[Coco] Re: CoCo needs?

[Jim Cox]

Paul:

How hard would it be to make a PLD/FPGA version of the 
chip?

Jim

On Tue, 8 Mar 2005 19:08:46 -0800 (PST)
  "Paul T. Barton" <idezilla at yahoo.com> wrote:
> Guys,
> 
> Yes, the 2793 does DD & HD and it's totally
> compatible with the RS-DISK ROM's. I've used
> a couple in "projects".
> 
> idezilla; Paul T Barton
> 
> --- Roger Merchberger <zmerch at 30below.com> wrote:
> 
>> Rumor has it that jdaggett at gate.net may have
>> mentioned these words:
>> >Torsten
>> >
>> >The WD 2793 would be the ideal chip to design
>> a round, but it to is 
>> >becoming rare.
>> >These too are drying up in the surplus market.
>> It is software compatible 
>> >with the
>> >1793 and is a single 5 volt part. It does not
>> require the two external 
>> >support chips
>> >that the 1793 uses. This would be the painless
>> way to go.
>> 
>> Are they similar enough to the 1773? (Those
>> seem to be made of pure 
>> unobtanium... :-(  ) I can find 2793's... I yet
>> have some totally blank 
>> Disto Super Controllers just waiting for
>> parts...
>> 
>> Also, can you change the datarate to the 2793
>> so you could (theoretically) 
>> access HD floppies? AFAIK, that cannot be done
>> with the 1773. (Not a big 
>> deal to me per se... but it could be fun to
>> tinker with! ;-) )
>> 
>> >Any other chip may require software changes
>> that tends to obsolete many disk
>> >software already written. Not a good
>> situation.
>> 
>> Yupper.
>> 
>> Laterz,
>> Roger "Merch" Merchberger
>> 
>> --
>> Roger "Merch" Merchberger  --  SysAdmin,
>> Iceberg Computers
>>   _±±_                         
>> zmerch at 30below.com
>> (©||®)  If at first you don't succeed, nuclear
>> warhead
>>   _)(_   disarmament should *not* be your first
>> career choice.
>> 
>> 
>> -- 
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>> 
> 
> 
> 
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