• Problem with C51 v5.5 and Atmel Dual Pointers
    Hi, all. I seem to have a problem with C51 (DOS) v5.50 and the Atmel AT89S53. The program is all C (no assembler) and accesses different parts of XDATA memory from both the normal main program...
  • Problam with "C51 V5.5 Compiler" under "Windows XP"
    Hi, In our develop system We use "MS-DOS C51 Keil Compiler V5.5" , with "Sentinel Pro" . We used this system under Windows 2000 for long time. In order to backup the system We installed it to pc...
  • Fatal error while using SRC directive C51 V5.5
    Dear Sir, While writing inline assembly using #pragma asm & #pragma endasm I am getting Fatal Error:PARSING INVOKE-/#PRAGMA-LINE RESPECIFIED OR CONFLICTING CONTROL.I set #pragma src on starting...
  • Dual data pointer registers problem
    Hi there, I run the codes below in uVision3 V3.30 in order to see the effect of AUXR1 register in switching DPTR0 and DPTR1. I choose the device as AT89S51 which provides the dual DPTR function...
  • Dual Data Pointers
    I have upgraded to C51 V6.10 and now do not have any dual data pointer support. The library files C51C.LIB etc do not have the functions COPYAMD, STRCPYAMD etc. I am not using an evaluation version...