[Simh] VAX 730 Console Tapes [was: VAX 8200]

[Johnny Billquist]

On 2017-03-17 03:26, Robert Armstrong wrote:
>> Johnny Billquist (bqt at softjar.se) wrote:
>> My only comment is that I normally never booted from the TU58.
>> Why would you do that, except at initial install, or to run diagnostics.
>
>   You're confusing the 730 with the 750.  On a 730 you didn't have any choice, assuming you're starting from power off.  The CPU microcode, CFE software, VMB, and pretty much everything else was stored on the TU58.

You are right. Or, not so much confusing as not remembering. I mostly 
remember the 11/750. Worked way more on that than on 11/730 machines.

>   The 750 was a different matter.  The microcode was in ROM, VMB was in the boot block on the disk, and you could live without the TU58.

Not really the VMB, but eventually you did get to VMB. The boot blocks 
were pretty simple on the 11/750, as far as I can remember.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol