6502.org

Posted: **Sat Apr 17, 2021 11:44 pm**

BillG wrote:

Don't the other methods also need to do the "AND $0F"?

Also, if we do both nybbles in a byte, the cost of the table is only an additional 8 bytes per instance.

And don't forget the efficient nybble swap at http://6502.org/source/general/SWN.html, only 8 bytes and 12 clock cycles, and no variables, no stack usage, no look-up table, no X or Y usage. It uses only the accumulator and status register.

6502.org

short binary to hex char using bcd mode

Re: short binary to hex char using bcd mode