Small machines eh?
How about a Casio PB-2000C, in all its pocketable 910 kHz glory, up to 64k RAM shared between heap, stack, code and RAM filesystem. 192 x 32 LCD and a piezo buzzer. Serial and parallel ports available and a FDD. It also has a ROM card slot. And a card was developed, the only third-party ROM for this platform, by one Hans Larsson in Sweden, in the late 1980s.
A 64k ROM with:
- a mostly TP 5.5 compatible Pascal compiler, crt and friends
- inline assembly
- units, loadable libraries and all
- debugger
- full-screen editor, global search and replace, etc.
- visual file manager
- CLI with redirection and rudimentary shell scripting - variables, conditionals, arguments
While the hardware platform is somewhat available and there is a very good emulator, due to "issues", the DL-Pascal ROM is not at this time publicly available and only a chosen few have access to it. Luckily there is a preservation effort underway.
Sounds fascinating. Is there anywhere we can read more about this preservation effort? Does the PB-2000C have an active user community today?
Interesting, given the prominence of Casio calculators in Portugal to this day.
However it was always BASIC in the models we had access to.