This is the Tiny Basic port done by Doug Gabbard for the Z80. Tiny Basic was developed by Palo Alto, written by Li-Chen Wang in 1976. I have corrected some minor errors and now it will work properly.
The update was done so that I can add Tiny Basic to my 'BMON' monitor for the TEC-1F. I have also added some extra functionality. See my TEC-1F page for more information