I finally had a chance to try the keyboard/mouse adapter on an ADB Mac - a PowerMac 8500. Unfortunately it wasn't a total success: the mouse works, but the keyboard doesn't. In SimpleText, typing on the keyboard does nothing at all. In an Open File dialog, typing on the keyboard causes the Mac to play an error chime, or sometimes moves the mouse down by 50 pixels or so. This is with an old Compaq PS/2 keyboard.
Even stranger: after I disconnected the adapter board, and plugged in a real Mac ADB keyboard and mouse, this behavior persisted. So it seems to have left the Mac's ADB driver in a confused state. Rebooting fixed the problem.
I noticed there's an unpopulated 3-pin header on the board, labeled Mac on one side, and ADB on the other side. Do I need to connect a jumper here in order to make it work?
Another thought: the Power Mac 8500 doesn't have any way to force a reboot other than holding command-control-power on the keyboard. Is there a way to do that using your adapter? Which key on the PS/2 keyboard acts as the power key?
Even stranger: after I disconnected the adapter board, and plugged in a real Mac ADB keyboard and mouse, this behavior persisted. So it seems to have left the Mac's ADB driver in a confused state. Rebooting fixed the problem.
I noticed there's an unpopulated 3-pin header on the board, labeled Mac on one side, and ADB on the other side. Do I need to connect a jumper here in order to make it work?
Another thought: the Power Mac 8500 doesn't have any way to force a reboot other than holding command-control-power on the keyboard. Is there a way to do that using your adapter? Which key on the PS/2 keyboard acts as the power key?