The Micomsoft XE-1AP was a hand-held controller that had all the functionality of the massive Sharp/Micomsoft Cyber-Stick, released for the X68000, and compatible with the Fujitsu FM-Towns, MSX and Sega MegaDrive. Looking a lot like a cross between a pre-historic Playstation controller and a frisbee, the pad offered one 2-axis analogue control and one single-axis analogue control, in addition to a half a dozen buttons and other features.

While normally a 9-pin DSUB connector won't fit in the PC Engine's 6-pin mini-DIN, there was an adaptor (The XHE-3) which allowed the use of MSX, X68000 and FM-Towns¹⁾ pads on the PCE. When connected, the XE-1AP offered real analogue control to all of four PC Engine games:

• Forgotten Worlds
• Afterburner II
• Outrun
• Operation Wolf

All four games are made by NEC Avenue.

Source:

• http://www6.airnet.ne.jp/wataru/pcefaq/pcefaq.htm (part 16-19)

Related:

• Comparison of Japanese PC, Sega + Amiga DB9 pinouts
• PC Engine controller pinout