[Coco] OS-9 Level1 Version 02.00.00 FYI

[Bill Pierce]

Walter, if that was true, then Level 2 would fail as well, but it doesn't. No, it's a problem in VCC's interrupt design. Something ONLY triggered by L1 code. I've yet to see any COCO 1 & 2 programs (RSDOS) that cause this and it seems to be exclusive to OS9.
I remember when we discovered this a few years ago, we tried removing the "setime" from the startup and L1 would boot all the way to the cmd prompt. As soon as you hit a key, it would crash. Same thing happens if you set a program to autoexec on boot up. It will run the program up until you hit a key.
I guess the key would be to examine how L1 (v2.0) & L2 (since it will run), each handle the interrupts (yes they are different) and find what L1 is doing that L2 is not doing that could cause VCC to fail. Once we know what causes the fail, then VCC can be examined to find the problem.
Other than that, it's worse than finding a needle in a haystack


-----Original Message-----
From: Walter Zambotti <zambotti at iinet.net.au>
To: coco at maltedmedia.com
Sent: Fri, Apr 17, 2020 1:37 am
Subject: Re: [Coco] OS-9 Level1 Version 02.00.00 FYI

I had a go with OVCC and the same result.

Stuck at entering the date.

An ident of the OS9Boot file from that floppy shows

IOman
RBF
CCDisk
DD
D0
D1
SCF
CCIO
CO32
TERM
PRINTER
P
RS232
T1
PipeMan
Piper
Pipe
Clock
SysGo
Shell

The startup does a :

SETIME </TERM

That's it!!!

Could the SysGo be failing to start the shell with the correct device?

Walter

On 2020-04-17 09:21, Robert Gault wrote:
> There is a .zip in the archive
> https://colorcomputerarchive.com/repo/Disks/Operating%20Systems/OS-9%20Level%201%20v02.01.00%20(Tandy).zip
>
> which freezes with VCC on a key stroke when asked for the date. The
> same OS9-L1V201-SYS.dsk works with MAME/MESS in Coco3 mode.
>
> This particular OS-9 version on boot says
> Phonenix release 11/04/2002
> HTTP://COCOOS9.SOURCEFORGE.NET
> when booting.
>
> So, there may still be a problem with VCC emulation.
>
> Robert
>
> L. Curtis Boyle wrote:
>> Correct. That was fixed in OS9 Level 1 version 2.00, since they knew
>> the Coco 3 was coming out. Versions 1.00 and 1.01 both do not work on
>> a Coco 3, for the reason that William has stated.
>>
>> L. Curtis Boyle
>> curtisboyle at sasktel.net
>>
>>
>>
>>> On Apr 16, 2020, at 2:01 PM, William Astle <lost at l-w.ca> wrote:
>>>
>>> That's probably because they overwrite the FExx page when they load,
>>> and, thus, the interrupt vectors get hosed.
>>>
>>> On 2020-04-16 1:58 p.m., David Ladd wrote:
>>>> Thank you sir.
>>>> Yeah OS-9 L1 normally doesn't work with VCC, and not sure why. 
>>>> NitrOS-9 L1
>>>> also doesn't work on VCC either.
>>>> That is why it is always best to have real hardware around for
>>>> testing of
>>>> stuff :D
>>>
>>>
>>>
>>> -- 
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> https://pairlist5.pair.net/mailman/listinfo/coco
>>>
>>
>>
>


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