RE: Commodore VIC-20 Computer

Ethan, 

Great info... 

thanks

-----Original Message-----
From: owner-cbm-hackers@musoftware.de
[mailto:owner-cbm-hackers@musoftware.de] On Behalf Of Ethan Dicks
Sent: Tuesday, November 30, 2010 9:34 AM
To: cbm-hackers@musoftware.de
Subject: Re: Commodore VIC-20 Computer

On Tue, Nov 30, 2010 at 8:56 AM, Scott <rylos@charter.net> wrote:
> Niklas and Anders,
>
> I'm watching about 6 on Ebay. Great information!
>
> Some more questions:
> Does the VIC-20CR have the Multi-colored VIC-20 logo?

Don't know that one.

> Does the RAM chips effect performance, longevity or replace ability? :)

2114 SRAMs have a high failure rate.  I've replaced them in many
different brands of machines, but they fail *much* more often than
6116 SRAMs.  No difference in performance (that's driven by the bus
speed which is driven by the CPU clock), and no significant difference
in replaceability (18 pins for a 2114 vs 24 pins for a 6116, both
should be soldered in any VIC-20 you see).

I wouldn't really worry about it - there are 2114s in every dynamic
PET (video RAM), many static PETs (main RAM and video RAM), every
old-style C-64 (color RAM) and every VIC-20.  It's not like they fail
left and right, day after day, but they do fail more than any other
type of RAM chip I've ever seen.  OTOH, If I have a dead classic
machine and it has 2114s, I'm prone to suspect them before other
causes.

-ethan

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