| ??? 01/20/08 15:36 Modified: 01/20/08 15:39 Read: times |
#149768 - SDCC, copying integer in ASM |
Using SDCC I made something like this:
unsigned int mainoff = 5000; mainoff = ~(--mainoff); _asm mov _TL2,_mainoff mov _TH2,(_mainoff + 1) _endasm; Its suppose to set TL2 and TH2 to Two's complement of mainoff so it will take mainoff ticks to overflow timer2. Is this correct? And is there a equal in C? I tried rotating and it resulted in a much longer code. P.S: In the program mainoff is limited to: 1-50,000 Thanks. |
| Topic | Author | Date |
| SDCC, copying integer in ASM | 01/01/70 00:00 | |
| Shift-and-mask, or union | 01/01/70 00:00 | |
| I used asm tag and the rr command but.... | 01/01/70 00:00 | |
| Your question | 01/01/70 00:00 | |
| Portable unions | 01/01/70 00:00 | |
| Less non-portable? | 01/01/70 00:00 | |
| Less non-portable | 01/01/70 00:00 | |
| portable, schmortable | 01/01/70 00:00 | |
| Disagree! | 01/01/70 00:00 | |
| how portable? | 01/01/70 00:00 | |
| emphasis | 01/01/70 00:00 | |
Real world portable | 01/01/70 00:00 | |
| using - does not give the same result | 01/01/70 00:00 | |
| try this | 01/01/70 00:00 | |
| You are exceeeding 2 byte signed integer limits | 01/01/70 00:00 | |
| Fighting the tools | 01/01/70 00:00 | |
| Thanks all. | 01/01/70 00:00 | |
| Dangerous | 01/01/70 00:00 | |
| Very important warning! | 01/01/70 00:00 |