Poke %(20070) and Poke %(20076)
By Dave Clark
ARCADIAN 2, no. 4 (Feb. 25, 1980): 27.


From the "Arcadian:"

POKE has been extensively researched by Dave Clark in the area %(20050)=n to 
%(20076)=n. Two useful POKE's are %(20070) and %(20076) which replace standard 
keyboard characters with new geometric shapes - these could be used as game 
pieces.  Try:

10 FOR A = 0 TO 255
20 %(20070) = 160; PRINT #1,A,
30 %(20070) = A; PRINT #1,1,
40 NEXT A

You will see a run of weird characters, then our familiar ones, then more 
unusual ones. The POKE at (20076) is similar.  Try:

10 FOR A = 0 TO 255
20 %(20076) = 8; PRINT #1,A,
30 %(20076) = A; PRINT #1,1,
40 NEXT A

