[Coco] CoCo-XT RTC ROM and disk
Dave Philipsen
dave at davebiz.com
Sat Sep 1 22:31:34 EDT 2018
Spaghetti code is good sometimes! :)
Dave
> On Sep 1, 2018, at 6:47 PM, rietveld rietveld <rietveldh at hotmail.com> wrote:
>
> Maybe post a link to the Hex Editor for others on the LIST. It's a free editor and very easy to use.
> It's fun to open up radio Shack rom paks with it and look at the code. Some is written very tightly others look like spaghetti code
>
> Sent from my BlackBerry
> Original Message
> From: John Mautz
> Sent: Saturday, September 1, 2018 7:29 PM
> To: CoCoList for Color Computer Enthusiasts
> Reply To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] CoCo-XT RTC ROM and disk
>
>
> 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.
>>>>>>>>>>>>
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>>>>>>>>>>>>
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