| ??? 01/26/02 07:04 Read: times |
#19123 - RE: port 0 and external memory use |
To Thomas and Erik
The note on pullup resistor is right on. You have no idea how much debugging I had to do to learn this one. On a side note one time I had a series of data errors from a ram chip. It turned out that the power pin got missed on the board design and the dam ram chips were getting their power from the data bus. The smaller the value of pullup the less the error. Jeff |
| Topic | Author | Date |
| port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
| RE: port 0 and external memory use | 01/01/70 00:00 | |
RE: port 0 and external memory use | 01/01/70 00:00 |