• using 2nd DPTR in DS87C520
    Hi I want to use the second data pointer available in Dallas, since i am reading my port and then immediatly writing this data to external ram.All this has to be done in ISR in 10us. I am using in line...
  • clarity of dual dptr code
    to make an assembly routine clearer to read, I want to indicate which of the 2 dptrs are used in each instance. One is fetch, another is store. So, to achieve that, I insert the following: fptr...
  • 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: ....
  • Wrong DPTR value
    Dear Sirs, The C code in my project is: TaskStruct xdata * data pTask; data unsigned char Task; ... *pTask->ProcID=Task; causes the assembly code MOV A,pTask+1 ADD A,#06 LCALL 4629...
  • debugging with multiple dptrs?
    Has anyone had problems seeing multiple dptrs in the regs window during hardware debugging? We have two memory mapped dptrs. When I run the debug under Keil simulation, I can see both dptrs in the regs...