| ??? 04/23/05 18:27 Read: times |
#92239 - You can do both Responding to: ???'s previous message |
You can use the data bus for both uses, as long as you are not using code memory. You can even toggle /RD and /WR they are just port pins. When you are done set everyting bac to high. And use Xdata as normal. If you have Memory in the XDATA space do not use it during the transfer (You MAY need ASM here).
If you have a CPU with a static core, that can clock to DC, maybe. You will need a seprate oscilator. The startup of the internal may not be clean (that is why reset in not an edge). Forget any other timing, including RS-232. The issues make it look iffy. |
| Topic | Author | Date |
| Mot Type I'face, /DTA delay help - 89C52 | 01/01/70 00:00 | |
| Just use the ports | 01/01/70 00:00 | |
| Not enough IO ports! Must Multiplex | 01/01/70 00:00 | |
| I agree - Just Bit Bang it. | 01/01/70 00:00 | |
| Eh?! | 01/01/70 00:00 | |
| You can do both | 01/01/70 00:00 | |
Thanks, will 'bit bash' | 01/01/70 00:00 |