Re: H7874 power supply

[Paul Koning via cctalk]

> On Mar 30, 2020, at 10:17 AM, Robert Armstrong via cctalk 
> <cctalk@classiccmp.org> wrote:
> 
>> Looks like for this enclosure an ATX supply could well work.
>> For my VAX my notes say it didn't.
> 
>  A VAX would certainly be harder.  You'd have to kludge up the ACOK and DCOK 
> signals for one thing, which I don't think the R400x uses.

Thise signals don't seem like a problem: just hardwire them to the desired 
logic level.  PDP-11s need a real functioning DCOK signal iff you want to do 
power fail interrupt handling, otherwise they don't.  Do VAXen have power fail 
interrupt?  If yes, does anyone actually use it?

        paul