TRuSt-80 is a cross-platform TRS-80 (model 1) emulator, based on my Z80 emulator. It has a working keyboard (hint : for " type shift+2 like on the original layout), can run Level 1 and Level 2 basic, and load .cas tape images. You will need a ROM, and the AnotherMansTreasureMIB64C2X3Y.ttf font. If not already installed, you will need sdl2 and sdl2_ttf libraries.
You can customize the RAM, ROM and resolution, among other things, in the ~/.config/trust80/config.toml file. The F12 key quits the emulator.
In the console, the reset command reboots the TRS-80.
The tape rewind command is used to "rewind" the tape.
The tape command followed by a filename is used to "insert" a tape:
tape seawar4k.cas
Since version 0.10.0, there is an integrated machine language monitor:
d 0x0000 disassembles code at 0x0000 and the 20 next instructions.
m 0xeeee displays memory content at address 0xeeee
m 0xeeee 0xaa sets memory address to the 0xaa value
j 0x0000 jumps to 0x0000 address
b displays set breakpoints
b 0x0002 sets a breakpoint at address 0x0002
f 0x0002 "frees" (deletes) breakpoint at address 0x0002
g resumes execution after a breakpoint has been used to halt execution
r displays the contents of flags and registers