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Well, tube radios with more tubes were better so why wouldn't transistor radios?
Well, tube radios with more tubes were better so why wouldn't transistor radios?
Wonder how many you'd need to replicate even a 6502 or an Z80? It would be doable, no?
Wonder how many you'd need to replicate even a 6502 or an Z80? It would be doable, no?
Wonder how many you'd need to replicate even a 6502 or an Z80? It would be doable, no?
I believe so from reading about old tube computers that I believe had numbers of tubes in the range of those old CPUs.
https://en.wikipedia.org/wiki/List_of_vacuum-tube_computers
Compare to:
https://en.wikipedia.org/wiki/Transistor_count
Z80=8,500, 6502=4,528 and on the computers lists I see some over 5,000 tubes and the 1956 RCA BIZMAC used over 25,000 tubes. https://en.wikipedia.org/wiki/BIZMAC
CP/M on a tube computer would be sorta cool. Your average tube radio used 5 tubes but I remember some high end stuff that used 14 tubes and I believe there were some with even more tubes.
>Wonder how many you'd need to replicate even a 6502 or an Z80? It would be doable, no?
I believe so from reading about old tube computers that I believe had numbers of tubes in the range of those old CPUs.
https://en.wikipedia.org/wiki/List_of_vacuum-tube_computers
Compare to:
https://en.wikipedia.org/wiki/Transistor_count
Z80=8,500, 6502=4,528
and on the computers lists I see some over 5,000 tubes and the 1956 RCA BIZMAC used over 25,000 tubes.
https://en.wikipedia.org/wiki/BIZMAC
CP/M on a tube computer would be sorta cool.
Your average tube radio used 5 tubes but I remember some high end stuff that used 14 tubes and I believe there were some with even more tubes.
6502 Sim http://www.visual6502.org/
From discrete TTL chips https://c74project.com/
A tube version should be feasible. One with Nuvistors would be sweet.
With roughly 5000 transistors being replaced by 2500 dual triodes at 6 Volts, taking about 1 Watt of power each, we're looking at abt. 2.5 kW of power consumption just for the filaments. That's a sweet heater in winter time.
One 12AX7 with a diameter of 20 mm plus say, 10mm clearance takes up 900mm². If I didn't use the wrong calculator on the web, 2500 of them wold take up 2.25 m² That would fit on a base, e.g. 1 x 2.5 m with some room to spare for interface connectors to the relay based RAM and the cuneiform ROM.
Power that shit with two independent arrays of lead acid batteries. Use Knife switches for input and Flak Beamers for output.
6502 Sim
http://www.visual6502.org/
From discrete TTL chips
https://c74project.com/
A tube version should be feasible. One with Nuvistors would be sweet.
With roughly 5000 transistors being replaced by 2500 dual triodes at 6 Volts, taking about 1 Watt of power each, we're looking at abt. 2.5 kW of power consumption just for the filaments. That's a sweet heater in winter time.
One 12AX7 with a diameter of 20 mm plus say, 10mm clearance takes up 900mm².
If I didn't use the wrong calculator on the web, 2500 of them wold take up 2.25 m²
That would fit on a base, e.g. 1 x 2.5 m with some room to spare for interface connectors to the relay based RAM and the cuneiform ROM.
Power that shit with two independent arrays of lead acid batteries.
Use Knife switches for input and Flak Beamers for output.
(post is archived)