[LispM] Further Developments

[Daniel Seagraves]

> On Sep 18, 2018, at 5:33 AM, Brad Parker <brad at heeltoe.com> wrote:
> 
> On 9/17/18 1:29 PM, Daniel Seagraves wrote:
>> I spun up a blog for posting the ongoing status of things; It’s at https://www.orinrin.land/lispm/ <https://www.orinrin.land/lispm/>
> Let me know if you want any kibitzing on  bringing up the CADR.  I don't know anything about the Lambda's, but I've booted CADR hardware many many times (not in it's original form, but I still think I can offer some guidance).
> 
> What cards do you have in the xbus chassis?  Do you have a disk controller card?  an i/o card?  memory?

I’m not sure how the box is organized. It looks like the nine slots on the right (facing into the box, including the terminator) are Unibus and the remainder are xbus, is that right?

I have 5 memory boards, one is marked bad, a TV, something marked “TEST 1” that goes to the disk ports, an unmarked board that I assume is the xbus master since it’s connected to the processor, and a unibus board marked IOB that has a bunch of stuff on it.

I also have a chaos transceiver and what I think is its wall wart but it’s in bad shape.

> have fun.  in theory wire wrap is gas tight.  the one cadr i saw in the wild was pretty corroded.

Yeah, this one was full of mud, and the (I guess it was bare and unpainted?) metal in the bus box is heavily rusted, but there’s only minor corrosion that I can see in the processor and the Mighty-Might looked brand new inside. It powered up without issue (at no load), regulators all within 0.01V, and even the fan sounded new. Those things are tough as nails, I tell you.

Right now my issue is that half the bus box fans are not working, they are in dire need of cleaning and the retaining clips have basically disintegrated, so they’re all going to have to be pulled, cleaned, lubed, and retaining clips replaced.

In the meantime, I’m trying to square away at least one good set of LMI power supplies; They fared far worse than the Mighty-Mite, despite being enclosed in a rack. (Did the CADR have sides and a back or was it always just wide open?)

-------------- next part --------------
An HTML attachment was scrubbed...
URL: </archives/lispm/attachments/20180918/62241b34/attachment.html>