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Available on the PC Engine
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.

38 pins unspecified connector layout
38 pins unspecified connector
at the PC Engine
According to 1 reports in our database (0 positive and 0 negative) this pinout may be incorrect.

Is this pinout
Source(s) of this and additional information: Video Games FAQ (Part 3), Pinout by David Shadoff, from Hardware Book, http://wiki.pcengine.info/pmwiki.php?n=HuCard.HuCardPinout
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