A Vcc +5v B K0 C K1 D K2 E K3 F K4 H K5 J K7 K DECODE ENABLE L AUDIO IN M AUDIO OUT LO (MIC LEVEL) N +12V (NEEDED FOR TAPEL PLL) P AUDIO OUT HI (LINE LEVEL) R TTY KYBD RTRN (+) S TTY PTR RTRN (+) T TTY KYBD U TTY PTR V KB ROW 3 W KB COL G X KB ROW 2 Y KB COL C Z KB ROW 1 1 Vss GND 2 PA3 3 PA2 4 PA1 5 PA4 6 PA5 7 PA6 8 PA7 9 PB0 10 PB1 11 PB2 12 PB3 13 PB4 14 PA0 15 PB7 16 PB5 17 KB ROW 0 18 KB COL F 19 KB COL B 20 KB COL E 21 KB COL A 22 KB COL D Notes: To connect to a power supply, connect 5 VDC to pin A, and GND to pin 1, and GND pin K also to enable the address decoder. You only need to put 12 VDC if you want to enable the casette interface. It should draw about 1 amp. Turn on the power supply, then press the RESET on the KIM, as there is no power-on reset circuitry.