[Coco] CoCo-XT RTC ROM and disk

Sat Sep 1 17:07:12 EDT 2018

You'll know the length of the header. (It won't be long--I'm not familiar
with CoCo binaries, but maybe a load and an entry address at most.) Then
you have to figure out how to remove them. I have read how to do it before
but don't remember the details.

Good news is it is probably just sorting through a few steps and reburning
the eprom.

Jim

On Sat, Sep 1, 2018, 4:54 PM John Mautz <ejmautz2 at gmail.com> wrote:

> Ok, I'll have to spend some time looking.  When I find it, then what?
>
> On Sat, Sep 1, 2018 at 3:16 PM Jim McClanahan <jim30109 at gmail.com> wrote:
>
> > The first two locations are an ASCII flag. On the working one you have
> > "DK", but the nonworking one doesn't make sense.
> >
> > I think think the point about having a header you need to pull out is
> spot
> > on. Peek a few more locations higher and you will likely find the "DK"
> > again.
> >
> > Thanks,
> > Jim
> >
> > On Sat, Sep 1, 2018, 11:47 AM John Mautz <ejmautz2 at gmail.com> wrote:
> >
> > > Dave,
> > > I have a Multi-Pack....  CoCo-XT is in slot 3.
> > >
> > > working v2.3
> > >     PEEK(&HC000) = 68
> > >     PEEK(&HC001) = 75
> > >
> > > Not working v3.0 - fresh burn
> > >     PEEK(&HC000) = 171
> > >     PEEK(&HC001) = 186
> > >
> > > Thanks,
> > > John.
> > >
> > >
> > > On Sat, Sep 1, 2018 at 11:32 AM Dave Philipsen <dave at davebiz.com>
> wrote:
> > >
> > > > Yeah, with the controller plugged in with the new ROM, what do you
> get
> > > > when you PEEK(&HC000) and PEEK(&HC001)?
> > > >
> > > > Dave
> > > >
> > > > > On Sep 1, 2018, at 10:29 AM, Jim McClanahan <jim30109 at gmail.com>
> > > wrote:
> > > > >
> > > > > Can you PEEK () the ROM from BASIC? That would tell you if the ROM
> > was
> > > on
> > > > > the bus and what the contents are.
> > > > >
> > > > > Not exactly sure what you are doing, so that may not be helpful.
> But
> > my
> > > > > experience with EPROMs is that if they erase and I can successfully
> > > > verify
> > > > > the write, they work. In my homebrew systems it is usually a wiring
> > or
> > > > > timing problem when they don't.
> > > > >
> > > > > good luck,
> > > > > Jim
> > > > >
> > > > >> On Sat, Sep 1, 2018, 11:21 AM John Mautz <ejmautz2 at gmail.com>
> > wrote:
> > > > >>
> > > > >> Ok, received my tube of 2764A chips.  I've tried twice (each with
> a
> > > new
> > > > >> chip) and when I put it in my CoCo-XT card it does not recognize
> the
> > > > >> CoCo-XT.  It just boots to the normal CoCo3 screen.  When I put
> the
> > > old
> > > > >> v2.3 ROM back it it boots fine so I didn't blow that part up.
> Both
> > > > chips
> > > > >> passed verification, so that should be fine.
> > > > >>
> > > > >> I'm using a USBPrg GQ-4X programmer (mine is the 4x not the 4x4
> > which
> > > is
> > > > >> the current version -
> > > > >>
> > > >
> > >
> >
> http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4282
> > > > >> ,
> > > > >> only for reference to help me out not an advertisement, as
> naturally
> > > I'm
> > > > >> having trouble).  When I open the XT-ROM30.Bin, I have a choice of
> > > Read
> > > > >> mode, Fill Mode and File offset. I just chose defaults, Read Mode
> =
> > > > Normal,
> > > > >> Fill Mode = Normal, File Offset = 000000.
> > > > >>
> > > > >> Before I start the trial and error process of burn, test, UV
> erase,
> > > does
> > > > >> anyone have any guidance?
> > > > >>
> > > > >> Thanks,
> > > > >> John.
> > > > >>
> > > > >>> On Mon, Aug 27, 2018 at 10:35 PM John Mautz <ejmautz2 at gmail.com>
> > > > wrote:
> > > > >>>
> > > > >>> Thank you all.  I'm just waiting on my EPROMS to arrive and I can
