 |
-I/O CH
CK |
|
| 14 |
D7 |
A2 |
SD7 |
|
| 15 |
D6 |
A3 |
SD6 |
|
| 16 |
D5 |
A4 |
SD5 |
|
| 17 |
D4 |
A5 |
SD4 |
|
| 18 |
D3 |
A6 |
SD3 |
|
| 19 |
D2 |
A7 |
SD2 |
|
| 20 |
D1 |
A8 |
SD1 |
|
| 21 |
D0 |
A9 |
SD0 |
|
| - |
NO NEED |
A10 |
-I/O CH RDY |
|
| 1 , 22, A, Z |
GND |
A11 |
AEN |
|
| 1 , 22, A, Z |
GND |
A12 |
SA19 |
|
| 1 , 22, A, Z |
GND |
A13 |
SA18 |
|
| 1 , 22, A, Z |
GND |
A14 |
SA17 |
|
| 1 , 22, A, Z |
GND |
A15 |
SA16 |
|
| 1 , 22, A, Z |
GND |
A16 |
SA15 |
|
| 1 , 22, A, Z |
GND |
A17 |
SA14 |
|
| 1 , 22, A, Z |
GND |
A18 |
SA13 |
|
| 1 , 22, A, Z |
GND |
A19 |
SA12 |
|
| 1 , 22, A, Z |
GND |
A20 |
SA11 |
|
| 1 , 22, A, Z |
GND |
A21 |
SA10 |
|
| 2 & 3 |
5V |
A22 |
SA9 |
|
| R |
A7 (LINK) + |
A23 |
SA8 |
|
| R |
A7 (LINK) - |
A24 |
SA7 |
|
| S |
A6 |
A25 |
SA6 |
|
| T |
A5 |
A26 |
SA5 |
|
| U |
A4 |
A27 |
SA4 |
|
| V |
A3 |
A28 |
SA3 |
|
| W |
A2 |
A29 |
SA2 |
|
| X |
A1 |
A30 |
SA1 |
|
| Y |
A0 |
A31 |
SA0 |
|
| 2 & 3 |
5V |
C1 |
SBHE |
|
| - |
NO PIN |
C2 |
LA23 |
|
| - |
NO PIN |
C3 |
LA22 |
|
| - |
NO PIN |
C4 |
LA21 |
|
| - |
NO PIN |
C5 |
LA20 |
|
| - |
NO PIN |
C6 |
LA19 |
|
| - |
NO PIN |
C7 |
LA18 |
|
| - |
NO PIN |
C8 |
LA17 |
|
| - |
NO PIN |
C9 |
-MEMR |
|
| - |
NO PIN |
C10 |
-MEMW |
|
| 1 , 22, A, Z |
GND |
C11 |
SD8 |
|
| 1 , 22, A, Z |
GND |
C12 |
SD9 |
|
| 1 , 22, A, Z |
GND |
C13 |
SD10 |
|
| 1 , 22, A, Z |
GND |
C14 |
SD11 |
|
| 1 , 22, A, Z |
GND |
C15 |
SD12 |
|
| 1 , 22, A, Z |
GND |
C16 |
SD13 |
|
| 1 , 22, A, Z |
GND |
C17 |
SD14 |
|
| 1 , 22, A, Z |
GND |
C18 |
SD15 |
|
| |
|
|
|
|
| |
|
|
|
|
| 1 , 22, A, Z |
GND (74) 1,8,13,15 |
B1 |
Ground |
|
| C |
RESET (74) 11 |
B2 |
Reset Drive |
|
| 2 & 3 |
5V (74) 16 |
B3 |
+5Vdc |
|
| - |
NO NEED |
B4 |
IRQ9 |
|
| - |
NO PIN |
B5 |
-5Vdc |
|
| - |
NO PIN |
B6 |
DRQ2 |
|
| - |
NO PIN |
B7 |
-12Vdc |
|
| - |
NO PIN |
B8 |
0 WS |
|
| - |
NO PIN |
B9 |
+12Vdc |
|
| - |
NO NEED |
B10 |
Ground |
|
| - |
NO NEED |
B11 |
-SMEMW |
|
| - |
NO NEED |
B12 |
-SMEMR |
|
| 5 |
IOW (74) 2 |
B13 |
-IOW |
|
| 7 & 10 |
IOR (74) 3 |
B14 |
-IOR |
|
| - |
NO PIN |
B15 |
-DACK3 |
|
| - |
NO PIN |
B16 |
DRQ3 |
|
| - |
NO PIN |
B17 |
-DACK1 |
|
| - |
NO PIN |
B18 |
DRQ1 |
|
| - |
NO PIN |
B19 |
-Refesh |
|
| - |
NO PIN |
B20 |
CLK |
|
| - |
NO NEED |
B21 |
IRQ7 |
|
| - |
NO PIN |
B22 |
IRQ6 |
|
| - |
NO NEED |
B23 |
IRQ5 |
|
| - |
NO PIN |
B24 |
IRQ4 |
|
| - |
NO NEED |
B25 |
IRQ3 |
|
| - |
NO PIN |
B26 |
-DACK2 |
|
| - |
NO PIN |
B27 |
T/C |
|
| - |
NO PIN |
B28 |
BALE |
|
| - |
NO NEED |
B29 |
+5Vdc |
|
| - |
NO PIN |
B30 |
OSC |
|
| - |
NO NEED |
B31 |
Ground |
|
| - |
NO NEED |
D1 |
-MEM CS16 BIT |
|
| - |
NO NEED |
D2 |
-I/O CD16 BIT |
|
| - |
NO NEED |
D3 |
IRQ10 |
|
| - |
NO NEED |
D4 |
IRQ11 |
|
| - |
NO NEED |
D5 |
IRQ12 |
|
| - |
NO PIN |
D6 |
IRQ15 |
|
| - |
NO PIN |
D7 |
IRQ14 |
|
| - |
NO PIN |
D8 |
-DACK0 |
|
| - |
NO PIN |
D9 |
DRQ0 |
|
| - |
NO PIN |
D10 |
-DACK5 |
|
| - |
NO PIN |
D11 |
DRQ5 |
|
| - |
NO PIN |
D12 |
-DACK6 |
|
| - |
NO PIN |
D13 |
DRQ6 |
|
| - |
NO PIN |
D14 |
-DACK7 |
|
| - |
NO PIN |
D15 |
DRQ7 |
|
| - |
NO NEED |
D16 |
+5Vdc |
|
| - |
NO PIN |
D17 |
-Master |
|
| - |
NO NEED |
D18 |
Ground |
|
| C64 CARTRIDGE PORT PINS - THAT ARE NOT USED IN THIS PROJECT |
|
| 4,6,8,9,11-13 |
|
|
|
|
| B, D-P |
|
|
|
|
|
|
|
|
|
|
|
| ISA-CARD
PC = All RED text & numbers |
|
|
| (74) = refers to pins used on the 74HC139
CHIP |
|
| C64 = All Blue text
& numbers |
|
|
74HC139 |
|
| GND |
1
16 |
5v |
|
| 5 |
2
15 |
GND |
|
| 7 &
10 |
3
14 |
C & SW |
|
| B13 |
4
13 |
GND |
|
| B14 |
5
12 |
- |
|
| - |
6
11 |
B2 |
|
| - |
7
10 |
- |
|
| GND |
8
9 |
- |
|
|
|
|
|
|
| Note: the ISA Port
PINS SA7 & SA8 both have a 4.7k resisitor connected
to them. |
| And
they both connect to a LINK which connects to the C64 Cart
port Pin "R" |
|
| Refer
to the SCHEMATIC of NET64 for more
details |
|
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