ProDOS Kernel Rewritten

["Bryan Parkoff" <BParkoff@satx.rr.com>]

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