GMS81C2020 Datasheet, PDF (30/92 Pages) Hynix Semiconductor – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver

GMS81C2020/GMS81C2120
Example: The usage software example of Vector address and the initialize part.
ORG 0FFE0H
DW NOT_USED; (0FFE0)
DW NOT_USED; (0FFE2)
DW SPI_INT; (0FFE4) Serial Peripheral Interface
DW BIT_INT; (0FFE6) Basic Interval Timer
DW WDT_INT; (0FFE8) Watchdog Timer
DW AD_INT; (0FFEA) A/D Converter
DW NOT_USED; (0FFEC)
DW NOT_USED; (0FFEE)
DW NOT_USED; (0FFF0)
DW NOT_USED; (0FFF2)
DW TMR1_INT; (0FFF4) Timer-1
DW TMR0_INT; (0FFF6) Timer-0
DW INT1; (0FFF8) Int.1
DW INT0; (0FFFA) Int.0
DW NOT_USED; (0FFFC)
DW RESET; (0FFFE) Reset
ORG 0F000H
;********************************************
;
MAIN
PROGRAM *
;*******************************************
;
RESET: DI
;Disable All Interrupts
LDX #0
RAM_CLR: LDA #0;RAM Clear(!0000H->!00BFH)
STA {X}+
CMPX #0C0H
BNE RAM_CLR
;
LDX #01FFH;Stack Pointer Initialize
TXSP
;
CALL INITIAL;
;
LDM R0, #0;Normal Port 0
LDM R0IO,#1000_0010B;Normal Port Direction
LDM R1, #0;Normal Port 1
LDM R1IO,#1000_0010B;Normal Port Direction
:
:
LDM PFDR,#0;Enable Power Fail Detector
:
:
Hyundai Micro Electro nics
30
preliminary
Nov. 1999 Ver 0.0