8-bit, full capacity
On schematic is chip
select logic. It is practically same as by 8-bit simple IDE interface.
But main advance here is that we work with CF card in memory mode,
where data transfer is 8-bit wide, so no capacity loss. Full
capacity of CF card is available, while interface remains simple. On
table below are other necessary connections between Speccy edge
connector and CF card.| ZX
pin, function |
B6
(D0) |
B7
(D1) |
B8
(D2) |
B11
(D3) |
B12
(D4) |
B10
(D5) |
B9
(D6) |
B3
(D7) |
A11
(A2) |
A22
(A6) |
A21
(A7) |
B18
(/RD) |
B19
(/WR) |
| CF
pin |
21 |
22 |
23 |
2 |
3 |
4 |
5 |
6 |
20
(A0) |
19
(A1) |
18
(A2) |
9 |
36 |
| ZX
pin, function |
A6
GND |
A6 GND | A6 GND | A6 GND | A6 GND | A6 GND | A7 GND | A7 GND | A7 GND | A7 GND | A7 GND | A7 GND | |
| CF
pin |
1 |
8 |
10 |
11 |
12 |
14 |
15 |
16 |
17 |
39 |
41 |
50 |
|
| ZX
pin, function |
A3
VCC |
A3 VCC | A3 VCC | A3 VCC | A3 VCC | A3 VCC | |||||||
| CF pin | 13 |
32 |
34 |
35 |
38 |
44 |