Need RAM disk driver code (BSD4.3 or NeXT)
der Mouse
mouse at thunder.mcrcim.mcgill.edu
Fri May 24 20:44:29 AEST 1991
In article <9105200434.AA19778 at well.sf.ca.us>, squeegee at well.UUCP (Stephen C. Gilardi) writes:
> I am in search of RAM disk driver example code for BSD4.3. [...] I
> have a NeXT computer with no floppy drive.
Well, a NeXT is not 4.3; it's Mach with a 4.3 compatability layer
slapped on. (It's a reasonably good layer at the syscall level, but
it's a long way from 4.3 in terms of real use - full flamage available
by mail.) I don't know for sure what their driver internals look like,
but a quick look at a couple of include files makes it look as though
their driver interface isn't too far from the Berkeley one. Just
beware that a driver that works on 4.3 will not necessarily plug&play.
> [...stuff on floppy...Mac IIci A/UX can read them...can get data file
> on NeXT with floppy contents on it...] I'd like to be able to
> somehow mount that image as (perhaps) a read only block device.
A RAMdisk would solve this problem, yes. But you don't really need it.
The filesystem format is really not complicated. If the floppy
filesystem format is the normal Berkeley filesystem format, I have
programs I wrote that I can send you that are capable of reading stuff
off of it, given the disk contents, even in a file.
Don't you just love binary distributions? :-(
der Mouse
old: mcgill-vision!mouse
new: mouse at larry.mcrcim.mcgill.edu
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