| ??? 04/15/08 12:35 Read: times |
#153372 - High, higher, highest... Responding to: ???'s previous message |
Chris Bertrand said:
If your ISR code label is BEYOND the org 100 statement, that would be "higher memory" relative to ALL the ISR routines vector locations. Ah, that makes sense - but you actually said "high" rather than "higher" memory in your previous post. SO a LJMP or a LCALL (although JMP makes more sense) is a smarter, IMO, decision Or AJMP or ACALL. You typically want to keep an ISR routine "together", not start at the interrupt vector and then "jump" to the remain larger part of the code. Yes: if you're going to Jump (or call) anyhow, you might as well keep it all together. I s'pose the exception could be if there's some cases where the ISR does (next to) nothing and others where it has more stuff to do - then you might want to have the trivial case just in the vector location, and jump (or call) for the other case...? By the way: "ISR routine" is a tautology. |
| Topic | Author | Date |
| 8051 interrupt | 01/01/70 00:00 | |
| what language? | 01/01/70 00:00 | |
| 8051 | 01/01/70 00:00 | |
| Ok | 01/01/70 00:00 | |
| Re: OK | 01/01/70 00:00 | |
| As mentioned | 01/01/70 00:00 | |
| High, higher, highest... | 01/01/70 00:00 | |
| Re: As mentioned | 01/01/70 00:00 | |
| My words are not casual...... | 01/01/70 00:00 | |
| It's assembler | 01/01/70 00:00 | |
| this may be help | 01/01/70 00:00 | |
| external trigger address | 01/01/70 00:00 | |
| Read the tutorials... | 01/01/70 00:00 | |
| Check the emulator manual | 01/01/70 00:00 | |
| +800 | 01/01/70 00:00 | |
| read andy's post above | 01/01/70 00:00 | |
| RE: Does this make sense to you? | 01/01/70 00:00 | |
I am sorted | 01/01/70 00:00 |