This is the bare keypad / display board for the SDK-85+ system. I have taken the SDK-85 concept, added a few additional features, and then divided the system into two boards, one the single board computer and the second is this keypad and display board.

This listing is for the BARE Keypad / Display board in TIN, the CPU board is in its own listing.

There is a keycap design file for the keycaps on the SDK-85+ project site and you can submit directly to WASD keyboards. Or I have some keycaps available in their own SDK-85+ keycap listing

Just like the SDK-85, this board has an 8279 Keypad controller and is mapped nearly the same as the SDK-85 so Intel's resident monitor is easily ported to this platform (and is available on the project page). This version of the keypad / display has the has the following additional features beyond the original SDK-85: - Twelve (12) 7-segment displays rather then the SDK-85's six - Twenty-nine (29) Cherry MX type Keys. The original hexadecimal 16 keys, Step, Go, Sub Mem, Exam Reg, Next, EXEC, RESET, and RST7.5 as in the original SDK-85 plus three general use function keys, a SHIFT key, and RST 65.

This is v1.1 of this board which corrects the /reset signal error in the previous version. Please review the user's manual on the project page for more details.

It would be a good idea to also watch the youtube video introducing this board.

The photograph of the completed board along with the keypad/display board is, of course, a representation of a completed system and not what you are purchasing.