A lot of skills used to program the TI-83 will apply to the TI-83 Plus. Since the TI-83 Plus was designed with Flash Apps in mind, there are several differences to know. These include:
• Using the B_CALL macro for ROM calls instead of the regular call op code.
• Size of user assembly programs (not apps) is limited to 8K.
• The prog/list symbol table is slightly changed. It now also includes group/appvar/tempprog entries, and the entries are three bytes longer. Any routines that manually looked through the symbol table will have to be slightly modified.
• Many of the Assembly programs written for TI-83 will execute on the TI-83 Plus. However they will require that the original source code be re-assembled to correct for different physical address locations of Entry Points to the TI-83 Plus's operating system.
• Some Entry Points which existed in the TI-83, such as "PGMIO_Exec" will need to be done differently. The TI-83 Plus SDK documentation provides various system entry points to the individual calls which will allow the programmer to use and understand the programming steps used to input variables and strings.
