| ??? 11/30/08 16:27 Read: times |
#160438 - It seems feasible... Responding to: ???'s previous message |
On my prototype with P89V51RD2, 8-bit DS12887 RTC, 12-bit ADC, 16-bit IDE + CF card on IDE-CF adapter, tested each chip I/O one after another (but need to write more code for faster, multichannel A/D and write to disk).
ADC and IDE R/W done by bit-banging RD and WR pins. Porting pjrc.com's IDE code was easy but had to remove hardware reset to save a port pin (reset already done at startup by external reset circuit). Also saved port pins and got more lower bandwidth I/O with builtin SPI + 74HC165 + '595. |
| Topic | Author | Date |
| is it possible to mix direct connect & mem. mapped | 01/01/70 00:00 | |
| Probably,,, | 01/01/70 00:00 | |
| naaaah... see bible | 01/01/70 00:00 | |
| If your code is internal ... | 01/01/70 00:00 | |
| It seems feasible... | 01/01/70 00:00 | |
| I wouldn't presume to tell you what to do ... | 01/01/70 00:00 | |
| ALE off SFR | 01/01/70 00:00 | |
I don't know what YOUR MCU does, but ... | 01/01/70 00:00 |