| Pin | Name | Description |
|---|---|---|
| 1 | /CD | Card Detect |
| 2 | AUDIO_IN | Audio input |
| 3 | A19 | Address 19 |
| 4 | A16 | Address 16 |
| 5 | A15 | Address 15 |
| 6 | A12 | Address 12 |
| 7 | A7 | Address 7 |
| 8 | A6 | Address 6 |
| 9 | A5 | Address 5 |
| 10 | A4 | Address 4 |
| 11 | A3 | Address 3 |
| 12 | A2 | Address 2 |
| 13 | A1 | Address 1 |
| 14 | A0 | Address 0 |
| 15 | D0 | Data 0 |
| 16 | D1 | Data 1 |
| 17 | D2 | Data 2 |
| 18 | GND | Ground |
| 19 | D3 | Data 3 |
| 20 | D4 | Data 4 |
| 21 | D5 | Data 5 |
| 22 | D6 | Data 6 |
| 23 | D7 | Data 7 |
| 24 | /CE | Chip Select |
| 25 | A10 | Address 10 |
| 26 | /OE | Output Enable |
| 27 | A11 | Address 11 |
| 28 | A9 | Address 9 |
| 29 | A8 | Address 8 |
| 30 | A13 | Address 13 |
| 31 | A14 | Address 14 |
| 32 | A17 | Address 17 |
| 33 | A18 | Address 18 |
| 34 | R/W | Read/Write |
| 35 | /HSM | High Speed Mode |
| 36 | /RST | Reset |
| 37 | /IRQ2 | Interrupt Request 2 |
| 38 | +5V | +5 VDC |
Pin 1 is the short pin on the left (if the card is to inserted forwards)
Pin 38 is the long pin on the right.
/CD is tied to ground in the HuCard, so the console knows if a card is inserted.
A cartridge can send audio on AUDIO_IN, it will be output equally on both left and right channels.
/HSM controls the clock: High=7.15909 Mhz, Low=1.7897725 Mhz.
correct
incorrect