Kehvarl
Member
If you have a FlashROM or FinalGROM99 or similar, you should definitely check out the repository thread on AtariAge https://forums.atariage.com/topic/253095-?-flashrom-99-finalgrom-99-repository/Did you purchase Extended BASIC as a cartridge, or did you find it as a file somewhere?
smp
This has not only XB but also several enhanced versions of XB with even more features.