| ??? 04/24/08 04:14 Modified: 04/24/08 04:46 Read: times |
#153919 - Try the datasheet Responding to: ???'s previous message |
You should look closely at your part's data sheet. The description is right there above Figure 12. I copy the words here as a quote:
Indirect addressing. In indirect addressing
the instruction specifies a register which contains the address of the operand. Both internal and external RAM can be indirectly addressed. The address register for 8-bit addresses can be R0 or R1 of the selected register bank, or the Stack Pointer. The address register for 16-bit addresses can only be the 16-bit “data pointer” register, DPTR. So go ahead and use the MOVX @Ri instructions for the XRAM addresses 00h-FFh. For higher addresses you will have to resort to using DPTR. Michael Karas |
| Topic | Author | Date |
| movx @ri,A in uPSD3200 micros | 01/01/70 00:00 | |
| Try the datasheet | 01/01/70 00:00 | |
| Not the (complete) answer? | 01/01/70 00:00 | |
| internal/external memory in uPSD32xx | 01/01/70 00:00 | |
| Thanks a lot | 01/01/70 00:00 | |
I had the 52 pin version, too... | 01/01/70 00:00 |