Infineon User's Manual, 12.96 Version 1.0 p. 8-18 has bit field (BTYP) '11: 16-bit Multiplexed Bus'. But startup.a66 (line 55 has '; 3 = 16 Bit Non Multiplexed'. Please explain.
Startup.a66 is intended for 8xC166 microcontrollers, whereas you must be reading manual for a different microcontroller. 8xC166 differs from more recent microcontrollers in many respects, including external bus controller. Regards, Mike