Master System Card

From HwB

Available at Sega Master System and SG-1000.

Also used for MyCard ??

Pinout

 35            1
  34          2
+---------------+
|| | | | | | | ||
| | | | | | | | |
|               |
|               |
Pin Dir Name Description
1 Arrowr.png +5V Power +5V
2  ? Arrowr.png /WR Write
3  ? /MREQ Memory Request
4  ? Arrowr.png /RD Read
5  ? /EXM1 Memory 8000-BFFF
6 Arrowr.png A14 Address bit14
7 Arrowr.png A13 Address bit13
8 Arrowr.png A8 Address bit8
9 Arrowr.png A9 Address bit9
10 Arrowr.png A11 Address bit11
11  ? /EXM2 Memory 0000-7FFF
12 Arrowr.png A10 Address bit10
13  ? /CE Cartridge Output Enable
14 Arrowlr.png D7 Data bit7
15 Arrowlr.png D6 Data bit6
16 Arrowlr.png D5 Data bit5
17 Arrowlr.png D4 Data bit4
18 Arrowlr.png D3 Data bit3
19 Arrow.png GND Ground
20 Arrow.png GND Ground
21 Arrow.png GND Ground
22 Arrowlr.png D2 Data bit2
23 Arrowlr.png D1 Data bit1
24 Arrowlr.png D0 Data bit0
25 Arrowr.png A0 Address bit0
26 Arrowr.png A1 Address bit1
27 Arrowr.png A2 Address bit2
28 Arrowr.png A3 Address bit3
29 Arrowr.png A4 Address bit4
30 Arrowr.png A5 Address bit5
31 Arrowr.png A6 Address bit6
32 Arrowr.png A7 Address bit7
33 Arrowr.png A12 Address bit12
34  ? CONT  ?
35 Arrowr.png +5V Power +5V

Note: Direction is Console relative Cartridge

Compatibility

Sega Master System II doesn't have this card slot. Some old card games were converted into cartridge games.

Capacity is 256Kb (32KB).

Sources