PDP-11/45 RSTS/E boot problem

[Fritz Mueller]

> On Jan 5, 2019, at 12:58 PM, Fritz Mueller <fritzm at fritzm.org> wrote:
> 
> I did get some MACRO CRC-16 sub-routines coded up last night while waiting for various transfers, so I think I’ll go ahead and finish up the standalone CRC dumper utility today.
> 
> Lastly, a 5V-tolerant USB FIFO breakout board is supposed to show up in the mails today.  If that works out as simply as I hope to interface with a DR11-C, I should have a much better way to blast bits on and off the machine soon.

Okay, finished up the standalone CRC utility, and verified (to very long odds) byte identical contents between reading the physical pack on the machine and reading the downloaded pack under SIMH.  And that image doesn’t boot on real HW, but works under SIMH.

I’ll post the CRC utility code up on my '11/45 project blog (http://fritzm.github.io/category/pdp-11.html) when I do a write-up later tonight, in case anybody else is interested in it.

So, I’m left with something probably odd with my HW tripping up RSTS but not being caught by MAINDECs :-(  I think I’ll switch gears for a bit and work on the USB FIFO to DR11-C hack, since that will help make further experimentation much faster in general.

    cheers,
      --FritzM.