On 06/12/2017 10:23 PM, jim stephens via cctalk wrote:
> Things odd about the board. No 1488 / 1489 or any other transmit /
> receiver chips. No clock circuit. Was there an appropriate
> frequency crystal or clock on the interface to divide to something
> for the 1602 uart clock?
>
> I see
On 6/12/2017 5:08 PM, Win Heagy via cctalk wrote:
Does anyone recognize this serial board for the TRS-80...Model 1 I think.
It came with a bunch of model 1 stuff years ago. I haven't been able to
locate much online. Some manual type material would be great. Nothing on
the back except "Copyri
1. IBM 2.10 DOS Technical Reference, Sep 1983
2. IBM Hardware Technical Reference, Jan 1983
Hopefully the picture comes through.
Any takers?
Keven Miller - Orem Utah, 84097
ps: the previous HP boards have been claimed.
Does anyone recognize this serial board for the TRS-80...Model 1 I think.
It came with a bunch of model 1 stuff years ago. I haven't been able to
locate much online. Some manual type material would be great. Nothing on
the back except "Copyright 1978 Electronic Systems".
http://imgur.com/a/m5Yi
2017-06-12 20:09 GMT+02:00 Mattis Lind :
>
>
> 2017-06-12 19:55 GMT+02:00 Mattis Lind :
>
>>
>>
>> 2017-06-12 18:59 GMT+02:00 Al Kossow via cctech :
>>
>>>
>>>
>>> On 6/12/17 7:17 AM, Mattis Lind via cctech wrote:
>>>
>>> > There is a note in my RS64 manual, page 3-1 / Figure 3-2, that says
>>> "S
2017-06-12 19:55 GMT+02:00 Mattis Lind :
>
>
> 2017-06-12 18:59 GMT+02:00 Al Kossow via cctech :
>
>>
>>
>> On 6/12/17 7:17 AM, Mattis Lind via cctech wrote:
>>
>> > There is a note in my RS64 manual, page 3-1 / Figure 3-2, that says
>> "Silver
>> > colour Soaped water, Dark blue Special cleanin
2017-06-12 18:59 GMT+02:00 Al Kossow via cctech :
>
>
> On 6/12/17 7:17 AM, Mattis Lind via cctech wrote:
>
> > There is a note in my RS64 manual, page 3-1 / Figure 3-2, that says
> "Silver
> > colour Soaped water, Dark blue Special cleaning liquid" and then an
> arrow
> > to the disk surface in
That would fit. Most metals are white (silvery) and rhodium, being a noble
metal, doesn't oxidize so it retains the base metal color.
I wonder if it's the anti-friction properties that were impaired by LA smog.
Even 1970s smog seems insufficiently potent to cause any changes to rhodium.
Or m
that does seem to be the case. I never looked to see that rhodium plates silver
white.
http://www.foxfinejewelry.com/blog/article/rhodium-plating-or-dipping-your-yellow-gold-jewelry-into-white-gold-jewelry/
On 6/12/17 10:43 AM, Paul Koning wrote:
That seems odd because rhodium is a noble metal (a
> On Jun 12, 2017, at 12:59 PM, Al Kossow via cctalk
> wrote:
>
>
>
> On 6/12/17 7:17 AM, Mattis Lind via cctech wrote:
>
>> There is a note in my RS64 manual, page 3-1 / Figure 3-2, that says "Silver
>> colour Soaped water, Dark blue Special cleaning liquid" and then an arrow
>> to the di
On 6/12/17 7:17 AM, Mattis Lind via cctech wrote:
> There is a note in my RS64 manual, page 3-1 / Figure 3-2, that says "Silver
> colour Soaped water, Dark blue Special cleaning liquid" and then an arrow
> to the disk surface in the picture.
> Any thoughts about what the "Special cleaning liq
found it. The main change was the handling of the PSR for the 11/44 and
I also created a version that could read 18 bit tapes.
I'll UL all the versions to bitsavers under bits/DEC/pdp11/dectape/tools/
The mirrors should pick them up after noon PDT
On 6/12/17 8:30 AM, Al Kossow via cctalk wrote:
here was the thread way back when
https://groups.google.com/forum/#!topic/vmsnet.pdp-11/0RZKjpVmIGQ
and
http://www.dbit.com/pub/pdp11/rt11/putr.mac
I'm still looking for my version of putr.mac
but that should get you started.
Most of the non PDP-11 tapes on bitsavers were read with this.
>
>> Also perhaps noteworthy that this RS64's "twin" which resided in the UW
>> Computer Systems Lab was at one point "resurrected" by flipping the disk
>> upside down.
>>
>
> Then one definitely need the track writer I guess. But it is good to know
> that it is possible to flip the disk if it is i
On Sat, Jun 10, 2017 at 10:59:14PM +0200, Mattis Lind via cctalk wrote:
> BTW. Speaking of dumping. Now that I have a TC11 / TU56 that seems to be
> working, what is the best way to dump 18 and 12 bit tapes? Is there some
> PDP-11 OS that can do it or is it assembly programming required? I had
> ho
2017-06-12 0:27 GMT+02:00 Jay Jaeger :
> On 6/8/2017 2:22 AM, Mattis Lind via cctech wrote:
> > I happened to find a RS64 / RC11 combo (missing the PSU though). The
> > previous owner was an ex DEC field engineer that himself got it in the
> > beginning of the seventies. It is used but has the shi
On 11.06.2017 23:06, Anders Nelson via cctalk wrote:
What a steal, if I weren't moving to a 2 bedroom apartment in NYC I'd grab
it!
I'm currently the high bidder!
Curious if I will win the auction.
:-)
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