SCSI emulator

[Dave McGuire]

On 11/5/10 5:13 PM, Ethan Dicks wrote:
> Could even do what some 3rd-party DEC
> drive emulators did - copy non-volatile to RAM at boot time, then RAM
> back to non-volatile when powering down.

   In fact there's at least one DEC product that does that.  I have an 
ESE50, which is an RA90-form-factor drive, 640MB capacity.  There's a 
3.5" hard drive in the box along with a bank of batteries.  When it 
loses AC power, it runs from the batteries and copies the contents of 
the RAMdisk over to the hard drive, and does the opposite on powerup. 
Neat stuff.  I may try to put it on the PDP-11/70 at some point.

            -Dave

-- 
Dave McGuire
Port Charlotte, FL