VAX 11/730 quickie

[Mike Ross]

Well I haven't figured out exactly what the problem was but I'm
embarrassed to report it was indeed serial comms finger trouble. I
could have sworn that VT220 was fine and the cable wired correctly...
but to cover all bases I tried it with a USB serial port on the Mac
that sits in the lab.

It worked.

First time.

CONV011

Bugger me.

http://www.corestore.org/730cons.png

OK next is console tape... I have around 100 TU58 tapes. On close
examination the collection contained ONE console tape... for an 11/750
of course! So I'll be reaching for an emulator. Looking back at a long
thread on vintage-computers last year it appears that tu58em had
timing issues and was unusable on 11/730 but is now patched and
working correctly... watch this space!

Thanks for all the pointers.

Mike

On Sun, Feb 21, 2016 at 1:09 PM, js at cimmeri.com <js at cimmeri.com> wrote:
> On 2/20/2016 7:03 PM, Mike Ross wrote:
>>
>> I might just try all switches *closed* on the basis that maybe it was
>> wired wrong but... no doesn't make sense; the system would have been
>> operational when decommissioned; the switch settings as I received it
>> must be valid...
>
>
> Make sure the switches are actually working.  Often, they're not.
>
> - J.
>
>



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