Inc16 Chip
1. Inc16 Chip
16-bit Incrementer chip is a special kind of Adder, used to increment a 16-bit input by 1.
2. Truth Table
| Input (16-bit) | Output (16-bit) | Overflow |
|---|---|---|
0000000000000000 (0) | 0000000000000001 (1) | 0 |
0000000000000001 (1) | 0000000000000010 (2) | 0 |
0000000000000010 (2) | 0000000000000011 (3) | 0 |
0111111111111111 (32767) | 1000000000000000 (32768) | 0 |
1111111111111110 (65534) | 1111111111111111 (65535) | 0 |
1111111111111111 (65535) | 0000000000000000 (0) | 1 |
3. Implementation (HDL)
The function in the above abstraction can help in the implementation of 16-bit Incrementer Chip.
You can use the Add16 Chip you’ve built earlier.
Remember that 1 in 4-bit binary (say) is 0001.
(Representation of the Inc16 Chip in HDL using previous gates.)
CHIP Inc16 {
IN in[16];
OUT out[16];
PARTS:
Add16(a=in, b[0]=true , b[1..15]=false, out=out);
}