name: HT82M33A function: 3D Mouse Controller package: DIP18,18 manufacturer: Holtek +--()--+ Z1 | 1 18| VDD Z2 | 2 17| TEST RESET | 3 16| Y2 MODE | 4 15| Y1 OSCI | 5 14| X2 OSCO | 6 13| X1 CLOCK | 7 12| LB DATA | 8 11| RO VSS | 9 10| RB +------+ This pinout came from the Chipdir: http://www.chipdir.org/