Data General Nova 3/12 Power Supply drawings

Tommie — Sun, 07 Feb 2010 15:13:13 +0000

I have two Nova 3/12’s. One equipped with:

NOVA 3 CPU, PWRFAIL, PRLOAD, 256KW
NOVA 3 TRIPPLE OPT, MMPU, PAR, MUL/DIV, RTC
64KW Plessey, 128K SC, W PAR, 0-127
DGC NOVA CASSETTE I/O, $TTI/O, 9600 B, RTC
DISK CARTRIDGE CONTROL DGC NOVA, DKP, 4234, 6030
DGC NOVA CASSETTE I/O, $TTI/O, 9600 B, RTC

The other is an empty chassis, both with faulty power supplies. I contacted Bruce Ray of Wild Hare Computer Systems and Bruce provided me with Nova 3/12 Power Supply and backplane drawings. I still have to troubleshoot and repair the power supplies, but at least I now have the drawings and the tools.

Picked up a Nova 3/12 from my friend Bjarni

Tommie — Mon, 16 Nov 2009 17:21:55 +0000

A fellow Data General minicomputer collector offered me his Nova 3/12 a while back and today me and friend went to his place to pick up the Nova 3. Bjarni, as the friendly guy he is, also offered me to take his Model 4234, Diablo drive which I did. I now have a DG 19” rack, the Nova 3/12 CPU with:

NOVA 3 CPU, PWRFAIL, PRLOAD, 256KW
NOVA 3 TRIPPLE OPT, MMPU, PAR, MUL/DIV, RTC
64KW Plessey, 128K SC, W PAR, 0-127
DGC NOVA CASSETTE I/O, $TTI/O, 9600 B, RTC
DISK CARTRIDGE CONTROL DGC NOVA, DKP, 4234, 6030
DGC NOVA CASSETTE I/O, $TTI/O, 9600 B, RTC
A 4234 Diablo disk drive and a 6026 Vacuum Tape Transport

I believe the Diablo disk drive was part of the Nova 3/12 system since it has a disk controller installed for the Diablo drive.

The Soul of an Old Machine » PRLOAD

Data General Nova 3/12 Power Supply drawings

Picked up a Nova 3/12 from my friend Bjarni