Commodore PET

[Bryan Pope]

And thusly were the wise words spake by Ethan Dicks
> 
> On Fri, Nov 09, 2007 at 04:54:18PM -0500, Bryan Pope wrote:
> > > I know C= made static PETs with 2316s and 2114s, but I've never seen one.
> > > All the chiclet-keyboard PETs I've personally laid hands on had 6540s and
> > > 6550s.  Does anyone have any sort of stats for how many static PETs were
> > > made after the switch?   And didn't C= offer 8K dynamic PETs for a short
> > > time?  (16 x 4Kbit DRAMs)
> > > 
> > 
> > DRAM!?  In a PET?!  That is crazy talk! ;)
> 
> I've had a PET with 16x 4116s since 1978, or are you picking on the CBM/PET
> labelling change?
> 

No.., I have just realized I am an idiot..  

> > There was never even DRAM in the C64...
> 
> What do you call 4164s?  (though the C-64/e switched to a pair of 4464s).
> 

I have still much to learn...

> The VIC-20 was always static, though (5K of 2114s).
> 
> > I can't find any schematics of PETs on zimmers.net (used to be one funet) 
> > that use DRAMs...
> 
> Static PET (6550s or 2114s)
> http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/pet/2001/index.html
> 
> Dynamic PET (2001-N)
> http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/pet/2001N/index.html
> 
> DRAM schematic
> http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/pet/2001N/320349-5.gif
> 
> "Universal" PET (40-col, 80-col CTRC...)
> http://www.zimmers.net/anonftp/pub/cbm/schematics/computers/pet/univ/index.html

Thank-you..  You are very much correct in saying there were dynamic RAM 
PETs...  

Cheers,

Bryan