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kcsl
August 22nd, 2009, 08:10 AM
I've managed to find a VT100 keyboard (no VDU just the keyboard) but require some technical data for it.

Opened it up and figured out the connections to the 3 pin 1/4 inch jack on the end of the black curly cable, but when I power it up the on-line LED lights and it just sits there. I've put a scope on the data line but it's not sending anything.

Does anybody have any technical data on how this beast works ?

Theres always a chance that it's faulty of course, but it looks in good condition and a quick poke around inside shows no burn marks and the PSU section is working ok.

Many thanks,
Joe

pontus
August 22nd, 2009, 12:39 PM
what have you hooked it up to?

cosam
August 22nd, 2009, 12:52 PM
What do you need to know? The technical manual is available on Bitsavers (http://www.bitsavers.org/).

Lou - N2MIY
August 22nd, 2009, 05:21 PM
Specifically, this manual is excellent: http://www.bitsavers.org/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf

I have found it an invaluable resource (along with the FMPS) for the three VT100s that I have fixed. The keyboard portion starts on page 4-30.

Lou

kcsl
August 23rd, 2009, 11:51 PM
Specifically, this manual is excellent: http://www.bitsavers.org/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf

I have found it an invaluable resource (along with the FMPS) for the three VT100s that I have fixed. The keyboard portion starts on page 4-30.

Lou

That's perfect, thankyou.

It's going to be hooked up to a home made computer (not a PC) and whilst my beast has an extended Hex keypad, it's in need or a "real" keyboard. I found this VT100 (keyboard only) on Ebay and it seemed too good to miss.
Once I figure out how it works I can program a PIC to act as an interface to it. I could have used a standard PC keyboard, but wheres the fun (or style) in that.

Once again, many thanks.

Joe