7 Nov
2009
7 Nov
'09
7:35 p.m.
Bob's right.
The CP/M 2 logical drive size limit is 8mb, however there are up to 16
possible logical drives making the physical drive size 128mb. Now that
is a
basic limit. There is nothing to say you can't make partitions mountable
either, though the BIOS would have to be written to suitably support that.
The CP/M 3 logical drive size limit is 32mb, however there are up to 16
possible logical drives making the drive size 512mb.
If you run any of the CP/M 2 improved versions (Zsystem, P2Dos, Novados
and friends)
that limit is 1gb for a logical drive(note that means the allocation
size is 32K and a
bit on the large granular side). You still can address 16 drives.
Allison
Bob Bradlee wrote:
How are you getting around the 8meg max drive size
common with CPM ?
Are you splitting it into many small drives in hardware on in the driver
like Morows dod for the M26 ?
I have an old MPM system that had an M26 on it I would like to bring back to life.
The other Bob
On Fri, 6 Nov 2009 16:42:28 -0500, Andrew Lynch wrote:
Hi! My good friend John and I are working on a
joint www.S100Computers.com &
N8VEM <http://groups.google.com/group/n8vem> S-100 IDE project. It is based
on the following design by Peter Faasse.
John built a working prototype and some software
and I am making a PCB. The
PCB is in trace route optimizing phase now. I can't say exactly when a PCB
will be available but if you think you might be interested please let me
know. PCBs will probably cost *about* $22 give or take some plus shipping.
If you do want a PCB it is important you tell me beforehand so I can include
it in the manufacturing order.
The board will connect to regular IDE devices and
includes mounting areas
and interfaces for laptop (2.5" with the high density 44 pin connector) and
CF adapters. John has his prototype working with a CF adapter mounted on the
PCB and it seems to work fine.
Thanks and have a nice day!
Andrew Lynch