GMS81C2112 Datasheet, PDF (31/107 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C2112/GMS81C2120
Example: The usage software example of Vector address for GMS81C2120.
ORG 0FFE0H
DW NOT_USED
DW NOT_USED
DW SIO
; Serial Interface
DW BIT_TIMER ; Basic Interval Timer
DW WD_TIMER ; Watchdog Timer
DW ADC
; ADC
DW NOT_USED
DW NOT_USED
DW NOT_USED
DW NOT_USED
DW TIMER1
; Timer-1
DW TIMER0
; Timer-0
DW INT1
; Int.1
DW INT0
; Int.0
DW NOT_USED ; -
DW RESET
; Reset
ORG 0B000H
; GMS81C2120(20K)ROM Start address
;
ORG 0D000H
; GMS81C2112(12K)ROM Start address
;*******************************************
;
MAIN
PROGRAM
*
;*******************************************
;
RESET: DI
;Disable All Interrupts
CLRG
LDX #0
RAM_CLR: LDA #0
;RAM Clear(!0000H->!00BFH)
STA {X}+
CMPX #0C0H
BNE RAM_CLR
;
LDX #0FFH
;Stack Pointer Initialize
TXSP
;
LDM R0, #0
;Normal Port 0
LDM R0IO,#82H ;Normal Port Direction
:
:
:
LDM TDR0,#125 ;8us x 125 = 1mS
LDM TM0,#0FH ;Start Timer0, 8us at 4MHz
LDM IRQH,#0
LDM IRQL,#0
LDM IENH,#0E0H ;Enable Timer0, INT0, INT1
LDM IENL,#0
LDM IEDS,#05H ;Select falling edge detect on INT pin
LDM R0FUNC,#03H ;Set external interrupt pin(INT0, INT1)
EI
;Enable master interrupt
:
:
:
:
:
NOT_USED :NOP
RETI
JUNE. 2001 Ver 1.00
25