> > > start
> > > > >>> playing.  You help is much appreciated.
> > > > >>>
> > > > >>> On Mon, Aug 27, 2018 at 4:23 PM rietveld rietveld <
> > > > rietveldh at hotmail.com
> > > > >>>
> > > > >>> wrote:
> > > > >>>
> > > > >>>> I actually have 3.1 or 3.01.    I can upload that if it's not in
> > the
> > > > >>>> archive. As far as I know that was the final release.
> > Unfortunately
> > > I
> > > > >> don't
> > > > >>>> think I have the manual for it but I definitely have the ROM
> > > > >>>>
> > > > >>>> Sent from my BlackBerry 10 smartphone.
> > > > >>>>  Original Message
> > > > >>>> From: tonym
> > > > >>>> Sent: Monday, August 27, 2018 4:14 PM
> > > > >>>> To: coco at maltedmedia.com
> > > > >>>> Reply To: CoCoList for Color Computer Enthusiasts
> > > > >>>> Subject: Re: [Coco] CoCo-XT RTC ROM and disk
> > > > >>>>
> > > > >>>>
> > > > >>>> Pretty sure I uploaded the 3.0 ROM, and manual, a few years
> back.
> > > > might
> > > > >>>> be on "THE ftp" though...
> > > > >>>>
> > > > >>>> Tony
> > > > >>>>
> > > > >>>>
> > > > >>>> ---- Original Message ----
> > > > >>>> From: "Grumpyx" <grumpyx at gmail.com>
> > > > >>>> Sent: 8/26/2018 9:39:03 PM
> > > > >>>> To: "CoCoList for Color Computer Enthusiasts" <
> > coco at maltedmedia.com
> > > >
> > > > >>>> Subject: Re: [Coco] CoCo-XT RTC ROM and disk
> > > > >>>>
> > > > >>>> The color computer archive has them:
> > > > >>>>
> > > > >>>>
> http://www.colorcomputerarchive.com/search?q=burke&ww=0&cat=&cs=0
> > > > >>>>
> > > > >>>> The XT-ROM zip file has several version including 3.0
> > > > >>>>
> > > > >>>>
> > > > >>>>
> > > > >>>>> On Sat, Aug 25, 2018 at 6:55 PM John Mautz <ejmautz2 at gmail.com
> >
> > > > wrote:
> > > > >>>>>
> > > > >>>>> Hello,
> > > > >>>>>
> > > > >>>>> I picked up a CoCo-XT RTC a few months ago.  It works great as
> it
> > > > came
> > > > >>>> with
> > > > >>>>> what I was told is a 5MB HD.  My CoCo-XT has the Western
> Digital
> > > > >>>> 1002A-WX1
> > > > >>>>> card int it.  When it boots it show the Burke & Burke ROM
> version
> > > to
> > > > >> be
> > > > >>>>> 2.3.  I don't see a version on the CoCo-XT RTC card (other than
> > the
> > > > >>>>> copyright 1988, though it could be on the back of the card).
> > > I've
> > > > >>>> doing
> > > > >>>>> some searches for about a week now and I must be searching the
> > > wrong
> > > > >>>> way as
> > > > >>>>> I'm not finding any hits.
> > > > >>>>>
> > > > >>>>> This brings me to my 2 questions:
> > > > >>>>> 1) Does anyone have a newer version of the ROM?  If so can you
> > > > >> provide a
> > > > >>>>> link or send it to me?  I have searched around and all I can
> find
> > > is
> > > > >> the
> > > > >>>>> manual for version 2.4 and a 2.5 supplement. - BTW: I'm willing
> > to
> > > > >> read
> > > > >>>> and
> > > > >>>>> upload my version 2.3 ROM if someone wants it.
> > > > >>>>>
> > > > >>>>> 2) Has anyone see the disk imaged some place?  I've looked and
> I
> > > seen
> > > > >>>> where
> > > > >>>>> it used to be sold for $24.99 but no links to the actual
> > software.
> > > > >>>>>
> > > > >>>>> So other than completeness, why do I ask?  I was able to get a
> > > Tandy
> > > > >>>> 20MB
> > > > >>>>> external hard drive.  The PS was dead so I replaced that and
> > would
> > > > >> like
> > > > >>>> to
> > > > >>>>> use the Seagate ST-225 that came with it.  Therefore I need the
> > > disk
> > > > >>>> with
> > > > >>>>> the utilities on it.
> > > > >>>>>
> > > > >>>>> Thanks,
> > > > >>>>> John.
> > > > >>>>>
> > > > >>>>> --
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> > > > >>>>>
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