1. The W register holds a packed BCD number 68H. Write instructions to mask high-order four bits <7-4>, preserve the logic levels of bits

   

1. The W register holds a packed BCD number 68H. Write instructions to mask high-order four bits , preserve the logic levels of bits , and save the result in data register REG1 with the address 0x01. a. Draw flowchart. b. Convert the flowchart to PIC18F assembly language program starting at address 0x100.