| Jim Granville 04/05/16 14:08 Read: 919 times |
#190651 - Cycle variations Responding to: Erik Malund's previous message |
Erik Malund said:
You are probably better to use a more modern Simulator, like TSim51, that shows Cycles
these thing get more and more irrelevant/imprecise since nowadays virtually every derivative has it's own cycle/instruction table. Also for some cache misses play a role. Hehe, well yes, this is something of a moving target. However, Zoltán has added a while back variant-cycle support for SiLabs and others, but the cache parts are a challenge. I am testing the cache style rules for EFM8LB1, and some code is certainly 'context dependent' - that said, it is predictable given a complex enough rule set, and mostly needs ALIGN to minimize time. Test vehicle is a VGA display, as that easily shows any errant jitter. I can get predictive and stable results, with some care, @ 72MHz The new STC8F changes the timing & coding rules yet again, but hopefully simpler. |
| Topic | Author | Date |
| AT89LP Developer Studio | Kerim Fahme | 04/03/16 01:52 |
| AT89LP Developer Studio reports Cycles | Jim Granville | 04/04/16 22:17 |
| (this and?) other chips | Erik Malund | 04/05/16 08:29 |
| Thank you, Erik, | Kerim Fahme | 04/05/16 11:15 |
| Cycle variations | Jim Granville | 04/05/16 14:08 |
| Thank you, Jim | Kerim Fahme | 04/05/16 11:04 |
| TSim51 Windows/Linux | Jim Granville | 04/05/16 13:58 |
Thank you again, Jim. | Kerim Fahme | 04/06/16 01:03 |