I don't see too many quirks in the listing, so most any classical BASIC variant should handle it. Like PC-BASIC[1], FreeBASIC[2], or the venerable GW-BASIC[3].

I don't see too many quirks in the listing, so most any classical BASIC variant should handle it. Like PC-BASIC[1], FreeBASIC[2], or the venerable GW-BASIC[3]. (The later I think you need to run in DOSBox though.) I did notice one unique keyword that should be easy to fix. 6200 PRINT "TYPE "; S$(56) 6210 B3 = CLK(0) 6220 INPUT C$ 6230 B1 = CLK(0) 6240 B1=((B1-B3)*3600)=(D9-1) I couldn't find 'CLK' in any of the BASICs I know of. Seems from context to be a time function. My guess is it returns number of seconds since system boot, or program start. [1] http://www.pc-basic.org/ http://www.pc-basic.org/ [2] https://www.freebasic.net/ https://www.freebasic.net/ [3] http://gw-basic.com/ http://gw-basic.com/