| ??? 10/03/08 16:09 Read: times |
#158816 - Used Am29F040 Responding to: ???'s previous message |
It is an used one that I erased and reprogrammed myself with known data (not random) and a VP-480 programmer. I will check wiring again; dump it from SBCMon and check against original data; try with another freshly erased chip.
No P0 pullups, only connected to latch and 7 chips (EPROM containing SBCMon, RAM, FLASH, NVRAM, RTC, I2C controller, LCD). I rewrote the code for the sake of clarity before posting here, and forgot to POP ACC later. |
| Topic | Author | Date |
| 29F0x0 flashing problem | 01/01/70 00:00 | |
| Is it a new or used Am29F040? | 01/01/70 00:00 | |
| Used Am29F040 | 01/01/70 00:00 | |
| doesn't the programmer you use... | 01/01/70 00:00 | |
| problems gone | 01/01/70 00:00 | |
good news - good job! :-) | 01/01/70 00:00 |