[Coco] NitrOS9 driver for Tandy RS232 Pak?

[Tim Fadden]

Steve,

Why are you in such a big hurry to start ripping out chips?  I have an 
rs232 pack and have been using it since day one with OS9 connected to 
modems, and direct connect to PC,s with no issues whatsoever.  I have 
never OPENED the case.  Make sure they are not talking about the 
modem-pack that RS also sold.  There is a hack for making it a normal 
RS232 port.

If it works, why hack it?


Tim Fadden


Steven Hirsch wrote:
> On Mon, 29 Dec 2008, Gene Heskett wrote:
>
>>> Only one respondant mentioned the need to remove the EPROM from the 
>>> Program
>>> Pak.  I'd rather not damage the label to extract the case screw unless
>>> absolutely necessary.  Can anyone confirm that removal of the internal
>>> EPROM is, in fact, a requirement under NitrOS9?
>
>> Yes.  In fact I am amazed that it is still intact and in place.  It may
>> already have been removed.  IIRC, it contains some sort of a broken, 
>> never
>> was supported by anybody, autobooting vid-text terminal program.  
>> IIRC that
>> is, please understand its been 2+ decades and many many such case 
>> openings
>> for mine.
>
> I'm not seeing an EPROM in this unit.  Holding the PCB with the DB25F 
> connector facing me, there's a 6551 ACIA chip on the right and a 
> 24-pin chip on the left labeled 'SCM95046P.  Is that a masked ROM 
> carrying the firmware?
>
> Would like to be sure before warming up the desoldering station!
>
>> Mine no longer has the little tin can power convertor either as it
>> smoked itself at least 15 years ago, so mine is rewired and must live 
>> in an
>> MPI for power purposes.  It also has the piggy backed kit which I use 
>> for a
>> serial mouse now.  Sweet.  I also used it for a 2nd midi port with 
>> ultimuse
>> for a while, but ultimuse never grew a recording function, so the 
>> mouse won.
>
> What piggybacked unit is this?
>
> Steve
>
>