This repo provides the emulator for SPC-1000, 8-bit PC produced by Samsung back in 80s, running on TTGO VGA32.
Use the following versions of build tools/configurations:
- Arduino 1.8.18
- fabgl 1.0.9
- board: TTGO T7 V.14 Mini32
mem.c that contains the ROM image is generated as follows:
esp32-spc1000$ z80asm -o dos src/dos.asm
esp32-spc1000$ python gen_romc.py dos > src/mem.c
Follow this instrucables article for setting up the build environments.
Some enhancements were made to IOCS/Basic interpreter to run the emulator smoothly on the platform:
- Added new disk-like operations for file access to cassette I/O:
- DIR
- DEL
- LOAD needs a file to load. LOAD without one tries loading from the currently open file. It returns an error if no file is open.
- SAVE
-
Accelerated I/O: IOCS routines for LOAD/SAVE was rewritten (PWM replaced with direct bit control) to speed up the access.
-
Dynamic configuration is possible via I/O ports. These settings persist across power cycle:
OUT &H800A, <0/1>: Toggles font face between MC6847/CGBUF (MC6847 by default)
OUT &h800B, <0/1>: Turns on/off vintage CRT effect (on by default)
- Ionique blog, the first SPC-1000 emulator on which this S/W is based
- Z80 portable emulator package of Marat Fayzullin