name: HT6523 function: PS/2 Mouse Controller package: DIP/SOP16,16 manufacturer: Holtek +--()--+ NC | 1 16| VDD TEST | 2 15| Y2 RESETB | 3 14| Y1 OSCO | 4 13| X2 NC | 5 12| X1 CLK | 6 11| LB DATA | 7 10| MB VSS | 8 9| RB +------+ This pinout came from the Chipdir: http://www.chipdir.org/