On 12/1/2011 1:55 PM, Philip Pemberton wrote:
On 01/12/11 04:03, Tom wrote:
At 07:47 PM 11/30/2011, you wrote:
m88k Systems use standard SCSI and can use
anything up to 2GB without a
problem. I have DG/UX 5.?? on CD and 4.?? on Tape here.
As far as I know, the one we have uses standard SCSI (as opposed to
what? Diff?) as well.
All this talk of SCSI has piqued my curiosity... maybe it's time for
another product...
Would anyone be interested in a device with the footprint of a 3.5in
hard disk drive, which allowed SD or CompactFlash cards to be
connected to a SCSI bus?
Perhaps even with the option of emulating SCSI CD-ROM drives
(including those pesky 512-byte block drives), or even multiple
devices at a time ("this partition contains a CD image and is SCSI dev
5, this one is a 1GB hard drive on dev 4, and this is a 100MB
read-only HDD on dev 6").
Obviously device IDs would be fully configurable (so you could make it
pretend to be a Quantum Bigfoot or Seagate Cheetah if you needed to).
Multi-LUN and Multi-Device might have to be (low cost) pay-for
options, though...
"Answers on a self-addressed email, folks!"
Cheers,
I was going to reply only off list, but the lemmings are all responding
here, so I will as well (and I'll send a personal email to boot).
Sign me up. I've been doing research for a few weeks on ways to
accomplish this, but had not thought to post to the list.
I have working SD routines, and a nice uC option (ST32F4 series), but
was stuck at the SCSI interface layer.
I was hoping to sidestep the need for an FPGA, just because they can
inflate the cost of a project quite a bit.
In any event, I am extremely interested in this. I have SD code,
FAT12/16/32 LFN code, and code to handle some image formats, though more
code is no doubt needed.
Jim
--
Jim Brain
brain at
jbrain.com
www.jbrain.com