FBE0h Dk'tronics Real Time Clock - probably [[Z80 PIO]] Port A Data (RTC Data bus)
FBE1h Dk'tronics Real Time Clock - probably MAYBE [[Z80 PIO]] Port B Data (General Purpose 8bit I/O Port) FBE2h Dk'tronics Real Time Clock - probably MAYBE [[Z80 PIO]] Port A Control
FBE3h Dk'tronics Real Time Clock - probably [[Z80 PIO]] Port B Control
FBE8h Dk'tronics Real Time Clock - (unknown purpose)