| ??? 06/11/11 07:41 Read: times |
#182601 - visualizing any case where the regular ISP/IAP is too slow Responding to: ???'s previous message |
It's probably one of those cases where, if you've never seen it, you don't appreciate how great it is!
In the old Triscend days, it was trivial to re-map RAM into CODE space (no hardware changes) and, once you'de seen the speed of downloading to RAM, you never wanted to download to Flash again! That's why I came up with these: 
See http://www.antronics.co.uk/portfolio/flashram for the full story. |
| Topic | Author | Date |
| Bootloading using external RAM and EA switching? | 01/01/70 00:00 | |
| Not sufficient! | 01/01/70 00:00 | |
| Use single SRAM chip by tying PSEN to RD? | 01/01/70 00:00 | |
| That qualifies as... | 01/01/70 00:00 | |
| Experimentation ;) | 01/01/70 00:00 | |
| No need for experimentation | 01/01/70 00:00 | |
| Fast-forward to 2010 or thereabouts | 01/01/70 00:00 | |
| It would be a pretty narrow window, but ... | 01/01/70 00:00 | |
| methinks the real reason | 01/01/70 00:00 | |
| That's true for program updates, but ... | 01/01/70 00:00 | |
| visualizing any case where the regular ISP/IAP is too slow | 01/01/70 00:00 | |
| ... and FRAM's pretty fast, too ... | 01/01/70 00:00 | |
Would have liked to have used FRAM... | 01/01/70 00:00 | |
| As long as intervening RESET | 01/01/70 00:00 | |
| do You need EA controlled? | 01/01/70 00:00 | |
| hmm | 01/01/70 00:00 | |
| not surprised | 01/01/70 00:00 | |
| Decided not to use EA (rather, shouldn't) | 01/01/70 00:00 | |
| i'm confused by AT89S52 | 01/01/70 00:00 | |
| This is the page I found | 01/01/70 00:00 | |
| great | 01/01/70 00:00 |