[Coco] CoCoRX

[Dave Philipsen]

You could write the program in position independent code and offer on option for it to copy itself from cart ROM to internal RAM and run it from there....just an idea....or it could copy itself to RAM in the same position and then switch over to 64k mode....

I'm sure you could get enough people to contribute code to make it work.

Dave Philipsen

> On May 28, 2015, at 2:20 PM, John W. Linville <linville at tuxdriver.com> wrote:
> 
> We really ought to put at least a 555 oscillator on there to test
> the audio signal coming back from the cartridge... :-)
> 
>> On Thu, May 28, 2015 at 05:58:59PM +0000, Mark Marlette wrote:
>> John makes a great point here. 
>> 
>> It really should be on a cart, otherwise all kinds of assumptions are being made to get the program loaded. There are assumptions on the pak approach as well, just not so many.
>> 
>> 
>> Mark Marlette
>> http://www.cloud9tech.com
>> mark at cloud9tech.com
>> 
>>      From: John W. Linville <linville at tuxdriver.com>
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
>> Sent: Thursday, May 28, 2015 12:22 PM
>> Subject: Re: [Coco] CoCoRX
>> 
>>> On Thu, May 28, 2015 at 12:12:42PM -0500, Boisy G. Pitre wrote:
>>> I am working on an idea for a CoCo program…. CoCoRX
>>> 
>>> The vision is a complete system test program that checks out a CoCo from top to bottom including:
>>> 
>>> - RAM
>>> - Video
>>> - Cassette
>>> - Serial
>>> - Joysticks
>>> 
>>> It’s a 6809 assembly program, and must work on any CoCo. Adaptability to test CoCo 1/2 as well as CoCo 3 features is a must.
>>> 
>>> I’d like to make this an open source project on GitHub, but only if I can get committals from people who can contribute.
>>> 
>>> If you’re serious about working on this with me and have the 6809 skills and understanding of the components of the CoCo to test, let me know!
>> 
>> I could probably get into this.  I've never really written any diag
>> stuff, but it could be a good skill to develop.
>> 
>> Are you thinking of using some sort of test harness to exercise
>> the external ports too?  Will you be producing a cartridge for the
>> software? :-)
>> 
>> John
>> -- 
>> John W. Linville        Someday the world will need a hero, and you
>> linville at tuxdriver.com            might be all we have.  Be ready.
>> 
>> 
>> 
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> -- 
> John W. Linville        Someday the world will need a hero, and you
> linville at tuxdriver.com            might be all we have.  Be ready.
> 
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