| ??? 04/09/01 21:18 Read: times |
#10703 - RE: testing 8255 |
The 8255 is usually memory mapped into data memory space on the 8052. The 8255 is addressed with the @DPTR instructions.
The 8255 requires an initialisation word to set its input/output charadteristics. Its not easy for a beginner to design their own control word. Intel's app note has a useful table of output combinations. Steve |
| Topic | Author | Date |
| testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
| RE: testing 8255 | 01/01/70 00:00 | |
RE: testing 8255 | 01/01/70 00:00 |