| ??? 08/02/07 12:46 Read: times |
#142646 - extra junp Responding to: ???'s previous message |
Erik Malund said:
I'll have to think on that one, my ISRs need be pretty fast and an additional ljmp may be a problem. I don't believe this is really an issue. I somehow don't quite believe your fast ISR's are squeezed into the 8-byte slot in the "interrupt table", so you do have that ljmp there anyway If there was no 'extra jump' like this: pg 0 ljmp T1vec (T1vec is a hard coded address)) some other page, at a fixed address T1vec: ljmp relocatable ISR address then I would have to keep all ISRs at fixed locations with 'expnaison room' (that Murphy tell me will be too little. maybe you have an idea that I can not percieve from your post, pray tell. Erik |
| Topic | Author | Date |
| an attempt at a failsave bootloader | 01/01/70 00:00 | |
| do you REALLY need that 1kB? | 01/01/70 00:00 | |
| I'll have to think on that one - excellent idea | 01/01/70 00:00 | |
| Flash uncertainty | 01/01/70 00:00 | |
| I did not consider | 01/01/70 00:00 | |
| extra jump and enough power | 01/01/70 00:00 | |
| extra junp | 01/01/70 00:00 | |
| no magic idea... | 01/01/70 00:00 | |
| maths problem | 01/01/70 00:00 | |
| I am absolutely sure... | 01/01/70 00:00 | |
| the penalty of an extra ljmp... | 01/01/70 00:00 | |
| Dont ReWrite Page 0 | 01/01/70 00:00 | |
not a PC ... | 01/01/70 00:00 |