Multi-Chip
Harvey Mudd College
E198 Research, Spring 2000


The Multi-Chip has four compenents: A Ford Thunderbird light simulator, 3-bit 
static adder, 3-bit domino adder, and 2-bit static multiplier.


[Design Team]
-------------

- Advisor and Ford Thunderbird Light Simulator:

  Professor David Harris

- 3-bit Static Adder:

  Aiyesha Ma
  Tina Wang

- 3-bit Domino Adder:

  David Diaz
  Lance Feagan
  Romanos Fessas

- 2-bit Static Multiplier:

  Michael Aung
  Grant Baxter
  John Benediktsson
  

[Inputs]
--------

- vdd		- Power
- gnd		- Ground

- r		- "right" signal to Thunderbird Lights Simulator
- l		- "left" signal to Thunderbird Lights Simulator
- reset		- reset signal to Thunderbird Lights Simulator

- a2		- Input bit, 2^2, shared by both Adders and Multiplier
- a1		- Input bit, 2^1, shared by both Adders and Multiplier
- a0		- Input bit, 2^0, shared by both Adders and Multiplier

- b2		- Input bit, 2^2, shared by both Adders and Multiplier
- b1		- Input bit, 2^1, shared by both Adders and Multiplier
- b0		- Input bit, 2^0, shared by both Adders and Multiplier

- ph1		-
- ph1b		-
- ph2		-
- ph2b		-
- en		-
- osc		-


[Outputs]
---------

- s5		- 3rd of Left lights for Thunderbird Lights Simulator
- s4		- 2nd of Left lights for Thunderbird Lights Simulator
- s3		- 1st of Left lights for Thunderbird Lights Simulator
- s2		- 1st of Right lights for Thunderbird Lights Simulator
- s1		- 2nd of Right lights for Thunderbird Lights Simulator
- s0		- 3rd of Right lights for Thunderbird Lights Simulator

- y2a		- Output bit, 2^2, for 3-bit Static Adder
- y1a		- Output bit, 2^2, for 3-bit Static Adder
- y0a		- Output bit, 2^2, for 3-bit Static Adder
- couta		- Carry out bit for 3-bit Static Adder

- y2d		- Output bit, 2^2, for 3-bit Domino Adder
- y1d		- Output bit, 2^1, for 3-bit Domino Adder
- y0d		- Output bit, 2^0, for 3-bit Domino Adder
- coutd		- Carry out bit for 3-bit Domino Adder

- y3m		- Output bit, 2^3, for 2-bit Multiplier
- y2m		- Output bit, 2^2, for 2-bit Multiplier
- y1m		- Output bit, 2^1, for 2-bit Multiplier
- y0m		- Output bit, 2^0, for 2-bit Multiplier


[Components]
------------

- Ford Thunderbird Light Simulator

  Inputs: Left, Right, Reset, Clk
  Outputs: Left[2:0], Right[2,0]



- 3-bit Static Adder

  Inputs: A[2:0], B[2:0]
  Outputs: Y[2:0], Carry_out

  This adder takes in two 3-bit numbers and performs the add function resulting 
  in a 4-bit output. The bottom 3-bits are represented by S[2:0] and the 4th bit is
  represented by Carry_out.

  Addition is performed using the ripple-carry method.

  NOTE: Some of the elements in the layout is "off-grid" and may cause it to not 
  work properly.

- 3-bit Domino Adder

  Inputs: A[2:0], B:[2:0]
  Outputs: Y[2:0], Carry_out



- 2-bit Multiplier

  Inputs: A[1:0], B[1:0], vdd, gnd
  Outputs: Y[3:0]

  This multiplier takes in two 2-bit numbers and performs a multiplication 
  resulting in a 4-bit output.