Date   : Sun, 24 Jul 2005 21:26:53 +0200
From   : John Kortink <kortink@...>
Subject: Re: floppy discs

On 24 Jul 2005 19:18:58 +0100, Jonathan Graham Harston wrote:

>> Message-ID: <ml4sd1tvc6ulds3hlkgvgopcf7r544jpk0@...>
> 
>John Kortink <kortink@...> wrote:
>> >*TAPE issues OsByte 140. Trap OsByte and whenever OsByte 140 goes
>> >past, change it to OsByte 141 - *ROM
>> 
>> Yes, but there are game protections that put back
>> the entire standard vector set by copying it from
>> the OS ROM straight to the vector area.
> 
>RFS and CFS are the same filing system. The default vector set
>points to CFS/RFS. The only difference is an internal flag that
>tells CFS/RFS whether to fetch data via a ROM service call or by
>talking to the ACIA.

This was about an OS_Byte trap, remember ? Nothing
to do with filing system issues.

Also, some games might (and do, I think I remember)
check the FS number like any true paranoid piece of
code that reselects the tape filing system all the
time.


John Kortink

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