Re: Is Davong (Hard Drives) still in busin

[kburtch@pts.mot.com (Kevin Burtch)]

In article AnH@actrix.gen.nz, dempson@actrix.gen.nz (David Empson) writes:
>I haven't heard of the drive, or any drivers for it.  What sort of

They were popular around the same time as Corvus.

>interface card does it use?  Does it have an EPROM on it?  If so, it

Proprietary, lots of 74LSxxx logic and one EPROM. 

>may be possible to modify the code in the EPROM to add a ProDOS block
>driver.  I did this for the Nestar networking system back in high

I may have to rewrite it anyway to support my "new" Enhanced //e. (I
was using in on a ][+) It doesn't seem to like my 65C02. (it works fine
with the enhanced ROMs and an N-MOS 6502)

>school.  If the card already supports Pascal, it should be a simple
>task to add a ProDOS driver.
>
>There is a catch: how does its Pascal driver work?  Have you used the

Not sure. It patches Pascal, to access the ROM on the card. 

The patch for DOS 3.3 is incredibly minor. I could post it, if I can remember
to bring the book in! :) I'm sure the patch for Pascal is similar. (It may even
list the Pascal patch...)

>...
> 
>> Third, are there DOS 3.3 drivers for SCSI drives?
>
>Not as such.  There are patched versions of DOS 3.3 that allow the use
>of ProDOS block devices, particularly the programs which work on a
>3.5" disk to provide two 400k DOS 3.3 volumes.  I think there is

That sounds like UniDOS (I am trying to get a copy. Anyone?), but I thought
it was only for SmartPort 3.5" drives. (UniDisks) If it works with SCSI, then
I should be able to talk it into creating 400k volumes on a SCSI hard drive.

>...
>David Empson

Thanks,
Kevin Burtch