GMS81508B HYNIX [Hynix Semiconductor], GMS81508B Datasheet - Page 91

• Manufacturer Part Number: GMS81508B
• Description: HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: HYNIX [Hynix Semiconductor]

HYUNDAI Micro Electronics
;**************************************************************************
;
;**************************************************************************
;
INT_1:
;
;***********************************************************************
;
;***********************************************************************
;
;
;
;
;***********************************************************************
;
;***********************************************************************
;
DSPLY:
;
;***********************************************
;
;***********************************************
;
;
;***********************************************
;
Make_500msFalg:
;
;**************************************************************************
;
;
;
;
;
;
;**************************************************************************
;
FONT
;
;**************************************************************************
;
NOT_USED:
;
DEC. 1999
Subject:
Entry:
Return:
Scratch:
Description:
Subject:
Entry:
Return:
Segment:
EXTERNAL INTERRUPT 1 (CLEAR KEY)
LDM
LDM
LDM
RETI
Seven Segment Display
DIGIT10 or DIGIT1
Output SEG_PORT (R00~R07),
Strobe_port (R22,R23)
STROBE
LDM
NOT1
NOT1
IF
ELSE
ENDIF
LDA
STA
LDA
STA
RET
Set falg at every 500ms
None
500ms flag (F_500ms)
INC
LDA
IF
ENDIF
RET
7-SEGMENT PATTERN DATA
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
nop
reti
END
After read internal RAM data, output data to the port *
ldy
ldy
ldm
set1
f | g |b
e |___|c
|---|
STROBE.3 = 1
A == #250
_a_
d
DIGIT1,#0
DIGIT10,#0
TMR_500MS,#0
STROBE_PORT,#03H
STROBE.2
STROBE.3
!FONT+Y
SEG_PORT
STROBE
STROBE_PORT
TMR_500MS
TMR_500MS
hgfe dcba
0011_1111B
0000_0110B
0101_1011B
0100_1111B
0110_0110B
0110_1101B
0111_1100B
0000_0111B
0111_1111B
0110_0111B
.h
DIGIT1
DIGIT10
TMR_500MS,#0
F_500ms
(DSPLY)
;INT1 Service routine
;0.5Sec Restart
;Segment All Turn Off
;Toggle strobe0
;Toggle strobe1
;Test if R23 is high.
;Segment Data output
;Current Digit Turn On
;Quit
;count up every 2ms
;Compare 0.5S
;clear 0.5sec. counter
;set 0.5sec. flag
;
;
;
;
;
;
;
;
;
;
;Discard Unexpected Interrupts
;Notice Program End
To be displayed Digit Number
*
*
*
0
1
2
3
4
5
6
7
8
9
*
*
*
*
*
*
*
*
*
*
*
*
GMS800 Series
vii