[Coco] Rare item: PHB 80 Column card - Yes PHB not PBJ!

[Gene Heskett]

On Friday 20 September 2013 21:06:55 Luis Antoniosi (CoCoDemus) did opine:

> Ok got the FF78/79 as registers by randomly pokeing things.
> Investigations proceed.
IIRC the other 2, which s/b at $FF7A & $FF7B, may not be readable.  But 
this is sure sounding like mine, which I had to re-adjust to $FF78-7B

If you find something at $FF76 or 77m then its the original broken adress 
as that used half of each of 2 adjacent 4 byte wide blocks.  Thats a 
hanging offense on the coco, wasting an address block that way.

The other addresses you quoted are in the middle of the GIME on a coco3.  
That is an absolute no-no.
> 
> 
> On Fri, Sep 20, 2013 at 8:31 PM, Luis Antoniosi (CoCoDemus) <
> 
> retrocanada76 at gmail.com> wrote:
> > Hi all,
> > 
> > I got this prototype and no drivers:
> > 
> > https://twitter.com/RetroCanada76/status/381207331813343233/photo/1/la
> > rge
> > https://twitter.com/RetroCanada76/status/381211654903459841/photo/1/l
> > arge
> > 
> > I don't believe you ever heard of it. The label says:
> > 
> > PHB COMPUTER PRODUCTS INC.
> > 1923 ANTOINE DRIVE-SUITE B-3
> > HOUSTON TEXAS 77055
> > 
> > PROTOTYPE 80 COLUMN CARD
> > FOR
> > RADIO SHACK COLOR COMPUTER
> > 
> > 
> > But I may ask: Just looking to the photos is it possible to find which
> > hardware register is this card set ? The PBJ uses FF98/FF99/FF9B but
> > what about this one ?
> > 
> > And how close to the 6845 would this beast be ?
> > 
> > 
> > thxs!
> > 
> > --
> > Long live the CoCo


Cheers, Gene
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