On 2016-Dec-23, at 4:14 PM, Cory Heisterkamp wrote:
>> On Fri, Dec 23, 2016 at 11:45 AM, Chuck Guzis wrote:
>>
>>> On 12/23/2016 08:06 AM, Cory Heisterkamp wrote:
Hi Folks,
I recently became the owner of an LGP-30, supposedly in 'working'
condition. However, the machine is ro
On 12/24/2016 12:00 PM, Noel Chiappa wrote:
> their KA10 had a paging box, made by System[s] Concepts
Speaking of which, here's a photo of the display panel from it:
http://ana-3.lcs.mit.edu/~jnc/tech/jpg/SysConKAPanel.jpg
The meter didn't show up well in that, and it's too cool to m
Please forgive this, list-members, I know it's way OT:
https://www.gofundme.com/jeff-kris-kidder-xmas-eve-fire
My super great neighbors across the street lost their home to fire this
evening. =(
These folks are the best of the best.. as the saying goes "Couldn't have
happened a nicer guy!". Plea
On Sat, Dec 24, 2016 at 8:10 AM, Peter Corlett wrote:
> On Fri, Dec 23, 2016 at 04:14:28AM -0700, Eric Smith wrote:
> > The same trick works perfectly well with a 6502, and in fact was
> invented by
> > Don Lancaster using a 6502 years before the ZX80 was designed. That
> doesn't
> > really expla
On Sat, Dec 24, 2016 at 8:43 AM, Al Kossow wrote:
> see if he'll dump the firmware. it's identical to the DCA IRMAprint
>
OK, I've asked. Will let you know.
On 24/12/2016 19:04, "Brent Hilpert" wrote:
> On 2016-Dec-24, at 4:07 AM, Adrian Graham wrote:
>> On 24/12/2016 03:48, "Brent Hilpert" wrote:
>>
>>> The ICL7611 is, I expect, a very-low-power (Intersil's niche) op amp.
>>> Together
>>> with the CMOS 4081 the circuit appears tailored for low-pow
> their KA10 had a paging box, made by System[s] Concepts
Speaking of which, here's a photo of the display panel from it:
http://ana-3.lcs.mit.edu/~jnc/tech/jpg/SysConKAPanel.jpg
The meter didn't show up well in that, and it's too cool to miss, so here:
http://ana-3.lcs.mit.edu/~jnc/tec
On 2016-Dec-24, at 4:07 AM, Adrian Graham wrote:
> On 24/12/2016 03:48, "Brent Hilpert" wrote:
>
>> The ICL7611 is, I expect, a very-low-power (Intersil's niche) op amp.
>> Together
>> with the CMOS 4081 the circuit appears tailored for low-power operation.
>> Is it supplied by the battery?
>> I
On 12/24/16 7:43 AM, Al Kossow wrote:
> see if he'll dump the firmware. it's identical to the DCA IRMAprint
>
the pcb is identical
> From: Lars Brinkhoff
> I have this on AI:
>> the semi-original AI (that is, the KA-10 rather than the PDP-6) was
>> .. was given to a bunch of hackers from Concourse
Oh, right, now that you mention it, I very vaguely recall this.
I'm not sure why I thought they had taken a KA
On Fri, 23 Dec 2016, Cameron Kaiser wrote:
Commodore's Z80 in the 128 was due to unnecessary fear that they might lose
market share to CP/M, when IBM should have been their big worry.
I don't know all of the details of the ST/Amiga technology swap, but BOTH
were too late, if the primary goal was
Original message
From: william degnan
Date: 2016-12-24 3:35 AM (GMT-08:00)
To: cctech
Subject: Re: Transporting an LGP-30
> Well, I think you guys have convinced me that a trip is in order. Better
safe than sorry with a piece of equipment like this.
>
> Yep Chuck, this
see if he'll dump the firmware. it's identical to the DCA IRMAprint
On 12/23/16 8:22 PM, Eric Smith wrote:
> https://twitter.com/yesterbits/status/812415257616457728
>
On Fri, Dec 23, 2016 at 04:14:28AM -0700, Eric Smith wrote:
> On Fri, Dec 23, 2016 at 3:59 AM, Peter Corlett wrote:
>> People who know Uncle Clive's unwillingness to spend a penny more than he
>> has to on bulding computers may wonder why they selected the relatively
>> expensive Z80 over the 6502
I have posted a package of information and ROM images from my project to
clone the 98228A ROM on the VintHPcom group at groups.io. Progress on
laying out a PCB is going slowly as I have little experience and the
learning curve for using Kicad to lay out a board seems pretty steep.
Paul.
> Well, I think you guys have convinced me that a trip is in order. Better
safe than sorry with a piece of equipment like this.
>
> Yep Chuck, this is the CA machine. I was surprised it never reared its
head on classiccmp the past few days. -C
Believe me, I for one was interested, and I was in con
On 24 December 2016 at 05:02, geneb wrote:
>> Commodore's Z80 in the 128 was due to unnecessary fear that they might
>> lose market share to CP/M, when IBM should have been their big worry.
>> I don't know all of the details of the ST/Amiga technology swap, but BOTH
>> were too late, if the primar
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Adrian
> Graham
> Sent: 24 December 2016 12:09
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: ICL7611 op-amp (was: Motorola MC14081B)
>
> On 24/12/2016 04:34, "Glen Slick" w
On 24/12/2016 04:34, "Glen Slick" wrote:
> On Fri, Dec 23, 2016 at 7:48 PM, Brent Hilpert wrote:
>>
>> The op amp is configured as a schmitt trigger or comparator with hysteresis:
>> There is no negative feedback so it is operating at full gain and
>> functions like a comparator.
>>
On 24/12/2016 03:48, "Brent Hilpert" wrote:
>> On a whim I managed to solder new legs onto the old LM385Z and it works,
>> giving 1.2V at IN-, but the output is still only 0.2V.
>>
>> I don't mind admitting I'm stumped :)
>
>
> The op amp is configured as a schmitt trigger or comparator with h
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