25 Mar
2017
25 Mar
'17
9:26 p.m.
I'm trying to track down ROM images from AT&T 3B2 expansion cards.
I've started with the EPORTS serial card, which I have. What I'd love
to find is the ROM from the NI Ethernet card.
Not all ROMs were socketed. Freqently they were soldered, so I know
that getting these probably won't be easy. If I had an NI card of my
own I'd desolder the ROMs, but alas, I do not.
If you have these ROMs, are willing to image them, or -- and this is a
real long shot -- if you're willing to let me borrow a card for a
while, I'd greatly appreciate hearing from you.
Best Wishes,
-Seth
--
Seth Morabito
web at loomcom.com
26 Mar
26 Mar
3:07 a.m.
I am looking for ROM dumps for the NI card as well. I've dumped ROMs
from most other cards. I've placed there
temporarily here:
https://www.retrotronics.org/tmp/3b2_romdumps.zip [1]
I've disassembled the ones I have. They all appear to be based on the
same CIO reference firmware, mostly compiled with a C compiler, share
75% of code between them, do not support PIO access other than to return
the card id code and accept a slot number, and communicate with the host
OS through in/out FIFOs at an address in memory based on the card id.
-Alan
On 2017-03-26 00:26, Seth Morabito via cctalk wrote:
I'm trying to track down ROM images from AT&T
3B2 expansion cards.
I've started with the EPORTS serial card, which I have. What I'd love
to find is the ROM from the NI Ethernet card.
Not all ROMs were socketed. Freqently they were soldered, so I know
that getting these probably won't be easy. If I had an NI card of my
own I'd desolder the ROMs, but alas, I do not.
If you have these ROMs, are willing to image them, or -- and this is a
real long shot -- if you're willing to let me borrow a card for a
while, I'd greatly appreciate hearing from you.
Best Wishes,
-Seth
Links:
------
[1] https://www.retrotronics.org/tmp/3b2_romdumps.zip
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