| <-> |
D2 |
1 |
U
Z80 PIO
|
40 |
D3 |
<-> |
| <-> |
D7 |
2 |
39 |
D4 |
<-> |
| <-> |
D6 |
3 |
38 |
D5 |
<-> |
| --> |
!CE |
4 |
37 |
!M1 |
<-- |
| --> |
C/!D |
5 |
36 |
!IORQ |
<-- |
| --> |
B/!A |
6 |
35 |
!RD |
<-- |
| <-> |
PA7 |
7 |
34 |
PB7 |
<-> |
| <-> |
PA6 |
8 |
33 |
PB6 |
<-> |
| <-> |
PA5 |
9 |
32 |
PB5 |
<-> |
| <-> |
PA4 |
10 |
31 |
PB4 |
<-> |
| |
GND |
11 |
30 |
PB3 |
<-> |
| <-> |
PA3 |
12 |
29 |
PB2 |
<-> |
| <-> |
PA2 |
13 |
28 |
PB1 |
<-> |
| <-> |
PA1 |
14 |
27 |
PB0 |
<-> |
| <-> |
PA0 |
15 |
26 |
VCC |
|
| -- |
!A_STB |
16 |
25 |
CLK |
<-- |
| -- |
!B_STB |
17 |
24 |
INT_EN_IN |
<-- |
| -- |
A_RDY |
18 |
23 |
!INT |
--> |
| <-> |
D0 |
19 |
22 |
INT_EN_OUT |
--> |
| <-> |
D1 |
20 |
21 |
B_RDY |
--> |
|