chris-uk
Experienced Member
I've added the few listings I have found so far to:-
http://www.cmas-net.org.uk/vintage/Newbear-77-68/Programs/
Chris
http://www.cmas-net.org.uk/vintage/Newbear-77-68/Programs/
Chris
...could the owner of the docs provide me with the 32K DRAM design note...
The 77-68 motherboard we have with only a 4k ram board and home-brewed board with rom/ram, pio, acia only uses a 5v supply.
( See: http://www.cmas-net.org.uk/vintage/Newbear-77-68/Pictures/Sys3-77-68-Neat-CPU-Board-view-2.jpg )
It's only some of the other boards which need other voltages.
.
If you wanted to build a `modern` one, a small computer (such as Raspberry PI) with SIMH could be a start point - the SWTP emulation could be modified/configured to look more like a 77-68
It rather depends on if your interest is in building hardware or `playing` with software
It's great to see so much enthusiasm for the Newbear 77-68. My father was Tim Moore and he sadly passed away in August 2022. He was a true pioneer with the development of computers. We donated some of the manuscripts to the museum of computing history during the Covid lockdowns.Interesting to find a conversation about this...
One of my brothers worked for Newbear in the 77/68 team (under Tim Moore) when they were based in Newbury ( Berks, UK ) and my other brother still has two of them.
He orignally had an old ASR33 teletype as its console terminal.
He still keeps one in working condition and regularly plays some games on it... though he uses a terminal emulator on a PC as the console nowadays.
He has also recorded all of his program tapes via sound recorder on the pc and plays them back from that to load the programs - much faster than
an old cassette recorder.
I know he has some literature, so I'll ask him about it.
That is a nice looking set of early boards your father built, fascinated by these systems, which came out as I started working 77/78. Interested by the Newbury connection, I must have driven past the Bartholomew Road office in Newbury for 13 years and and never worked outIt's great to see so much enthusiasm for the Newbear 77-68. My father was Tim Moore and he sadly passed away in August 2022. He was a true pioneer with the development of computers. We donated some of the manuscripts to the museum of computing history during the Covid lockdowns.