| ??? 03/04/05 15:24 Modified: 03/04/05 15:27 Read: times |
#89116 - page switching etc. Responding to: ???'s previous message |
Sure, pages are full of fun :-)
Not a beginners' task, just wanted David to be aware of an existing solution. Usually, one has some internal memory (say, 8-32k) performing the switching, perhaps interrupts and so; and switches say at the upper 32k or so (I, know Erik that you know; this is for David). Nevertheless, he already told us: he needs more data (constants/tables/bitmaps/whatever) memory. I suspect, a few kB for the program itself would be far far sufficient. What David needs, is perhaps a (maybe paged) big data memory. External. And he needs to learn how to manage data memory from the program (it's C, I do not speak C, somebody help him out). Of course, reading the bible is a must. David, concentrate on the hardware part for now. Erik Malund said:
I said: are you talking about the subject of this forum? :)Folks who have done the weirdest things are here... Oh, PICs are far more weird, but the '51 is not straighforward at all... Jan Waclawek |
| Topic | Author | Date |
| basic question on 8051 eprom access | 01/01/70 00:00 | |
| Read the manual... | 01/01/70 00:00 | |
| bible time | 01/01/70 00:00 | |
| bible time | 01/01/70 00:00 | |
| more memory | 01/01/70 00:00 | |
| reply | 01/01/70 00:00 | |
| in that case | 01/01/70 00:00 | |
| cutting down chip count | 01/01/70 00:00 | |
| not "just" when a beginner | 01/01/70 00:00 | |
| page switching etc. | 01/01/70 00:00 | |
| that was not it | 01/01/70 00:00 | |
| Please, explain | 01/01/70 00:00 | |
| serial and display | 01/01/70 00:00 | |
| I2C is up to 1MHz... | 01/01/70 00:00 | |
| MMC real tests | 01/01/70 00:00 | |
| Why not | 01/01/70 00:00 | |
| ... | 01/01/70 00:00 | |
| I suspect | 01/01/70 00:00 | |
| el chepo | 01/01/70 00:00 | |
| even cheaper | 01/01/70 00:00 | |
| a word on Flash | 01/01/70 00:00 | |
| flash | 01/01/70 00:00 | |
| here you go | 01/01/70 00:00 | |
Thanks Erik | 01/01/70 00:00 |