Any interest in "newer" hardware, software?

Brent Hilpert bhilpert at
Tue Jul 28 23:33:27 CDT 2020

On 2020-Jul-28, at 6:40 PM, Jay Jaeger via cctech wrote:

> On 7/28/2020 1:43 PM, Brent Hilpert via cctech wrote:
>> Per the OP's machine, the early HP21xx machines were based on CTµL, for which the main supply is +4.5V.
>> DTL and TTL chips in these machines ran off that 4.5 supply.
> The DTL I referred to in my posting are in a third-party (IOMEC) disk
> controller, not the HP 2114 CPU.

Oh, I take it you mean in a separate chassis with it's own power supply then.
(I thought you were referring to the interface boards in the CPU chassis).

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