| ??? 12/16/08 14:24 Read: times |
#160974 - complier issue |
Hello
I am using keil complier. I have piece of code which is pointing to external memory but DPTR is incremeting in assembly code c- code #define SHAR0 0x2007 #define SHAR1 0x2008 #define SHAR2 0x2009 #define SHAR3 0x200a #define SHAR4 0x200b #define SHAR5 0x200c volatile uint16 xdata *wiznet; wiznet= ((uint16 xdata *)SHAR5); SIL_WRITE(wiznet,0x01); ASM code for the above C-code (keil generated) 0896 90 00 04 MOV DPTR,#0004H 0899 74 20 MOV A,#20H 089B F0 MOVX @DPTR,A 089C A3 INC DPTR 089D 74 0C MOV A,#0CH 089F F0 MOVX @DPTR,A 08A0 90 00 04 MOV DPTR,#0004H 08A3 E0 MOVX A,@DPTR 08A4 FE MOV R6,A 08A5 A3 INC DPTR 08A6 E0 MOVX A,@DPTR MOV R6,A 08DB A3 INC DPTR 08DC E0 MOVX A,@DPTR 08DD AA 06 MOV R2,06H 08DF F9 MOV R1,A 08E0 7B 01 MOV R3,#01H 08E2 7D 03 MOV R5,#03H 08E4 12 0B 8D LCALL 0B8DH This asm code is generating But iam not able to understand why DPTR is incrementing to next location? I mean to say i want to load the data in 0x2007 but it is getting and loading in 0x2008 please assist anybody for this thanku for replies Geetha |
| Topic | Author | Date |
| complier issue | 01/01/70 00:00 | |
| What is SIL_WRITE? | 01/01/70 00:00 | |
| Incomplete | 01/01/70 00:00 | |
| just a guess | 01/01/70 00:00 | |
| cross posted at SILabs forum | 01/01/70 00:00 | |
| What do you expect... | 01/01/70 00:00 | |
| complier issue | 01/01/70 00:00 | |
| Extension fron one to two bytes | 01/01/70 00:00 | |
| You are right Sir.. | 01/01/70 00:00 | |
| RTFM | 01/01/70 00:00 | |
| Erik, I meant wiznet registers!! | 01/01/70 00:00 | |
| Big picture | 01/01/70 00:00 | |
I understand.. | 01/01/70 00:00 |