[Coco] Drive controller problem

[Bob Devries]

PRINT PEEK(&HC000)
PRINT PEEK(&HC001)

----- Original Message ----- 
From: "Bill" <cwgordon at carolina.rr.com>
To: "'CoCoList for Color Computer Enthusiasts'" <coco at maltedmedia.com>
Sent: Wednesday, April 02, 2014 8:36 AM
Subject: Re: [Coco] Drive controller problem


> Sorry, Bob, I have forgotten how to do all that. (My brain doesn't work as
> well as it used to-?PEEK &HC000??)
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] 
> On
> Behalf Of Bob Devries
> Sent: Tuesday, April 01, 2014 5:17 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Drive controller problem
>
> Bill,
>
> Can you check the first two bytes at $C000 when the HDBDOS ROM is 
> inserted?
> They should be $444B(68, 75 decimal). If that's not what you get, your ROM
> is bad.
>
> Regards, Bob DEvries
> Dalby, QLD, Australia
>
>
> ----- Original Message -----
> From: "Bill" <cwgordon at carolina.rr.com>
> To: "Coco Enthusiasts" <coco at maltedmedia.com>
> Sent: Wednesday, April 02, 2014 3:17 AM
> Subject: [Coco] Drive controller problem
>
>
>>I have a problem with one of my drive controllers. Whenever I swap out the
>> 24pin chip for an HDBDOS chip, the controller works perfectly. When I put
>> the original chip back in it gives me an "EXTENDED COLOR BASIC" message.
>> Something tells me it's the chip itself.
>>
>> I'm looking for someone who has a spare chip they would sell for a
>> reasonable price. It's the 24 pin TMS4764-30NL
>>
>> Thanks
>>
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