[Coco] Resurrecting a CoCo (26-3001) with a 26-3029 FDC.

[Ryan Pritchard]

Darren,

Thanks for the POKE and EXEC information.  This information allowed me  
to pretty much confirm my FDC is working.  It makes perfect sense that  
NitrOS-9 or OS-9 would be able to load with the POKES and the EXECs  
that you listed.  I reviewed Disk Basic Unravelled, and see that you  
pretty much set the NMI vector and called a routine to have the FDC  
load track 0 I believe.  Since NitrOS-9 is supposed to be an OS of  
it's own it makes sense that loading and running the code found on  
that track / sector would allow the system to boot.

Now all I need is the instructions for the 64K mod for the REV-E CoCo  
1 board and I can possibly get by with out the ECB ROM though I  
probably should look for a source on that too.

Regards,

Ryan Pritchard
Fun Extends All Basic Life Expectancies



On 25-Aug-08, at 11:58 AM, Darren A wrote:

> Assuming the Disk Basic ROM in the controller is version 1.1 (which is
> a fairly safe assumption for a 26-3029 controller) you can boot an
> OS-9 or NitrOS-9 floppy by entering the following sequence of
> commands:
>
> POKE 265,126
> POKE 266,216
> POKE 267,161
> EXEC 49392
> EXEC 57090
>
> Darren
>
> ---------------------------------
>
> On 8/25/08, Ryan Pritchard <coconut at pritchard.ca> wrote:
>> So it looks like I have had 3 or 4 responses explaining I need to
>> acquire an Extended Color Basic ROM for my CoCo, in order for me to  
>> be
>> able to use the FDC.
>>
>> Don't suppose any one has a spare one I could purchase?  Else I
>> suspect I should be looking into eBay or Cloud-9 for a CoCo 2 or 3,
>> which in some ways may be my better bet anyway for running NitrOS-9.
>> But there is still that part of me that wants to take this machine
>> from 16K to 64K with Extended Color Basic.
>>
>> On 25-Aug-08, at 11:27 AM, Chuck Youse wrote:
>>
>>> On Mon, 2008-08-25 at 12:19 -0400, Frank Swygert wrote:
>>>> Will the disk system run without Extended Color BASIC? I seem to
>>>> recall that maybe it won't, but I've never owned a non-extended
>>>> CoCo. I could be wrong...
>>>
>>> You're right, Disk BASIC requires the Extended BASIC ROM.
>>>
>>> C.
>>>
>
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