[dribnet]

Some context for this code can be found here [1] in Lammers' great book.

Gates specifically says that "not a line of code went out that I didn't look over" for the BASIC 6502 product. At the time (1986) he said he considered BASIC for the 8080 his "greatest achievement ever in programming" and admitted that he no longer programs himself but does was still looking at code and discussing algorithms with his 160 Microsoft engineers.

[1] https://programmersatwork.wordpress.com/bill-gates-1986/