How would I locate a structure to coincide with the beginning of SFR space for the 8051? address 0x80 of directly assessible data memory.
We are using a core8051 (inside an FPGA), and the core8051 lets us map external events to SFR space. So it would be very convienent to define a structure which allows us to more easily access all of SFR space. (we take care not to "stomp" on already defined SFR registers.
How can I do that?
Thanks
Then a FIFO may be the fastest way to read the data. And, you don't need to worry with indexing thru SFRs. For example:
sfr FIFO_RESET = 0x??; sfr FIFO_READ = 0x??; unsigned char xdata buffer [0x2000]; void func (void) { unsigned char xdata *bp; FIFO_RESET = 1; for (bp=buffer; bp < &buffer[sizeof(buffer)]; *bp++ = FIFO_READ); }
Jon