shatara@islnds.enet.dec.com (Chris Shatara) (08/30/90)
I asked this a while back but have not seen any answer. How does prodos 8 see a hard disk volume. With GS/OS we have a SCSI driver/Manager to facilitate things. What is the equivalent in P8 land? ============================================================================= | Chris Shatara | Internet: shatara@islnds.enet.dec.com| | Opinions expressed are | DEC Easynet: islnds::shatara | | mine and mine only! | UUCP: ...!decwrl!islnds!shatara | =============================================================================
jsd@GAFFA.MIT.EDU (Thrill Kill Kult) (08/30/90)
In article <1888@mountn.dec.com> shatara@islnds.enet.dec.com (Chris Shatara) writes: >How does prodos 8 see a hard disk volume. With GS/OS we have a SCSI >driver/Manager to facilitate things. What is the equivalent in P8 land? I don't really understand this question. Prodos 8 sees a hard drive as a normal drive with a big volume size. You use any normal MLI call on it, as if it were a floppy, or a UniDisk, or a RAMdrive, or whatever... In ProDOS, a drive is just a bunch of blocks, a hard disk even more so... +---------------------- Is there any ESCAPE from NOISE? ---------------------+ | | |\ | jsd@gaffa.mit.edu | ZIK ZAK - We make everything you need, | | \|on |/rukman | -Fight The Power- | and you need everything we make. | +----------------------------------------------------------------------------+
jb10320@uxa.cso.uiuc.edu (Desdinova) (08/30/90)
In article <9008292205.AA11166@gaffa.MIT.EDU> gaffa!jsd (Jon Drukman) writes: >In article <1888@mountn.dec.com> shatara@islnds.enet.dec.com (Chris Shatara) writes: >>How does prodos 8 see a hard disk volume. With GS/OS we have a SCSI >>driver/Manager to facilitate things. What is the equivalent in P8 land? > >I don't really understand this question. Prodos 8 sees a hard drive >as a normal drive with a big volume size. You use any normal MLI call >on it, as if it were a floppy, or a UniDisk, or a RAMdrive, or whatever... What he is curious about is probably the drivers built-in to the ROM on the SCSI interface card. Every disk device that wants to work with ProDOS must follow a specific protocol (which is described in many Apple documents) involving having a table of addresses of functions, such as Read Block, Write Block, Format, etc... GS/OS often generates a driver for such devices unless one is specially loaded (e.g. the faster SCSI driver). This is a bit of a simplistic view and not totally coherent, but that's basically it. -- Jawaid Bazyar | Blondes in big black cars look better wearing Senior/Computer Engineering | their dark sunglasses at night. (unk. wierdo) jb10320@uxa.cso.uiuc.edu | The gin, the gin, glows in the Dark! | (B O'Cult)