29 Sep
2014
29 Sep
'14
7:38 a.m.
Wow, cool, thanks for posting those.
That CPU really is built mostly out of discrete components which is
something you don't see everyday, especially on this vintage of machine..
Not a single Am2901 in sight! What are all the larger ICs on the WFE and
WFF boards? ROMs? They look like Signetics parts? Maybe there's some 74181s
in there? Knowing it's a 32-bit CPU, that block of 8 large ICs on the WFE
board looks suspicious... Sorry if silly question, I can't get the pics on
Google Plus to zoom.
Best,
Sean
On Mon, Sep 29, 2014 at 12:51 AM, Josh Dersch <derschjo at gmail.com> wrote:
On 9/28/2014 4:10 PM, Al Kossow wrote:
On 9/28/14 2:20 PM, Josh Dersch wrote:
Thanks.
Managed to get the CPU cabinet open from the inside; with the top cover
off it's possible to remove the tape drive assembly. Afterwards, the lock
mechanism is exposed though a bit tricky to get to. Took some pictures of
the CPU/Memory boards, I'll do the I/O tomorrow (lots of cables to sort
through.) Board pictures have been uploaded to the album, they turned out
pretty well for cellphone shots without any sort of stabilization; most of
the IC labels are readable...
- Josh
Any idea what density the tapes are?
Should be 60mb