First VAX-11/730 VMS Boot! (was: Re: VAX-11/730 %BOOT-F-Unexpected Machine Check)
Mark J. Blair
nf6x at nf6x.net
Fri Jun 12 01:46:32 CDT 2015
On Jun 11, 2015, at 23:25 , Paul Anderson <useddec at gmail.com> wrote:
Thanks! I was pretty surprised when the boot messages started coming out on the DECwriter III!
On Jun 11, 2015, at 23:28 , Ethan Dicks <ethan.dicks at gmail.com> wrote:
> Back in the day, we ran VMS 5.0 on our 11/730, because we needed a
> machine to link our product against 5.0 to support our customers on
> the same version. I also ran Ultrix 1.1 at an earlier time on the
> same hardware. ISTR both Ultrix 1.1 and VMS 5.0 fit just fine on the
Thanks for the data point. I'm hoping that I'll find good stuff on that RL02 pack that's claiming to contain "VMS53SYS".
> The other thing I did, for my own sanity, was I reordered the files on
> the console TU58 into the precise order they were requested. Boot
> time was on the order of 5 minutes, down from 25 minutes. Best I
> could tell, the console 8085 cached the directory block(s), so the
> tape practically streamed as it read file after file. Without all
> that seeking, it was down to the serial speed the tape and console
> were set to (38.4kbps?)
38.4kbps is correct. The fellow from whom I bought the VAX mentioned that the included tapes were "load optimized", but I haven't successfully read one without errors so far. Not that it matters with tu58em, but the images I'm using also appear to have been load-optimized, based on the order of files on their RT11 filesystems. Wow, 25 minutes of tape thrashing must have been unbearable!
Mark J. Blair, NF6X <nf6x at nf6x.net>
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