Freescale Semiconductor MC68HC08KH12 - Manual (Page 227)

MC68HC(7)08KH12 — Rev. 1.1 Advance Information
Freescale Semiconductor 227
KBDIE7–KBDIE0 — Port-D Keyboard Interrupt Enable Bits
Each of these read/write bits enables the corresponding keyboard
interrupt pin on port-D to latch interrupt requests. Reset clears the
keyboard interrupt enable register.
1 = KBDx pin enabled as keyboard interrupt pin
0 = KBDx pin not enabled as keyboard interrupt pin