Omron SYSMAC C200H-ASC02 Operation Manual page 113

Assembly Language Example
Assembly Program
$2000 PSHA
PSHB
PSHX
LDD #$2600
STD $2500
LDD #$2700
STD $2502
LDAB 0,X
LDX 1,X
STX $2504
$2016 LDX $2504
LDAA 0,X
INX
STX $2504
CMPA #$30
BLT $2032
CMPA #$39
BHI $2032
LDX $2500
STAA 0,X
INX
STX $2500
BRA $203B
$2032 LDX $2502
STAA 0,X
INX
STX $2502
$203B DECB
BNE $2016
LDD $2500
LDX #$2600
STX $2504
104
Assembly language program operation:
The numbers and characters are separated and stored in the number stor-
age buffer and the character storage buffer, respectively. Then numeric
strings and character strings are restored as the original character variables.
This program has no practical application; it is an example only.
Saves registers
Sets first address of buffer 1 in pointer 1
Sets first address of buffer 2 in pointer 2
Number of characters to GET
Character variable first address GET
DOUNTIL (number of times equal to the number of characters)
Character GET
Character variable address pointer + 1
IF ($30 min.)
THEN
IF (numeral less than $39)
THEN
Stores numeral in buffer 1
ENDIF
Stores character in buffer 2
Updates counter
ENDDO
Transfer from buffer 1 to a character variable
Section 6-3