| ??? 03/04/05 15:19 Read: times |
#89115 - in that case Responding to: ???'s previous message |
The bitmaps are encoded inside the main app.I'm just at the beginning of my project but i think this will become very large at the end.
In that case what you need is some ROM/PROM/Flash as DATA memory, that way no paging will be needed. If the 256 bytes of RAM inside the chip is not enough I suggest you have a look at the Philips P89C66x series for up to 8k of internal RAM. That way you need no RAM decoding at all since the chip will access DATA externally once the internal RAM size is exceeded. Of course, you can go "traditional", with an external 8k RAM, an external ROM/PROM/Flash and a handful of chips or a PLD to decode memory access. Erik |
| 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 |