On 7/29/2020 4:47 AM, ED SHARPE via cctalk wrote:
> RE iomec drive and controller- SMECC has manuals for this subsystem and
> diags and drivers for it.Wen things get back to normal we will be able to
> accesses themshould you need any info. We are also looking for a 2114!
> and a
On 7/28/2020 11:33 PM, Brent Hilpert via cctalk wrote:
>
> On 2020-Jul-28, at 6:40 PM, Jay Jaeger via cctech wrote:
>
>> On 7/28/2020 1:43 PM, Brent Hilpert via cctech wrote:
>>>
>>> Per the OP's machine, the early HP21xx machines were based on CTµL, for
>>> which the main supply is +4.5V.
>>>
RE iomec drive and controller- SMECC has manuals for this subsystem and
diags and drivers for it.Wen things get back to normal we will be able to
accesses themshould you need any info. We are also looking for a 2114! and
a 2115! We have the 2116 (drop us a line offlist) Ed#
On 7/28/2020 1:43 PM, Brent Hilpert via cctech wrote:
>
> Per the OP's machine, the early HP21xx machines were based on CTµL, for which
> the main supply is +4.5V.
> DTL and TTL chips in these machines ran off that 4.5 supply.
>
The DTL I referred to in my posting are in a third-party (IOMEC)
On 2020-Jul-28, at 6:40 PM, Jay Jaeger via cctech wrote:
> On 7/28/2020 1:43 PM, Brent Hilpert via cctech wrote:
>>
>> Per the OP's machine, the early HP21xx machines were based on CTµL, for
>> which the main supply is +4.5V.
>> DTL and TTL chips in these machines ran off that 4.5 supply.
>>
On 2020-Jul-28, at 4:48 PM, Carlos E Murillo-Sanchez via cctalk wrote:
>
> So, what would two chips marked
>
> F U6A7709393
> 7043
F : Fairchild
U : monolithic device (as opposed to e.g. hybrid)
6A : package, DIP (6), 14-pin (A)
7709: circuit/function code. As Jay suggests, a 709 op
Jay Jaeger via cctalk wrote:
On 7/28/2020 6:48 PM, Carlos E Murillo-Sanchez via cctalk wrote:
So, what would two chips marked
F U6A7709393
7043
and
F 7306
7-6987
be?
Carlos.
U6A seems likely to me to be referring to a linear chip, rather than a
digital one, though the 6
On 7/28/2020 6:48 PM, Carlos E Murillo-Sanchez via cctalk wrote:
>
> So, what would two chips marked
>
> F U6A7709393
> 7043
>
> and
>
> F 7306
> 7-6987
>
> be?
>
> Carlos.
>
U6A seems likely to me to be referring to a linear chip, rather than a
digital one, though the 6 between
Brent Hilpert via cctalk wrote:
Fairchild part numbers trivia following.
On 2020-Jul-28, at 7:35 AM, Jay Jaeger via cctalk wrote:
My DTL chips have markings like:
DT uL93659 (Chip type 936)
F 7016
DT uL909759 (Chip type 9097)
F 7013
(I expect 7016 and 7013 are date codes. Not sure
On 7/28/2020 9:11 AM, Paul Koning via cctalk wrote:
On Jul 28, 2020, at 10:35 AM, Jay Jaeger via cctalk
wrote:
On 7/24/2020 1:36 AM, Boris Gimbarzevsky via cctalk wrote:
found a box of old Univac cards which appear to be DTL with individual
transistors and then go on to having DTL IC's
Fairchild part numbers trivia following.
On 2020-Jul-28, at 7:35 AM, Jay Jaeger via cctalk wrote:
> My DTL chips have markings like:
>
> DT uL93659 (Chip type 936)
> F 7016
>
> DT uL909759 (Chip type 9097)
> F 7013
>
> (I expect 7016 and 7013 are date codes. Not sure what the "59" is
> On Jul 28, 2020, at 10:35 AM, Jay Jaeger via cctalk
> wrote:
>
> On 7/24/2020 1:36 AM, Boris Gimbarzevsky via cctalk wrote:
>
>> found a box of old Univac cards which appear to be DTL with individual
>> transistors and then go on to having DTL IC's as well as some old IBM
>> cards. Used
On 7/24/2020 1:36 AM, Boris Gimbarzevsky via cctalk wrote:
> found a box of old Univac cards which appear to be DTL with individual
> transistors and then go on to having DTL IC's as well as some old IBM
> cards. Used to pull transistors and diodes off these to build my own
> circuits 50 years
m across the border.
-mike
-Original Message-
From: cctalk On
Behalf Of Boris Gimbarzevsky via cctalk
Sent: Thursday, July 23, 2020 11:36 PM
To: cctalk@classiccmp.org
Subject: Any interest in "newer" hardware, software?
Have been going through my shop and storage room
t
he border.
-mike
-Original Message-
From: cctalk On Behalf Of Boris Gimbarzevsky
via cctalk
Sent: Thursday, July 23, 2020 11:36 PM
To: cctalk@classiccmp.org
Subject: Any interest in "newer" hardware, software?
Have been going through my shop and storage room trying to s
> -Original Message-
> From: cctalk On Behalf Of Liam Proven via
> cctalk
> Sent: 24 July 2020 12:38
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: Any interest in "newer" hardware, software?
>
> On Fri, 24 Jul 2020 at
On Fri, 24 Jul 2020 at 08:36, Boris Gimbarzevsky via cctalk
wrote:
>
> Was about to toss a 1987 box containing DOS 3.3 but then figured
> someone might want it. Have a couple of XT systems kicking around
> somewhere
A chap on the FB Vintage Computing group was seriously asking if an
original
Have been going through my shop and storage room trying to see what
can get rid of and wasn't aware of how much old electronics and
computers have accumulated over last 50 years. Should note that this
process has been at insistance of my wife as a lot of these boxes
just got moved whenever I
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