Re: More fun with Freed Z80

[David Wilson <mcs6502@gmail.com>]

On Feb 16, 11:28 pm, Steven Hirsch <snhir...@gmail.com> wrote:
> By allocating a contiguous partition you
> can operate at the block level and avoid a lot of overhead.

Sounds like my Cirtech SCSI card - it allows a ProDOS volume to be
sliced up with a 32MiB/256 resolution (two bytes in the screen holes
are used to represent offset and length). The blocks are marked as
used in the ProDOS bit map but AFAIR do not appear to be used by any
file.

The slices can be installed as DOS 3.3, Pascal 1.3, CP/M or ProDOS
(mainly used when you have multiple hosts sharing a single drive -
each host only writes to its own slice) volumes.