Re: ProDOS Kernel Rewritten

[Mike Guidero <mike@bogus.net>]

I have to ask... why?

4 GB is more space than I could possibly want.  It's possible there isn't 4 
GB of Apple II software out there :)

My GS is perfectly happy with a 40 MB drive.

I mean, it's cool and all, though.

Mike

Bryan Parkoff wrote:

> ProDOS Kernel Rewritten
> 
>     I am working on ProDOS Kernel that will support hard drive up to 4GB. 
>     I
> understand that some IDE controller card such as Turbo IDE controller card
> (from //SHH Systeme) can only support up to 2GB.  I will allow ProDOS
> Kernel
> to use 2GB.  I don't know SCSI controller card since I don't carry it with
> me for Apple IIgs.
>     If I get SCSI controller card in my own, I will be able to write
>     device
> driver of ProDOS Kernel that will support 100MB and 250MB Zip Drive.  It
> may be 750MB Zip Drive unless USB controller card will be built for Apple
> //e & IIgs.
>     If SCSI hard drive supports maximum of 4GB, it will be wonderful for
>     me
> to rewrite ProDOS Kernel to handle 4GB.  I do not worry that current
> ProDOS still use 16 bit that handle only 32MB (from block $0000 to block
> $FFFF). New ProDOS Kernel will use 32 bit that handle 4GB (from block
> $00000000 to block $FFFFFFFF).
>     This allows new ProDOS Kernel to be compatible to all original ProDOS
> Kernel that handles 32MB.  I suspect that new ProDOS Kernel might be
> incompatible to GS/OS v6.0.1 unless new FST will be written.  I try to
> allow some GS/OS System files be modified to support 4GB instead of using
> ProDOS
> FST.  For example, the hard drive will be formatted 2GB before GS/OS
> v6.0.1
> will be installed.  It gives an ability to be very flexible to overcome
> the limitation of 32MB.
>     I don't know the maximum capacity that HFS (Macintosh Format) handles
> perhap 2GB or 4GB.  Macintosh Utilities will be rewritten to support
> ProDOS
> 4GB for transferring files.  I don't know if Mac OS X still use HFS since
> I understand that it uses Unix format.
>     Please comment your ideas suggesting to handle 4GB of ProDOS format
> while I am working on my project to rewrite ProDOS Kernel.  Thanks a
> lot...
> 
> Bryan Parkoff
> BParkoff@satx.rr.com