UNIBUS M9312 ROMS

[Mike Ross]

On Thu, Jun 9, 2016 at 12:27 PM, John Robertson <jrr at flippers.com> wrote:
> On 06/08/2016 3:46 PM, Jay West wrote:
>>
>> I wrote...
>> On Thu, Jun 9, 2016 at 6:34 AM, Jay West <jwest at classiccmp.org> wrote:
>>>
>>> 23-E39A9 is still lost to time, afaik. TMSCP - TU81
>>
>> To which mike replied...
>> ----
>> Could that not be reverse-engineered from the boot code in e.g. Emulex
>> UC17 ROMs? They could do TMSCP...
>>
>> BTW what PROM blower would folks recommend for creating/imaging M9312
>> ROMs?
>> ----
>> Possibly, but some (me) are sticklers for original code. Plus, I am not
>> sure, but I think someone said this rom did something really bizarre to fit
>> in the available rom space - self modifying code or something...
>>
>
> No way the M9312 can self modify, it is a burn once PROM -

I kinda assumed it was a case of copying itself to RAM and
self-modifying as it runs there - if it ever happened.

Mike

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