B&R BRCOMP1-0 Anwenderhandbuch Seite 239

LDD R 0884 DATA 04
LSRD
BCC DFE1
STD R 0884 DATA 04
LDX R 0866 & SOURCE 0
LDAA X 000
INX
STX R 0866 & SOURCE
LDX R 0868 & DEST 0
STAA X 000
INX
STX R 0868 & DEST 0
LDD R 0884 DATA 04
*---
DFE1 STD R 0884 DATA 04
BEQ DFE2
LDX R 0866 & SOURCE 0
LDD X 000
INX
INX
STX R 0866 & SOURCE 0
LDX R 0868 & DEST 0
STX X 000
INX
INX
STX R 0868 & DEST 0
LDD R 0884 DATA 04
SUBD # 00001
JMP DFE1
*----------------------
DFE2 CLC
RTS
Example Starting at address $3A00, 50 bytes are read from block 4. The data is stored from
R 2000 onward.
LDAA # 004
STAA R 0881 DATA 00
LDD # $0200
STD R 0882 DATA 01
LDX# R 2000 Dest.addr.
LDD # 00050
JSR DFEE
BCC OK
:
:
Current data length
No odd data lengths
Current data length
Read first byte
Store first byte
Current data length
Current data length
Finished
Read data
Store data
Current data length
Not all data copied
Data transfer OK
Block number 4
Offset to $3800 (Source adr. = $3A00)
Data length
Read data from additional EEPROM
ERROR Check
B&R COMPACT PLC
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