4.3.1 Header Files
The MB95200.h and the MB95200.asm are header files, including MB95200H/210H MCU I/O
registers definition;
Here take PDR0 for example. In MB95200.h, PDR0 is defined as below.
/* REGISTER BIT STRUCTURES */
typedef union{ /* Port0 */
_BYTE byte;
struct{
_BYTE P00:1;
_BYTE P01:1;
_BYTE P02:1;
_BYTE P03:1;
_BYTE P04:1;
_BYTE P05:1;
_BYTE P06:1;
_BYTE P07:1;
} bit;
struct{
_BYTE P00:1;
_BYTE P01:1;
_BYTE P02:1;
_BYTE P03:1;
_BYTE P04:1;
_BYTE P05:1;
_BYTE P06:1;
_BYTE P07:1;
} bitc;
} PDR0STR;
……
__IO_EXTERN PDR0STR IO_PDR0;
/* Port0 */
#define _pdr0 (IO_PDR0)
#define PDR0 (IO_PDR0.byte)
#define PDR0_P00 (IO_PDR0.bit.P00)
#define PDR0_P01 (IO_PDR0.bit.P01)
#define PDR0_P02 (IO_PDR0.bit.P02)
#define PDR0_P03 (IO_PDR0.bit.P03)
#define PDR0_P04 (IO_PDR0.bit.P04)
#define PDR0_P05 (IO_PDR0.bit.P05)
#define PDR0_P06 (IO_PDR0.bit.P06)
#define PDR0_P07 (IO_PDR0.bit.P07)
In MB95200.asm, PDR0 address 0x0000 is allocated to PDR0 as below.
__pdr0 .res.b 1 ;000000 /* Port0 */
PDR0 .equ 0x0000
4.3.2 Startup.asm File
The Startup.asm is the MB95200H/210H MCU initialization file including stack settings, register
bank settings and watchdog settings etc;
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