CDTV Memory Card

From HwB

Pinout

          1111111111222222222233333333334
 1234567890123456789012345678901234567890
+----------------------------------------+
|OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO|
+----------------------------------------+

40 PIN ??? CONNECTOR at the computer.

Pin	Name	Description
1	D0	Data Bus 0
2	D1	Data Bus 1
3	D2	Data Bus 2
4	D3	Data Bus 3
5	D4	Data Bus 4
6	D5	Data Bus 5
7	D6	Data Bus 6
8	D7	Data Bus 7
9	D8	Data Bus 8
10	D9	Data Bus 9
11	D10	Data Bus 10
12	D11	Data Bus 11
13	D12	Data Bus 12
14	D13	Data Bus 13
15	D14	Data Bus 14
16	D15	Data Bus 15
17	A1	Address Bus 1
18	A2	Address Bus 2
19	A3	Address Bus 3
20	A4	Address Bus 4
21	A5	Address Bus 5
22	A6	Address Bus 6
23	A7	Address Bus 7
24	A8	Address Bus 8
25	A9	Address Bus 9
26	A10	Address Bus 10
27	A11	Address Bus 11
28	A12	Address Bus 12
29	A13	Address Bus 13
30	A14	Address Bus 14
31	A15	Address Bus 15
32	A16	Address Bus 16
33	A17	Address Bus 17
34	R/W	Read/Write (High=Read)
35	/CSMCOD	Chip Select Odd Bytes
36	/CSMCEN	Chip Select Even Bytes
37	VCC	+5 Volts DC
38	GND	Ground
39	A18	Address Bus 18 (Short J16 to connect A18 to processor bus)
40	A19	Address Bus 19 (Short J17 to connect A19 to processor bus)

Note: Address space=$E00000-$E7FFFF

Contributions

Joakim Ögren

Sources

Darren Ewaniuk's CDTV Technical Information