| ??? 04/02/11 16:11 Read: times |
#181676 - Use code tags Responding to: ???'s previous message |
Life is easier if you make your code readable by humans.
I know that some assemblers are forgiving, but why make life difficult?
START:
LOOP: SETB P2.0
JNB 2.0,SUBONE
SETB P2.1
JB 2.1,SUBTWO
SETB 2.2
JB 2.2,SUBTHREE
SEB 2.3
JB 2.3,SUBFOUR
SJMP LOOP
SUBONE:
RET
SUBTWO:
RET
SUBTHREE:
RET
SUBFOUR:
RET
END
I am sure that your assembler will assemble correctly. Note that your SUBroutines mst all be in 'relative addressing' range. If those labels are undefined, you will get the error messages. Likewise if they are out of range. If you check your assembler manual, you will probably see that 2.3 is not a valid bit address. P2.3 is valid. As a general rule the 'port' must be on a 0bxxxx000 address for bit addressing to work. David. |
| Topic | Author | Date |
| problem with simulator? | 01/01/70 00:00 | |
| First of all | 01/01/70 00:00 | |
| normally? | 01/01/70 00:00 | |
| RE: "normally" | 01/01/70 00:00 | |
| just saw it | 01/01/70 00:00 | |
| Erik | 01/01/70 00:00 | |
| "bible time" | 01/01/70 00:00 | |
| Thanks but.... | 01/01/70 00:00 | |
| all the same | 01/01/70 00:00 | |
| Learning requires study | 01/01/70 00:00 | |
| a small correction | 01/01/70 00:00 | |
| Thankyou | 01/01/70 00:00 | |
| the chips listed .... | 01/01/70 00:00 | |
| bit/byte addressing | 01/01/70 00:00 | |
| "unknown label" | 01/01/70 00:00 | |
| Use code tags | 01/01/70 00:00 | |
| relative addressing | 01/01/70 00:00 | |
| the Assembler tells you. | 01/01/70 00:00 | |
| How would I find out if the labels are undefined? | 01/01/70 00:00 | |
| nope | 01/01/70 00:00 | |
horribly wrong | 01/01/70 00:00 |