[Coco] How to detect a CoCo 1 vs a CoCo 2 in software.

[Barry Nelson]

The slower OP amp is EXACTLY why I want to detect the CoCo 1 or 2 in software. I am trying to come up with code that will load the correct version of a DriveWire ROM for a CoCo 1, 2 or 3 by auto detecting the CoCo model and loading the proper code. A CoCo 1 must run at 38400 baud, a CoCo 2 can run at 57600, and a CoCo 3 can run at 115200 baud.

> Gene Heskett gheskett at shentel.net 
> Sun Aug 21 23:15:41 EDT 2016
> 
> On Sunday 21 August 2016 22:37:00 Arthur Flexser wrote:
> 
> > Since one Basic ROM version can be replaced with another, no test
> > based on ROM contents would be totally reliable in distinguishing what
> > model CoCo you had.
> >
> True Art.  But if that rom has been replaced, is not the old grey ghost 
> then functionally a coco2? Minor hardware diffs of course, like the 
> slower speed of the op-amp in the bit-banger, but will this code be able 
> to tell the diff and mis-behave?  How the game plays is of course the 
> final answer.