From: Bo Zimmerman (bo_at_zimmers.net)
Date: 2002-07-08 18:17:24
Hello all...
The B500 is identical to either the CBM 610/B128 or the CBM 620/B256
depending on how much memory it has in it. I am almost 100% certain of
this. I've received boxed CBM-II systems with CBM B128 or CBM B256 or other
model numbers marked on the box, while "B500" was the model number on the
silver sticker...
There has been speculation regarding "B500" being part of an early model
numbering scheme that was abandoned by the marketers for the one we are more
familiar with.
- Bo
> -----Original Message-----
> From: owner-cbm-hackers@cling.gu.se
> [mailto:owner-cbm-hackers@cling.gu.se]On Behalf Of Ullrich von Bassewitz
> Sent: Sunday, July 07, 2002 9:18 AM
> To: cbm-hackers@cling.gu.se
> Subject: Re: B500??
>
>
>
> Hi!
>
> On Sat, Jul 06, 2002 at 09:48:17AM -0700, Cameron Kaiser wrote:
> > I've got a motherboard here from a German ex-pat :-) that looks
> like a B500
> > series unit. It has LP ROMs and the 5-pin video port. The
> assembly number is
> > 8256048 and it seems to be dated 1983.
>
> Good deal:-)
>
> I'm still wondering what a B500 really is. How does it differ from the
> Commodore P500 and especially the 600 models? I've of course read the SWoC
> pages, but they are not very clear about this machine.
>
> Is it possible that the B500 is a 600 with just 1MHz clock? Or
> are there other
> differences? And, while I'm asking curious questions: Is the 1MHz
> clock rate a
> proven fact, or a rumor?
>
> The picture at
>
> http://www.ryerson.ca/~sgray/CBM/me/two_open2.jpg
>
> shows a B500 on the left side. However, the mainboard looks
> exactly like that
> of the Commodore 600 - including the oscillator case.
>
> Does anybody know where to download the kernal ROM for a B500
> from the net for
> comparison purposes?
>
> Regards
>
>
> Uz
>
>
> --
> Ullrich von Bassewitz uz@musoftware.de
>
> Message was sent through the cbm-hackers mailing list
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail 2.1.4.