I've just updated my Sol-20 web site with the latest version of my emulator
for the Sol, Solace.  Solace runs only under win32 OS's (or OS's that can
emulate a win32 system, such as Wine under Linux or SoftPC on the Mac).
Here's a link to the Sol Archive:
        
http://www.thebattles.net/sol20/sol.html
Follow the links to get to the emulator, which is now at version
3.1.  Source code is included.
What's new since 3.1?
        + emulation of sound for the P.T. Music System software
        + sound effects.  Just as irritating as a real Sol.  Idea from Bob Stek.
        + support for source-level assembly language debugging in the built-in
debugger.
        + in the debugger, there is now a splitter bar that lets you decide how
much of the screen is used for disassembly vs command history.
        + a few bug fixes, including suppressing the annoying bell sound every
time a command was entered into the debugger.
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Jim Battle == frustum(a)pacbell.net