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NEC PC-8001 RGB cable

videofx

Member
Joined
Dec 29, 2013
Messages
22
Location
Illinois, USA
Hello Everyone,

I got a complete NEC PC-8001 system but the manuals don't include pinouts for the 8 Pin DIN RGB cable. My system included a cable with 8 pin DIN to 9 pin DB9.

So I plugged it in to my CGA to VGA converter and monitor displays NO SIGNAL

Anyone know the pinouts and how to get this cable working?

Thanks!
 
Joined
May 24, 2018
Messages
22
Location
Alberta
I built an adapter for my PC-8801mkII last year. It is effectively a DIN connector which pipes the colour channels into some 150Ω resistors (to step the voltages down from TTL to something closer to VGA Vpp).

Although I haven't tested it on a PC-8001, I think it should work based on the pinout that was just linked.

You might have an additional challenge in finding a monitor that supports the slower (i.e. not-31kHz) hsync.

I don't know what the 8001 specifically wants for horizontal sync, but this works fine with my 8801mkII in 24kHz "V1(H)" mode and a Fujitsu FM-7. I'm guessing you're also going to be 24kHz, or 15kHz in the worst case.

24kHz monitors are not uncommon but not exactly common either; I use an NEC 1970NX LCD and it seems to work but other people have had more luck using a scandoubler like the OSSC. For 15kHz, basically find something an Amiga can support.

Hope that helps! I have eyed those nice PC-8001s many times on the auction sites.
 
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