| ??? 11/29/07 08:33 Read: times |
#147545 - How is the 8255 connected? Responding to: ???'s previous message |
Justin Norman said:
If i expand the IO with an 8255 ... What will be the new addresses? Again, without knowing how you've connected the 8255 to the microcontroller, it is impossible to answer that! Is it memory-mapped into XDATA? Or are you just controlling it with port pins? Or what? |
| Topic | Author | Date |
| Q for Richard Erlacher | 01/01/70 00:00 | |
| Is only Richard allowed to reply, then? | 01/01/70 00:00 | |
| Not afraid! | 01/01/70 00:00 | |
| How is the 8255 connected? | 01/01/70 00:00 | |
| I'll just go look at the user page. | 01/01/70 00:00 | |
| You mean this? | 01/01/70 00:00 | |
| XDATA | 01/01/70 00:00 | |
| Memory mapped! | 01/01/70 00:00 | |
| Sarcasm not in short supply! | 01/01/70 00:00 | |
| questions with questions | 01/01/70 00:00 | |
| I am just a lowly noob... | 01/01/70 00:00 | |
| memory mapped antique - beware ... | 01/01/70 00:00 | |
| if we do the usual guesswork... | 01/01/70 00:00 | |
| Spanish | 01/01/70 00:00 | |
| Your question is vague and confusing! | 01/01/70 00:00 | |
| Thankyou Richard and Andy. | 01/01/70 00:00 | |
No worries, mate! | 01/01/70 00:00 |