I did not know this utility but it seems to be similar to another one called Minicomp and published in A.N.A.L.O.G Computing Magazine #23 (October 1984)
It was for Atari 800 computer.
The BASIC subset was only 11 instructions:
IF A=B THEN nnn
IF A<B THEN nnn
The 2 main programs on your tape files are a little bit different (for example, the one with example disable the keyboard during the compilation)
I think there are some weird bytes on your tape files.
At first sight:
- line 2280 (T-COMPSE): A(KEND44)=A0 should be A(K,44)=A0
- line 2280 (T-COMP): ^A<F9>LEN!FOR4)=A0 should be A(K,44)=A0
- line 2940 (T-COMP end of line): A(K,40)|216 should be A(K,40)=216
2 others differences but I don't know what is the right one: