xtrs
- TRS-80 Emulator (I,III,IV) for X Windows
/Main/Other/src/Applications/Emulators/
README.tpm
Tim Mann <mann@pa.dec.com>
1/12/98
As computer scientists, we always long for something bigger and better
than what we have now. Give us a megabyte, and we want a gigabyte.
Give us an emulated TRS-80 Model I with Level II BASIC and cassette,
and we long for the Expansion Interface and floppy disk drives. Give
us that, and we want a Model III. Give us a Model III, and we want a
Model 4!
This is a snapshot of the work I've been doing on xtrs to add these
niceties. My main additions over xtrs-1.0 have been floppy disk and
hard disk emulation, timer interrupt emulation, a kludge to import and
export data to the host system, Model III mode, Model 4 mode, a
rewrite of the keyboard handling, support for most of the undocumented
Z-80 instructions, and a bunch of bug fixes and minor improvements.
This project has been a real (48KB?) trip down memory lane for me. I
worked as a programmer for Logical Systems, the company that produced
LDOS, during 1980-81 before I went to grad school. I no longer own a
TRS-80, but I recently found a box in my storage closet containing all
my Model I hardware manuals, schematics, ROM disassemblies, and even
the assembly listing for a version of the LDOS Percom Doubler driver
that I helped write, giving me enough information to get my additions
to xtrs off the ground.
Since then I've done much more. Check out my TRS-80 Web page at
http://www.research.digital.com/SRC/personal/Tim_Mann/trs80.html
for details!
Browse inside xtrs-3.5-1.src.rpm:
Download xtrs-3.5-1.src.rpm:
