[vcf-midatlantic] Received H11-a shipping mess!

Systems Glitch systems.glitch at gmail.com
Wed Feb 10 20:59:55 EST 2016

> It’s a two-switch front panel with a 3rd toggle switch connected to two posts on the power supply board 

If it's like a LSI system, it's probably for the Line Time Clock (LTC).

> The CPU has 5 40-pin chips (two purple ceramic and three PDIP). Supposedly the H11 has a monitor PROM or something like it, but I don’t see anything like a PROM on the board. Guess I have to wait until I get it running!

Sounds like the LSI-11 chipset (based on the WD16 multi-package CPU). If so, it's got ODT microcoded right into the processor. You'll still need some working RAM and a SLU at the typical address for it, though. Do you know if it's just a rebranded DEC board?

> Is there anything else I should know about the H11 while bringing it up?

>From what I know about the H11, I believe some of their cards are just DEC boards (CPU, possibly some of the RAM options). Can you post pictures of your boards for us to identify?


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