Re: Looking for the elusive "Expanded VisiCalc v1.76a, for the Commodore 8096"

Yes, but since MOS made the ROMs themselves they wouldn't have to look far ;-)Most likely they used overstocked ROMs or perhaps old revisions that were left over after upgrading. Take the 8250LP disk drive. The RRIOT chips in them are from older disk drives. They just bypassed the internal ROM code with an external EPROM. This let them re-use the chips and save money... something Commodore liked doing.
Steve

      From: Mia Magnusson <mia@plea.se>
 To: cbm-hackers@musoftware.de 
 Sent: Monday, March 5, 2018 4:04 PM
 Subject: Re: Looking for the elusive "Expanded VisiCalc v1.76a, for the Commodore 8096"
   
Den Sun, 4 Mar 2018 00:16:52 +0000 (UTC) skrev William Levak
<wlevak@SDF.ORG>:
> 
> The Visicalc ROM is only copy protection. It is accessed only by the 
> loader program.

Yes, afaik it's actually firmware for some printer that is used as
copy protection. They probably asked around for whichever rom were the
cheapest to buy in large enough quantities :)


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