Does anyone have an H11 and need a H27 card? -spam

Bill Gunshannon bill.gunshannon at
Mon Dec 28 19:14:57 CST 2020

On 12/28/20 7:04 PM, Chris Zach via cctalk wrote:
>> All joking aside, I sure wish I had a complete H-11.  I have
>> PDP-11's but the H-11 was unique.
> They're around. I had one when I was little and it was ok but kind of 
> clunky. The box was odd, it only had 16 (maybe 18?) bits wired on the 
> backplane and the power supply was a linear rock if I remember right.

I imagine 16 bits.  It probably had an 11/02 processor just like
the TERAK.  18 and 22 came later.

> Still, it ran Rt11 pretty well. But an 11/23+ would give you the VM: ram 
> disk driver that allowed you to just copy the whole OS to memory, boot, 
> and run fast!.

I know it ran HT-11 which was supposed to be a custom RT-11.  Would it
run regular RT-11?  Was the H-27 fully RX01 compatible?


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