| ??? 11/26/08 23:49 Read: times |
#160332 - Right back to basics - really foundational stuff Responding to: ???'s previous message |
Marlon Foendoe said:
MOV DPTR, #TEXT
TEXT: DB "Hello World", 13, 0
When I load DPTR with text what happen then??
'Text' is a Label; that is, a symbolic name for an address. Therefore the above code simply loads the address of the start of the string into the DPTR. It is equivalent to:
MOV DPTR, #1234H
ORG 1234H
DB "Hello World", 13, 0
(using no particular "real" assembler's syntax)
What you subsequently do with the DPTR having loaded it with that address is, of course, entirely up to you... |
| Topic | Author | Date |
| Loading DPTR with ascii code | 01/01/70 00:00 | |
| Used to? | 01/01/70 00:00 | |
| Indirect addressing mode on text | 01/01/70 00:00 | |
| How an assembler works | 01/01/70 00:00 | |
| that is context sensitive! | 01/01/70 00:00 | |
| It depends ... read the datasheet ... then guess | 01/01/70 00:00 | |
| Right back to basics - really foundational stuff | 01/01/70 00:00 | |
| The one thing it most certainly does not do... | 01/01/70 00:00 | |
Thanks!! | 01/01/70 00:00 |