I have 8051 with 2 DPTR, SFR register to switch data banks(32Kb/16Kb)... Both DPTRs used to increment read/write pointers. I need correct 32bit address increment over all accessible memory. How to widen DPTR to work with 32 bit address?
The size of the DPTRs (and all other SFRs) is fixed by the hardware - you cannot change it except by changing to different hardware!
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