Discussion in "Project Doubts" started by    gigyani    Apr 18, 2019.
Thu Apr 18 2019, 02:01 AM
#1
STATREAD:

MOV A, #WTCMD ;LOAD WRITE COMMAND
CALL OUTS
MOV A, #00H
CALL OUT
CALL CREAD
MOV A, R1
MOV STATUS, A
RET

why MOV A , #WTCMD, give me the error A45 enerywhere in the code?
Thu Apr 18 2019, 04:58 PM
#2
Please zip your full code and post it.
Which assembler are you using ?
 gigyani like this.
Thu Apr 18 2019, 10:09 PM
#3
I'm using keil uvision5.
attached is the rar file of the code.
Fri Apr 19 2019, 05:35 PM
#4
The full error is
control_unit.asm(1294): error A45: UNDEFINED SYMBOL (PASS-2)
UNDEFINED SYMBOL means the assembler does not know what WTCMD means.

Somewhere there should be a file containing definitions of things like WTCMD.
Where did you get this code ?




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