• inline assembly with C51 v3.20
    On the manual of C51 v3.2, writing and using assembly functions are described and is working successfully. However, there is no clue about the inline assembly on the manual. Does anybody know anything...
  • the unnecessary DPTR re-load in C51
    I have found the following optimization problem in C51 v7.06a: the access to a structure member with offset>0 (XDATA) causes the unnecessary DPTR reload (and computing). There was no such problem in C51...
  • 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: ....
  • C51 Regarding generic pointers and the use of 2 DPTRs
    I am writing code that requires a fair amount of pointer arithmetic and manipulation. The C51 compiler appears to generate lots of generic pointers (much too my dismay). Is there any way to use the built...
  • Can not find RTOS.LIB and RTOS_config.c files in CMSIS V3.20 release package
    I recently downloaded the latest STM32F4 Peripheral library, STM32F4xx_DSP_StdPeriph_Lib_V1.3.0. The library contains peripheral driver and CMSIS V3.20 which includes CMSIS-RTOS V1.02. In the CMSIS documentation...