Original Price according to SPOT/SPEX:
FORTH on ROM complete with a RS232 and Parallel interface.
Forth on ROM cartridge. The cartridge switches out the Spectrum BASIC ROM and replaces it with its own 12K ROM which includes FORTH, Z80 assembler and terminal software. The card also has a RS232 port (via 8251 chip), 24bit parallel (via 8255 chip).
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