| ??? 11/25/08 13:56 Read: times |
#160293 - you are mixing RAM and ROM and .... Responding to: ???'s previous message |
... that is where your problem comes from.
If I understand you correctly your bootloader is in ROM and you want to run the app from RAM. In that case all you need is an EXTERNAL flip-flop that gates !PSEN to either the RAM or the ROM instead of the negative OR you probably have there now. Erik |
| Topic | Author | Date |
| Bootloader | 01/01/70 00:00 | |
| you are mixing RAM and ROM and .... | 01/01/70 00:00 | |
| Circuit | 01/01/70 00:00 | |
| Follow up the reply | 01/01/70 00:00 | |
| rework the board so that ... | 01/01/70 00:00 | |
| How to rework the board? | 01/01/70 00:00 | |
| I give up | 01/01/70 00:00 | |
| Don't Give Up... | 01/01/70 00:00 | |
| two ways | 01/01/70 00:00 | |
| a sample | 01/01/70 00:00 | |
| StartUp Code | 01/01/70 00:00 | |
| I have heard that ... | 01/01/70 00:00 | |
| this is a forum for help with problems ... | 01/01/70 00:00 | |
| Thank Erik,.. | 01/01/70 00:00 | |
| Dual C Programs | 01/01/70 00:00 | |
| Dual C Programs | 01/01/70 00:00 | |
| Be Very Careful | 01/01/70 00:00 | |
| Be Very Careful | 01/01/70 00:00 | |
BEWARE | 01/01/70 00:00 | |
| please do not .... | 01/01/70 00:00 | |
| Upload Image... | 01/01/70 00:00 | |
| That's not the way... | 01/01/70 00:00 | |
| Von Neumann - Interrupt problem | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| Interrupt problem | 01/01/70 00:00 | |
| Erik's advice? | 01/01/70 00:00 | |
| How to use the code? | 01/01/70 00:00 | |
| Strong Suggestion..... | 01/01/70 00:00 |