[Coco] Update: os9gen on 128k coco3, rs323 pack

[Michael Furman]

Robert and everyone else:

Thank you very much for your help getting os9gen to work.  I wanted to  
let you know that it worked and I have been trying to create working  
3.2.8 and 3.2.6 boot disks all weekend.

There are many potential issues.

It looks like both of my source 3.2.8 disks created from the  
distribution images have bad sectors or hard-to-read sectors.  Some of  
the 3.2.8 boot disks that I create with the term_vdg driver have the  
issues I mentioned previously, that it gets i2xoC then hangs.  When I  
try to use the 80 col term I get a Nitros9 boot message then the  
system hangs.  Unfortunately I don't have a desktop PC with a floppy  
drive in it currently so I can't write new images out to continue with  
this.

I have been using the silly default line editor.  I learned that  
without giving it additional memory, it doesn't read the entire  
standard.bl file into memory.  It doesn't truncate the file but it's  
still rather weird.  After figuring this out, giving the editor enough  
memory and building yet more disks the hangs mentioned above still  
happen.  This doesn't appear to be the problem.

I made a boot disk using 3.2.6 and added the sc6551.dr and  
t2_sc6551.dr modules to it.  this booted up.  When I tried something  
like echo hi >/t2 the system hangs.  Not sure what's going on.  Any  
specific rs323 handshaking issues I need to be aware of?  I even tried  
booting the standard unmodified disk and manually loading the driver  
and descriptor with the same result.  This might  be due to some  
additional problems:

I tried using the rs232 pak ROM and it seems to hang occasionally.  My  
RS323 pack no longer has its black plastic case.  I don't think this  
in itself is a problem but it's been unprotected for many years (some  
kid took it out of the box to look at it and lost the parts, hmm, I  
wonder who that is...)  I know that static discharge is less of an  
issue with mounted parts than it is with unmounted parts, but still...  
I have to wonder if there's any damage to this board...

I'm using an MPI that has not been modified for use with a coco3.  I  
need to order a new PAL and get this done.

Seems like I have more problems than good news to report.  I will go  
off and continue playing around to see what I can get to work.   It is  
also apparent that I need to get some additional hardware...

--Mikey