Modify the display multiplexer/decoder design of Example 8.2 on page 323 to provide an 8-character alphanumeric scanned display, with eight 6-bit character code inputs. Use the ROM described in Exercise 8.11 to decode the character codes.
Example 8.2
Develop a Verilog model of a display multiplexer and decoder for the 4-digit 7-segment display shown in Figure 8.9. The circuit has four BCD inputs. The decimal point for the left-most digit should be lit, and the remaining decimal points not lit. The system clock has a frequency of 10MHz.
Exercise 8.11
A 16-segment LED display, shown in Figure 8.43, can display alphabetic and numeric characters. Develop a circuit schematic and a Verilog model of a display decoder and driver to drive a 16-segment common anode LED display, given a 6-bit character-code input. Use a 64 × 16-bit ROM to decode the input. You needn't determine the ROM content for this exercise.
