Re: Commodore Video Connector (revised)

From: Nicolas Welte (
Date: 2000-06-08 09:27:28

William Levak wrote:
> On Wed, 7 Jun 2000, Nicolas Welte wrote:
> > I think what you call version C is called B3 by the service manual, and
> What service manual is that?  Mine only goes up to B2.

It's from 1992, but still only includes 64E, not 64E2 information. I
think I'm going to scan it, or at least the parts that are different
from the 1985 version, when I'm finished with the 128/128D manual.
Actually I have a new set of overlapping scans somewhere, but I forgot
about it somehow. Should be stored in a folder on some HD.

> > has ASSY # 250466. It's the same as B2, but has two 41464 RAM chips
> It is #250466.  I call it version C because that's what it says on the
> serial number label. It's in a case styled like the C128.

Yes, the C64C. The new manual says that either the B3 or E board can be
installed in the C64C, but I've seen very many with the B1. I even think
I have one odd machine with a C64A inside, but that might be due to a
board replacement.

> I read somewhere (I don't remember where) that the original C64 can have
> either a 5 or 8 pin connector.  It only uses the original 5 pins.
> Commodore must have got a good deal on 8 pin sockets.

The one I have does use the extra pin, and it does have separate
luma/chroma output. And it does use the new modulator from the C64A, and
not the discrete transistor circuits from the original NTSC board. But
the chip layout is still the same. I posted a link to a picture of the
relevant half of the board here a while ago, but I don't remember the
link right now (maybe: ).

> See my list of 1541 versions on funet for a description of the variations.

Yes, I know. Your lists are good :-)


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