PD243X Datasheet, PDF (5/7 Pages) OSRAM GmbH – Alphanumeric Programmable Display

Program listing
UDISP
’PD 2435 Display PROGRAM’
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....
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0000
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0000 02000C
11
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16
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0003
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20
0003 C0E0
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0005 D2D5
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0007 D0E0
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0009 C289
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000B 32
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26
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000C D282
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000E 758110
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0011 75D800
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34
0014 C2D5
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0016 7800
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0018 79FF
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001A 90F000
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001D 7403
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001F F0
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0020 9000C2
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0023 7820
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0025 7D65
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0027 7420
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0029 F6
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002A 08
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002B DDFC
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002D 12006C
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0030 20D501
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0033 0B
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0034 7D65
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0036 7820
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0038 20D506
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003B C6
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003C 08
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003D DDFC
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003F 0158
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0041 7421
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0043 2B
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$TITLE (‘PD 2435 DISPLAY PROGRAM’)
$MOD515
$NOSYMBOLS
CSEG
$DEBUG
BEGIN:
OPTS:
BLANK:
SHIF:
TEMP:
SHFT:
REV0:
ORG
00H
LJMP BEGIN
;Jump on reset
;
; ^{This is the interrupt subroutine for INTO. This is used to set a flag}
; ^{which then indicates that the message needs to be rolled back.}
;
;
ORG
03H
PUSH
SETB
POP
CLR
RETI
ACC
F0
ACC
IE0
;Set flag for external interrupt
; _{MAIN PROGRAM}
;
;
SETB
MOV
MOV
P3.2
SP,#10H
ADCON, #00H
;Set bit for INT0
;Select analog channel 0
CLR
MOV
MOV
MOV
MOV
MOVX
MOV
MOV
MOV
MOV
MOV
INC
DJNZ
F0
R3,#00H
R1,#0FFH
DPTR,#0F000H
A,#03H
@DPTR,A
DPTR,#(TEXT-1)
R0,#20H
R5,#101
A,#20H
@R0,A
R0
R5, BLANK
;Clear flag 0
;Character pointer in the message
;R1 used as a flag
;Control register of all displays
;Control word for display
;Beginning of the text
;Internal RAM location
;A count for 101 characters
;ASCII for space
;Fill all locations with blank
CALL
JB
INC
MOV
MOV
JB
XCH
INC
DJNZ
AJMP
MOV
ADD
NEXTC
F0,TEMP
R3
R5,#101
R0,#20H
F0,REV0
A,@R0
R0
R5,SHFT
CONT0
A,#21H
A,R3
;Read the next character
;Check if the interrupt was raised
;If no interrupt
;Character count in message
;RAM location 20H
;If no interrupt
;Add the character
;To the top of the RAM buffer
;If there is no interrupt
;Offset for the RAM buffer
 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany
www.osram-os.com • [phone]
5
Appnote 49
May 31, 2000-14