Dave Dunfield wrote....
Hopefully there will be at least one boot disk among
the "blank" floppies
that you have, as getting the OS into a horizon without a boot disk can
be difficult (not not impossible).
I have images for several NorthStar OS's on my site.
You're awesome Dave :)
I spent a little time tonight and got your wonderful
NST program working and downloaded some disk images from your site. I was
able to recreate the disk images pretty easily. Thanks for creating &
sharing NST (as well as the images). Yes, I found one disk still in one of
the drives that was bootable. It was an application disk and was missing
parts of the os, but it had dos and M0000 on it so I was in business.
If have have a ROM board, easiest thing to do is to
deselect RAM at 0000
and put in a ROM monitor. I used the older "loads at 2000" versions of N*
OS for the in-memory system, so you have 8K at 0000. You will also need
to change the power-on vector jumpers on the CPU board to activate
your ROM. (There is also 4K of "free" space from F000-FFFF is that
works out better for you).
Looks like two of the machines have three memory boards, one has one. I
believe each board is 16K? Two of the machines also have 8K SRAM boards. Two
have the prom option on the cpu, and one has an S100 extender board in it.
Nifty stuff :)