Re: 32MB is size???

["Bryan Parkoff" <none@nospam.net>]

"Paul Schlyter" <pausch@saaf.se> wrote in message 
news:e0oh20$2h45$1@merope.saaf.se...
> In article <iAHXf.51135$2O6.5759@newssvr12.news.prodigy.com>,
> Bryan Parkoff <none@nospam.net> wrote:
>
>> Hi, I suggest you to read "Beneath to ProDOS" and "Beneath to DOS 3.3"
>> manual.  DOS 3.3 is designed to read 256 bytes per sector at this time.
>> ProDOS is designed to read 512 bytes per two sectors at this time.  It
>> shows that ProDOS is faster than DOS 3.3 for reading and writing because
>> double sectors are stored in the RAM.
>
> No, that's not the reason ProDos reads so much faster than DOS 3.3.
>
> One can fairly easily patch DOS 3.3 so it reads about as fast as
> ProDos does.  A number of special DOS'es, with these patches, are
> known by names like Diversi-Dos, Pronto-Dos, etc --- all of them use
> 256-byte sectors, both at the sector level as well as at the OS level.
>
> -- 
> ----------------------------------------------------------------
> Paul Schlyter,  Grev Turegatan 40,  SE-114 38 Stockholm,  SWEDEN
> e-mail:  pausch at stockholm dot bostream dot se
> WWW:     http://stjarnhimlen.se/

Paul,

    Well, unpatched DOS 3.3 executes 6502 instructions by using extra cycles 
because of crossing page boundary.  ProDOS borrowed patched DOS 3.3 to 
reduce cycles by increasing performance so crossing page boundary is 
avoided.

Bryan Parkoff