Looking for a Real Oldie
frustum at pacbell.net
Tue Feb 5 23:36:17 CST 2008
Robert J. Stevens wrote:
> Around 1981-1985 a friend loaned me a Piece of Equipment. It has a S-100
> Bus with five slots Horizontal in the Back. I had a regular Keyboard and
> a Hex Keypad. I remember I cold enter in Hex Code and was able to Access
> a FDC to test it.
> Can't be sure of the MFG. But Xpandor comes to mind. My Friend says SOL.
> Does this ring a bell with anyone
> Bob in Wisconsin
The Sol or the Expander could both fit the description. The Sol was FAR
more common, though. Neither had a hex keypad -- both had numeric
keypads to the right of the main keyboard. Also, both were designed in
part (Sol) or whole (Expander) by Lee Felsenstein.
http://www.sol-20.org (among many)
I don't know about the Expander, never having used one, but the Sol has
a small (2K) ROM monitor where you can ENTER hex, jump to a memory
location, load/save from/to cassette. Booting a northstar floppy system
was just jumping to the boot ROM (commonly at E800).
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