BASIC compiler from Digital Research with GSX support
From wikipedia:
CBASIC is a compiled version of the BASIC programming language written for the CP/M operating system by Gordon Eubanks in 1976–77. It is an enhanced version of BASIC-E, his master's thesis project.
Reserved words
ABS AND AS ASC ATN BUFF CALL CHAIN CHR$ CLOSE COMMAND$ COMMON CONCHAR% CONSOLE CONSTAT% COS CREATE DATA DEF DELETE DIM ELSE END EQ EXP FEND FILE FLOAT FOR FRE GE GO GOSUB GOTO GT IF INITIALIZE INP INPUT INT INT% LE LEFT$ LEN LET LINE LOG LPRINTER LT MATCH MID$ NE NEXT NOT ON OPEN OR OUT PEEK POKE POS PRIN RANDOMIZE READ RECL RECS REM REMARK RENAME RESTORE RETURN RIGHT$ RND SADD SAVEMEM SGN SIN SIZE SQR STEP STOP STR$ SUB TAB TAN THEN TO UCASE$ USING VA VARPTR WEND WHILE WIDTH