From: Mike Paull (mike351_at_ozemail.com.au)
Date: 2004-07-11 08:16:29
> True, but my question was whether there exists an (official) JiffyDOS
> chip that resides on a 27128 eprom and does not have a switch. This
> query is in reference to whether the chip in my drive was made by CMD
> or it's successor, Maurice Randall, and not pirated chip.
Sounds like a pirated chip, does it have a printed sticker on it with the
CMD name and JiffyDos on it? As far as I was aware
all 1541 revisions came on a pcb with switch, although back when CMD owned
it you *may* have been able to order it without that.
> >An original JiffyDOS package normally has both the original CBM DOS and
> >JiffyDOS switchable for compatability reasons,...
>
> Then this means that the drive he sold me has a hacked/bootleg/pirate
> JiffyDOS chip. Is this assumption correct?
Unless you can speak to the former CMD guys and Maurice your going to have a
hard time proving it. Even if it has no sticker on it
he could say that it must have fallen off with age, heat etc..
> >... some programs might not work
> >with JiffyDOS so at least you can switch it out.
>
> I knew that already. And this chip lacks the CBM 2.6 DOS so JD cannot
> be switched out, correct?
Yeap.
Mike
>
> TIA.
>
> -Jack-
>
>
> >mike
> >
> >
> >> -----Original Message-----
> >> From: owner-cbm-hackers@cling.gu.se
> >> [mailto:owner-cbm-hackers@cling.gu.se]On Behalf Of Jack
> >> Sent: Sunday, 11 July 2004 1:32 PM
> >> To: cbm-hackers@cling.gu.se
> >> Subject: JiffyDOS and the 1541-II Drive
> >>
> >>
> >>
> >> Has anybody here ever encountered a JiffyDOS revision for the 1541-II
> >> that doesn't require a switch?
> >>
> >> I just received a 1541-II with Jiffydos, but no switch. I've never
> >> heard of this, so I wrote the seller back, inquiring about it. He
> >> replied: "...the jiffy dos that is installed in your unit does not
> >> have the switch. it works automatically when a jiffy dos system is
> >> used & normal dos operation for non-jiffy systems..."
> >>
> >> AFAIK, only the 1571 and 1581 incorporated autoswitcing. I opened up
> >> the unit and had a look. The EPROM is a 27C128. It is labeled
> >> "JiffyDOS 6.01" Is this chip for real, or is the guy selling me a
> >> line?
> >>
> >> Thanks for comments
> >>
> >> -Jack-
> >>
> >>
> >>
> >> Message was sent through the cbm-hackers mailing list
> >>
> >
> >
> >
> > Message was sent through the cbm-hackers mailing list
>
>
>
> Message was sent through the cbm-hackers mailing list
>
Message was sent through the cbm-hackers mailing list
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