Hardware generates the blinking cursor on the Apple's screen. You can stop the
blinking using this Applesoft program:
10 FOR A = 935 TO 941
20 READ B
30 POKE A,B
40 NEXT A
50 POKE 56,167
60 POKE 57,3
70 CALL 1002
80 END
100 DATA 72,41,63,145,40,104,76,27,253
This program assumes that you have DOS booted. If you don't have DOS, delete
line 70.
After you run the program, the cursor will be a solid block until the RESET key
is pressed, until there is an IN#0 command, or until the Apple is turned off.
The cursor can be completely eliminated by changing the 63 in line 100 to a
191.