[Coco] NitrOS-9 beginner

[Bill Nobel]

Hi Robert,  My first guess would be RAM.  That will usually cause the garbage issues on the page flipping (bad cells in the RAM chips).  Second guess would be the GIME.  I would try one of the RAM tests available first.

Bill Nobel

> On Jul 9, 2015, at 1:40 PM, Robert Hermanek <rhermanek at centurytel.net> wrote:
> 
> So... maybe my coco is getting flaky.  Using latest and greatest DW4 server, and the proper DW image, I try booting NitrOS and it hangs, or sometimes I get the "FAILED" message.  And I do this five or six times.  And finally, it succeeds, and I make it to the prompt and all is well.
> 
> It put me in mind of something I noticed ages ago:  One of my kids typed this program in, from the coco3 extended basic book:
> 
> 10 PCLEAR 8
> 20 FOR P=1 TO 8
> 30 PMODE 0,P
> 40 PCLS
> 50 LINE (128,0)-(138,10+(P-1)*15),PSET
> 60 CIRCLE (128,P*15),15
> 70 NEXT P
> 80 FOR P=1 TO 8:GOSUB 110:NEXT P
> 90 FOR P=7 TO 1 STEP -2:GOSUB 110:NEXT P
> 100 GOTO 80
> 110 PMODE 0,P
> 120 SCREEN 1,0
> 130 FOR T=1 TO 10:NEXT T
> 140 RETURN
> 
> And it animates a crude yo-yo using page switching.  My coco3 does this for a while.  Then I see flickers, sometimes a little garbage from 32-col text screen in between page switches, and then eventually the system hangs.
> 
> So, which part of my coco3 is failing?  It is stock 6809 + cloud 9 512K upgrade (simm version), and I have HDB-DOS loaded in a rs-232 pak, so it is running on the high-speed poke.  I'm thinking my OS-9 booting issues are not OS-9 issues at all...
> 
> -RobertH
> 
> 
> On 7/3/2015 5:48 PM, K. Pruitt wrote:
>> Bypassing the floppy and booting straight in to NitrOS-9 via drivewire is going to be the easiest most direct method.
>> 
>> I'd save the boot floppy as a last option.
>> 
>> ----- Original Message ----- From: "Robert Hermanek"
>> Sent: Friday, July 03, 2015 3:14 PM
>> Subject: Re: [Coco] NitrOS-9 beginner
>> 
>> 
>>> Cool, thanks everybody.  If tackling DW config + NitrOS is too much, I may begin with the (possibly simpler) 35T disk image below.
>>> 
>>> On 7/3/2015 4:44 PM, K. Pruitt wrote:
>>>> Yes, you got it.
>>>> 
>>>> The image to use would be
>>>> 
>>>> nos96809l2v030300coco3_dw.dsk
>>>> 
>>>> I do believe you will have to issue a drive command or select HDBDOS Translation under the Tools menu of Drivewire. Someone knowledgeable on HDB-DOS will have to comment on that. Or since you already use HDB-DOS you probably already know how to do that.
>>>> 
>>>> After you boot in to NitrOS-9 you can easily create boot disks in your floppy.
>>>> 
>>>> But I've tossed a 35-track boot disk for you on drop box in case you need it.
>>>> 
>>>> https://www.dropbox.com/s/ew57u2pmj6cpnua/BOOT35T.DSK?dl=0
>>>> 
>>>> 
>>>> 
>>>> 
>> 
>> 
> 
> 
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