Mike,

Graphical LCD extention for Keil uVision simulates a T6963C like LCD controller with subset of T6963C's instructions. Since the main purpose is to use it for graphical user interface design debugging, no text output is supported.

Following is noted in the webpage you provided the link:
"Following commands are supported from the T6963C command set: set_address_pointer, set_graphic_home_address, set_graphic_area, data_auto_write, data_auto_read, auto_reset, data_write_inc_adp, data_write_dec_adp, data_write, data_read_inc_adp, data_read_dec_adp, data_read, bit_set."

So, adding some instructions in the pseudo driver code is not enough.

I believe the DLL is complaining about unsupported instructions in the log file.