| ??? 08/14/08 05:46 Read: times Msg Score: -1 -1 Answer is Wrong |
#157484 - ROM Responding to: ???'s previous message |
Oki's user manual says ROM to be 2764/27128 , and You use 27c256. See pin 27 of ROM - i think micro holds this at hi level, which is A14 line for 27c256. In such case pull out this ROMpin from micro's socket and connect to GND with wire.
regards |
| Topic | Author | Date |
| Dead Micro? | 01/01/70 00:00 | |
| ? RST is tied to Vss through a 10uF tantalum cap | 01/01/70 00:00 | |
| Update | 01/01/70 00:00 | |
| We have to wonder ... | 01/01/70 00:00 | |
| ROM | 01/01/70 00:00 | |
| Continuing... | 01/01/70 00:00 | |
| Why suspect the piggy-back interface? | 01/01/70 00:00 | |
| To: The other Richard | 01/01/70 00:00 | |
Way too easy to fool myself | 01/01/70 00:00 | |
| the datasheet doesn\'t specify the cap | 01/01/70 00:00 |