| ??? 03/18/05 10:14 Modified: 03/18/05 10:14 Read: times |
#89920 - truth table Responding to: ???'s previous message |
Try to correct this table:
control address data memory program memory ------------------------------------------------------ 0 0000-7FFF RAM ROM 0 8000-FFFF ROM ROM 1 0000-7FFF ROM ROM 1 8000-FFFF RAM ROM Now replace address by only A15, data memory by /RD=0, program memory by /PSEN=0; RAM by /RAM_OE=0 and /ROM_OE=1; ROM by /RAM_OE=0 and /ROM_OE=1, and you get a truth table which you simply convert to combinatorial logic. Jan Waclawek |
| Topic | Author | Date |
| Interfacing to EPROM/RAM | 01/01/70 00:00 | |
| Yes you can...but | 01/01/70 00:00 | |
| do some reading on how the 8051 works | 01/01/70 00:00 | |
| exact hardware | 01/01/70 00:00 | |
| Yes but.... | 01/01/70 00:00 | |
| its mentioned | 01/01/70 00:00 | |
| Actually it isn't | 01/01/70 00:00 | |
| sorry for that | 01/01/70 00:00 | |
| xor | 01/01/70 00:00 | |
| truth table | 01/01/70 00:00 | |
solution | 01/01/70 00:00 |