[Coco] CoCo-XT RTC ROM and disk

Sat Sep 1 15:16:06 EDT 2018

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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> > >>>
> > >>
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