Philip Pemberton classiccmp at philpem.me.uk
Wed Apr 11 19:30:45 CDT 2018

On 25/03/18 00:39, Bill Gunshannon via cctalk wrote:
> On 03/24/2018 07:58 PM, Warner Losh wrote:
> On Sat, Mar 24, 2018 at 5:44 PM, Bill Gunshannon via cctalk <cctalk at classiccmp.org<mailto:cctalk at classiccmp.org>> wrote:
> The Unix-PC has found a new home in the hands of someone
> I am sure will enjoy and appreciate it.  I would expect him to
> show up here sometime with questions as he tries to revive
> it.  I tried booting it and while it booted fine from the diagnostic
> floppy and things like memory and CPU tested OK it won't boot
> off the hard disk which means either the hard disk has died
> (a possibility considering its age) or could just be bit rot.  In
> any event, he got all the floppies that went with it.  Who knows,
> might show up at VCF-East some day.
> At least it has MFM hard drives, which means that it can use the MFM emulator to have near infinite storage (sadly, only ~64MB at a time due to limitations in the controller, it seems).
> I wondered about that.  I heard someone was working on one but I never saw it.
> Got any pointers?  70M is the limit I think.  has something to do with the registers
> in the controller.  But I seem to remember a mod to let it use two disks. That would
> make it 140M.

That'd be the P5.1 Mod.

> This one has 1 Meg.  Amount isn't the problem, finding the expansion boards is.  They
> were rare in its heyday and probably unobtanium today.
> As for something more modern, I always thought it would be an improvement if it ran
> BSD.  Even with only one meg it should be able to run 2.11BSD if someone could do a
> port.  Then you put NFS on and disk space is no longer a problem.  :-)

Good luck finding an Ethernet card! I don't like the sound of NFS over
SLIP... (which you'd need a Combo Card for)... or NFS over PPP at 1200
Baud thru the internal modem...

classiccmp at philpem.me.uk

More information about the cctalk mailing list