[Coco] CoCo-XT RTC ROM and disk

John Mautz ejmautz2 at gmail.com
Sat Sep 1 19:29:08 EDT 2018 

One additional update.  I put the old 5M hard drive on the controller w/
the updated 3.0 ROM and it does boot to OS9 HD.  So that is a good thing!!
:)

On Sat, Sep 1, 2018 at 7:21 PM John Mautz <ejmautz2 at gmail.com> wrote:

> Rietveld,
>
> I didn't get your email with the editor, but since you posted the name, I
> was able to download it (maybe google ate it if were an exe file).  There
> are 5 bytes on the XTROM30.bin file at the beginning that are not on the 23
> ROM, so I nuked those saved as a test and burned a ROM.  I now get the boot
> logo COCO3 XT-ROM VERSION 3.0 and it does tests the first 512K of memory in
> my CoCo3.  So that is progress.
>
> I'm not sure where the end of the program really is so I didn't try to
> chop anything off the ROM bin file.
>
> They put an Easter egg of the the game of Life so I can see some of that
> test in the ROM file so at least to me it makes it hard to tell where the
> end of the ROM is vs the junk.
>
> Now with the splash screen and memory checker in place, there is at least
> one difference...  On the 2.3 ROM if I turn the hard drive off, it check's
> the floppy drive and then dumps to a READY prompt.  With the state of my
> 3.0 ROM, it just sits there after the memory check.  So still more work to
> do but things are better.  If someone knows this ROM magic, I'm willing to
> share my 2.3 and edited 3.0 file.
>
> Thanks,
> John.
>
> On Sat, Sep 1, 2018 at 5:25 PM rietveld rietveld <rietveldh at hotmail.com>
> wrote:
>
>> I just sent neo to you. It's a small single. Exe.    Open one window with
>> the old rom and a second neo window with the new rom.   Comapre the start
>> and end of the two and delete and save as needed
>>
>> Sent from my BlackBerry
>>   Original Message
>> From: rietveld rietveld
>> Sent: Saturday, September 1, 2018 5:22 PM
>> To: Jim McClanahan
>> Reply To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] CoCo-XT RTC ROM and disk
>>
>>
>> Use the program HDD Hex Editor Neo for Windows
>> I will email it to you right now
>>
>> Basically use it to open your old rom
>>
>> Now open the new rom(.bin) and compare the beginning. Just delete until
>> you get to the same start as the known working one. That will remove the
>> header. Now scroll to to the bottom of the new rom and compare it to the
>> bottom of the known working one. Delete any values after the end of the
>> original
>>
>>
>>
>> Sent from my BlackBerry
>>   Original Message
>> From: Jim McClanahan
>> Sent: Saturday, September 1, 2018 5:06 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Reply To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] CoCo-XT RTC ROM and disk
>>
>>
>> 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.
>> > > > > >>>>>
>> > > > > >>>>> --
>> > > > > >>>>> Coco mailing list
>> > > > > >>>>> Coco at maltedmedia.com
>> > > > > >>>>> https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > > >>>>>
>> > > > > >>>>
>> > > > > >>>> --
>> > > > > >>>> Coco mailing list
>> > > > > >>>> Coco at maltedmedia.com
>> > > > > >>>> https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > > >>>>
>> > > > > >>>> --
>> > > > > >>>> Coco mailing list
>> > > > > >>>> Coco at maltedmedia.com
>> > > > > >>>> https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > > >>>>
>> > > > > >>>> --
>> > > > > >>>> Coco mailing list
>> > > > > >>>> Coco at maltedmedia.com
>> > > > > >>>> https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > > >>>>
>> > > > > >>>
>> > > > > >>
>> > > > > >> --
>> > > > > >> Coco mailing list
>> > > > > >> Coco at maltedmedia.com
>> > > > > >> https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > > >>
>> > > > > >
>> > > > > > --
>> > > > > > Coco mailing list
>> > > > > > Coco at maltedmedia.com
>> > > > > > https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > >
>> > > > >
>> > > > > --
>> > > > > Coco mailing list
>> > > > > Coco at maltedmedia.com
>> > > > > https://pairlist5.pair.net/mailman/listinfo/coco
>> > > > >
>> > > >
>> > > > --
>> > > > Coco mailing list
>> > > > Coco at maltedmedia.com
>> > > > https://pairlist5.pair.net/mailman/listinfo/coco
>> > > >
>> > >
>> > > --
>> > > Coco mailing list
>> > > Coco at maltedmedia.com
>> > > https://pairlist5.pair.net/mailman/listinfo/coco
>> > >
>> >
>> > --
>> > Coco mailing list
>> > Coco at maltedmedia.com
>> > https://pairlist5.pair.net/mailman/listinfo/coco
>> >
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>

More information about the Coco mailing list