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Hi, I used RDC R8032TT MCU. Can any one help me to use dual datapoint (DPL, DPH, DPL1, DPH1) in C code? So that I can use the faster version of 'memcpy', 'memmove，, 'memcmp，, 'strcpy，,'strcmp'. I had tried use "#pragma modp2". But once I used it, my program is not workable. Thanks a lot.
Best Regards, Roger
"I used RDC R8032TT MCU ... I had tried use '#pragma modp2'
Are you sure that MODP2 is compatible with your particular chip?
See: http://www.keil.com/support/man/docs/c51/c51_modp2.htm
Note that there are also other directives to enable other types of multiple-DPTR support - see: http://www.keil.com/support/man/docs/c51/c51_cm_dirlist.htm
"my program is not workable"
That gives virtually no information whatsoever! You need to do some more investigation to determine in what way it becomes "not workable". You can't fix the problem until you know what the problem is - and nobody can help you with no informaion to go on!