[Coco] OT SWTPC

[tonym]

...I figure they should know the hardware pretty well, also, not just flex.Tony
-----Original Message-----
From: "Ron Bihler" <rbihler at msn.com>
Sent 2/15/2010 9:55:13 PM
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Subject: Re: [Coco] OT SWTPCThanks,
Not much activity that I can tell, tried to join some time ago.  Also 
the system is not getting as far as flex, kind of like the coco before 
os9 is started in the monitor program.
Ron
tonym wrote:
> I'd check witht he Flex user group.
> Even though you wish to run OS-9, quite a few of them will probably have SWTPC's
> http://www.flexusergroup.com/flexusergroup/fug14.htmTony
> -----Original Message-----
> From: "Ron Bihler" <rbihler at msn.com>
> Sent 2/15/2010 8:22:58 PM
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Subject: [Coco] OT SWTPCI have a SWTPC 6809 system that I have been trying to get up and running 
> again.  It was working at one point, however it seems to be a downhill 
> battle since.  Cleaned the contacts (Many times now)
> I am not able to get the monitor program running (s-bug).  I don't get 
> anything out the serial port and suspect I may have a memory issue - 
> running a logic analyzer it seems to be in the boot up loop or so I am 
> thinking. 
> The monitor program goes through memory checking for the highest 
> location to start the load (Memory is mapped from 0000-up) Then it will 
> send out the serial port the monitor prompt to start. 
> Long story short, I was wanting to confirm that the serial section of 
> the system is working and was thinking to modify the boot rom to send 
> data at startup.  There is a chance that the system is working, but just 
> not talking. 
> This is pushing my knowledge of 6809 code - I can follow along but not 
> sure I am able to do this myself. Without the system working I would not 
> know if it was a hardware issue or my code was bad :)  I was hoping 
> there was a kind person in this group that might be able to help.  My 
> hopes are to get os9 running on this as well, it's current setup for 
> flex - but that's not the same thing ;)
> Ron
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