| ??? 11/15/08 09:06 Modified: 11/15/08 09:55 Read: times |
#160047 - Some can! [edited] Responding to: ???'s previous message |
Some derivatives do add the facility to do this; eg,
The W77E58 Datasheet, Section 6, "Functional Description", on page 7, said:
The W77E58 is an 8052 compatible device that gives the user the features of the original 8052 device,
but with improved speed and power consumption characteristics. It has the same instruction set as the 8051 family, with one addition: DEC DPTR (op-code A5H, the DPTR is decreased by 1). http://www.keil.com/dd/docs/d...w77e58.pdf Of course, the fact that it requires this new OpCode means that you have to have tools that specifically support it... Otherwise, you can simply follow Michael's suggestions Update: See this thread about use - including Winbond's - of the "undefined" A5 opcode: http://www.8052.com/forum/read/88953 |
| Topic | Author | Date |
| Doubt on DPTR | 01/01/70 00:00 | |
| DPTR Is Just Fine | 01/01/70 00:00 | |
Some can! [edited] | 01/01/70 00:00 |