ocr: C64 CIRCUIT THEORY PB 0 1 2 17 14 5 6 3 CTRL STOP! SPACE VE a 2 Mig.fe 3 W A SHIFT Z S 5 R D 7 G B H 9 U M K D HER> SHIFT CLR PAI DEL RET CASA a CRSR F1 F3 F5 F7 Y RESTORE U20 NMI 6510 ww 555 MS :e 5V ik AFTHINN. reg.aoy KEYBOARD MATRIX Keyboard, Joystick, and Paddle Interface Circuits. Joystick Interface. Keyboard Interface. U1 also Parallel contrals port the B joystick. accepts inpuls Parallel from port the A A accepts joyszick inputs connected froiti to the Bj contral joystick part 1. connected When the to joystick control port 2. U1 isa Complex Interface Adapter (CIAN. Both parallel ports ...
