[sdiy] Massive processor collection./ 4116 Ram

Sun Aug 1 11:33:13 CEST 2010

Surprising how much interest there still is in the Nascom ... when I bought
mine , it had 16K and as I said expanded it ,  later they were throwing in
an extra 16K free to tempt potential buyers , but it never worked , and they
went bust ... I always thought the fact they were a bit nerdy and never
thought about supplying even a basic case might have been a put off
factor... fun though to build (schollkids have no fear with a soldering
iron) , as was my PET, which I modded quite extensively as well, cutting
lines on the M/B, soldering a soft reset switch , etc... de soldering the
holes for sockets was a chore and I found out the 4008 chips were in fact
4116 with half the chip being dead for whatever reason ...Cheapskate
Commodore...

I was just very surprised about the "philanthropy" of my physics teacher
asking his wife to snaffle a load of chips for me ...

Lol

Regards

Paul 

-----Original Message-----
From: Graham Atkins [mailto:gatkins at blueyonder.co.uk] 
Sent: 31 July 2010 17:32
To: Paul Burns
Subject: Re: [sdiy] Massive processor collection./ 4116 Ram

Hi Paul,

I had a Nascom 2 as well. I bought the memory card with 32K on board.  
You could
buy it with any amount of 16K blocks. I later added the other 16K when  
the prices
started to drop and they were made by ITT as well.

Having recovered it from my parents loft last December, I sold it  
privately to a buyer
6 weeks ago for £250 (Including the later colour graphics and FDC  
cards).

By contrast to the price of RAM then, I bought a new tube of 25x  
Mitsubishi 4164
chips a while back via Ebay for just £6. I got them as spares for my  
PPG Wave that
uses them extensively (No wonder those PPG's were so expensive in the  
early 80's).

Graham

On 31 Jul 2010, at 17:04, Paul Burns wrote:

> A story for you
>
> Many years ago when I was at school my mate and I built computers ,  
> we both
> built Nascom-2 machines , but I also had  Commodore PET 4008, which  
> had 8k
> of ram hard soldered in , although the board had the holes for more  
> ram ,
> they were filled with solder.
> My school did not have a computer at that time , it was that long ago
> (1980), and occasionally my mate and I took our computers in to show  
> them
> off... my physic teacher , looked and said "what memory do these  
> machines
> take , and how much?"
> Both types of machines took 4116 dynamic ram , the Nascom would take  
> 48K and
> the Pet up to 32K...
> He nodded sagely when we told him, and a couple of weeks later in  
> class he
> presented us with some yellow boxes filled to the brim with 4116  
> chips .. it
> turned out his wife was a quality control expert at ITT and he could  
> get
> hold of anything...
> We were gobsmacked , as this amount of chips was about the same  
> price as a
> Nascom say around 400 GBP at the time , so we felt obliged to donate a
> bottle of Scotch and a couple of pornographic videos , for which he  
> had a
> penchant for.
>
> Some intensive solder sucking later and putting in some sockets ,  
> the PET
> got up to 32K , my Nascom-2  was easier as I had already pre- 
> prepared that
> with sockets ...
>
> Sadly now dead, I shall not forget the philanthropy of the guy ...
>
> Regards
>
> Paul
>
>
> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Ullrich  
> Peter
> Sent: 31 July 2010 12:11
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Massive processor collection.
>
>
>> I have tons of 8 bit 40 pin processors like 8080, Z80, 6502, 6809,  
>> 6802,
>> 6803, 6809, S2650, 8039, 8088, 8085, etc in my arcade game stuff.  
>> Rarely
>
>> Ram chips like 2114, 4116, and 2101....different story.
>> Always causing problems.
>
>>> Even I have still have several 6502's and I think a couple of 6809's
>>> from 25 years ago.
>
> Beside PC processors I have a some Z80s, 8085, V20, 8086, 80188,  
> some 6502,
> some 68B09 and tons of 8051
> derivates and maybe my oldest one: a 2650 development system running  
> at
> 600kHz ;-)
>
> And I still have an old IBM PC motherboard with Basic ROMs and  
> cassette
> interface... cool...
> I put a photo of it on my webpage...
> http://home.pages.at/pullrich/index8.htm
>
> Ciao
> Peter
>
> http://www.ullrich.at.tt
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