CDTV Memory Card connector pinout

#Computer#Buses and Slots

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PinNameDescription
1D0Data Bus 0
2D1Data Bus 1
3D2Data Bus 2
4D3Data Bus 3
5D4Data Bus 4
6D5Data Bus 5
7D6Data Bus 6
8D7Data Bus 7
9D8Data Bus 8
10D9Data Bus 9
11D10Data Bus 10
12D11Data Bus 11
13D12Data Bus 12
14D13Data Bus 13
15D14Data Bus 14
16D15Data Bus 15
17A1Address Bus 1
18A2Address Bus 2
19A3Address Bus 3
20A4Address Bus 4
21A5Address Bus 5
22A6Address Bus 6
23A7Address Bus 7
24A8Address Bus 8
25A9Address Bus 9
26A10Address Bus 10
27A11Address Bus 11
28A12Address Bus 12
29A13Address Bus 13
30A14Address Bus 14
31A15Address Bus 15
32A16Address Bus 16
33A17Address Bus 17
34R/WRead/Write (High=Read)
35/CSMCODChip Select Odd Bytes
36/CSMCENChip Select Even Bytes
37VCC+5 Volts DC
38GNDGround
39A18Address Bus 18 (Short J16 to connect A18 to processor bus)
40A19Address Bus 19 (Short J17 to connect A19 to processor bus)

Note: Address space=$E00000-$E7FFFF

CDTV Expansion Slot connector

Commodore 64 / 128 User I/O pinout