rpn128.cvt rpn64.cvt These are my Desk Accessory RPN calculators, respectively for the 128 and the 64. ------------------------------------------------------------------------------ rpn128.cvt: pcrc = 175 170 114 249 172 51 101 155 ; crcsum=1187 rpn64.cvt: pcrc = 105 92 159 232 243 4 24 137 ; crcsum=996