??? 07/20/06 00:46 Read: times |
#120633 - Google says Responding to: ???'s previous message |
Assuming It can work (Already answered)
Google has the data sheet 8155 8052 Comment ------------------------------------------------------------ Reset A Port pin High rst, low normal ALE ALE AD0-7 P0-7 RD RD (3.7) WR WR (3.6) IO/M A Port pin High = I/O, low = RAM CE A Port pin Low = selected Thoose are the Key pins. Make sure Reset has been been toggle. Note it is backwards from the 52. So you can not just hook it to reset. Now assuming All pins are connected. Your address is not correct. CE must be low. |