[7] [The IBM 6110344 Keyboard - Scan Code Set 3 of 122-key terminal keyboard](
https://www.seasip.info/VintagePC/ibm_6110344.html)
+[8] [IBM PC AT Technical Reference 1986](
+(http://bitsavers.org/pdf/ibm/pc/at/6183355_PC_AT_Technical_Reference_Mar86.pdf)
+
[y] [TrackPoint Engineering Specifications for version 3E](
https://web.archive.org/web/20100526161812/http://wwwcssrv.almaden.ibm.com/trackpoint/download.html)