• MOVX a,@R0 vs a,@DPTR
    Dear Sir/Madam; Hi How can I force the compiler to using MOVX a,@R0/1 (8Bit address) vs 16bit external memory access. Best Regards
  • Dual DPTR
    Hi I want to use dual DPTR on my 89c669 from Philips. When i insert the pragma #pragma modp2 I get this error(s) *** ERROR L127: UNRESOLVED EXTERNAL SYMBOL SYMBOL: ?C?STRCPYP2 MODULE: ....
  • error when using MODA2 option (Dual Dptr) at89s8252 and interrupt
    copying error with memcpy when interrupt timer 1 is enable ! keil c51 v7.00 this is the start of timer 1 interrupt: DPH, DPL, DPH1, DPL1 , WMCON are correctly saved.... ; FUNCTION T1_int (BEGIN...
  • Dual "far" DPTRs
    C51 7.0 supports dual DPTRs, at least in some major library routines. It also supports an extended DPTR. I'd like to be able to do both at once, to do block moves from far xdata to far xdata. It doesn...
  • Dual DPTR in the Debuger
    Hi! I use a T89C51CC01 from Atmel WM, I would like to use the dual dptr feature on my program. When I run the Debugger, i can't switch the DPTR. In the µC manual, it says that we must set the DPS...