TRS-80 — VS Code companion extension

Thin orchestration around trszog (the DeZog fork with TRS-80 remotes), so trszog itself stays lean and upstreamable. Four commands (Cmd/Ctrl-Shift-P):

Command	What it does
TRS-80: Assemble	Assemble the current (or picked) source with the configured assembler — zmac for now → zout/<name>.cmd + .bds
TRS-80: Assemble and Run	Assemble, regenerate the launch config for that file, start the debug session
TRS-80: Build	Run trs80.build.command (e.g. make); falls back to Assemble when unset
TRS-80: DeZog Target	Pick the machine, verify it is reachable, (re)generate .vscode/launch.json — the previous one is kept as launch.json.bak

A status-bar item (TRS-80: <target>) shows the active target and opens the picker on click.

Targets

All six are always offered; availability is verified after the choice (missing pieces produce a warning with a fix hint — e.g. a one-click TRS-80: Start Machine for the Verilator target):

1. trs80gp — George Phillips' emulator (Model I/III/4)
2. trs80sim — Model I — Lawrence Kesteloot's emulator, in-process, fast
3. trs80sim — Model III
4. rev-z — Verilator — the cycle-true m1_core RTL, headless emulator
5. rev-z — FPGA — the same RTL on the ULX3S, via serial dongle
6. Model 1 — real hardware — a physical TRS-80 behind the debug dongle

Assemblers

trs80.assembler currently supports zmac (arguments configurable, default --oo cmd,bds,lst). Planned: z88dk, sjasmplus (both will need a /CMD production step) and Z80Asm (Matthew Reed — assembles straight to /CMD for Models I, III and 4). Later: reverse-engineering conveniences on top.

Machine configuration: trs80revz.json

The rev-z machine's feature switches live in trs80revz.json (JSON with comments) in the workspace root — the same file the TRS-80: Start Machine script reads: memory configuration (16k keyboard-only / 32k / 48k), Percom doubler, disks + write protect, cassette, sound, throttle, and the debug dongle. "debugDongle": { "enabled": false } starts the machine without a debug link — the rev-z targets then refuse to start with an explanatory error. TRS-80: Rev-Z Machine Config opens (or creates) the file. The configured dongle port flows into generated launch configs.

Settings (excerpt)

• trs80.zmac.path, trs80.zmac.args
• trs80.sourceExtensions — default .asm .z .z80 .s
• trs80.build.command
• trs80.trs80gp.path
• trs80.revz.emulatorPath, trs80.revz.debugTcp, trs80.revz.bridge, trs80.revz.python
• trs80.dongle.serial, trs80.dongle.baud
• trs80.topOfStack

Install

Not on the Marketplace — side-loaded like trszog:

code --install-extension trs80.vsix

The trs80-dev images bake it in.