7 Jun
2006
7 Jun
'06
12:02 p.m.
On Mon, 5 Jun 2006, Tony Duell wrote:
> Sad - I have only the infos for ITT3030 at
> http://oldcomputers.dyndns.org/public/pub/rechner/sel/itt3030/info.html
That's an entire different beast ;-) I have several of these machines
(complete with hard disks, external drives etc.) and a "small amount" of
spare parts in several banana boxes.
BTW there's where I found other ITT stuff like 3287 boards and course
materials.
FWIW, I have an ITT 3210 display terminal engineering
manual (including
schematics). This is a fairly dumb RS232 terminal (it does support cursor
positioning, but not much more) built from TTL and MOS shift registers as
the display memory
Well, *this* one is too dumb for me... The bigger ones from the 328x
series were generally connected to a terminal controller (3282) which in
turn provided terminal lines to an IBM 360/370 host. These terminals are
based on the i8008 (and i8080 in later models), I have several boards from
those terminals, some of them contain ICs that I cannod identify (see the
thread for the AMI 1315-P-2 and Synertek 2650-P-01). The AMI part seems to
be a keyboard controller with keycode repeat etc. The Synertek part *may*
be a custom chip, it's definitely *not* a Signetics 2650 as the idiot chip
collectors would tell you. BTW I couldn't trace a ground line to this IC,
only -5V and +5V, eight data(?) lines coming from DS8833 transceivers and
other signals I haven't traced out yet.
The display board from these terminals still have MOS shift registers, and
an unknown (again!) IC from NatSemi called 1409.
I hope schematics would tell me what all these rare ICs are.
Christian