EuroTwo CPU

Downloads

EuroTwo v0.002 Manual [PDF]

EuroTwo v0.004 Manual [PDF]

EuroTwo OnePiece v0.004.0 Schematic [PDF] (untested)

Arrangement

Boards

1 Bit Full Adder from 4Bit Relay Adder

4 Bit Controlled Inverter from 4Bit Relay Adder

9 Bit AND

Register 2 Bit

MUX 3 Select Bits, 1 Data Bit

DEC 1 Select Bit, 4 Data Bits

Counterregister 2 Bits

Clock

8 Bit Monitor

1 Page RAM

ROM

Logo

1Bit-FullAdder

The 1Bit-FullAdder sums 3 (A,B,C) inputs and outputs a sum bit and a carry bit.

Therefore 8 relays are used. I know I can build it from 6. But for didactic reason I decided to use 8. For details see the schematic.

Schematic

1BitFullAdder_rev1 [PDF]

BOM

Designator	Package	Quantity	Designation
D7,D11,D12,D10,D6,D9,D4,D5	D_A-405_P10.16mm_Horizontal	8	1N4007
R30,R2,R17,R23,R32,R3,R1, R13,R29,R21,R20,R26,R16,R14, R8,R18,R25,R15,R24,R31, R5,R28,R27,R19,R22,R9	R_0603_1608	25	330R
D14,D13,D18,D29,D21,D30, D16,D25,D22,D24,D33,D34,D2,D8, D20,D31,D3,D23,D28,D26,D32, D17,D19,D27,D15	LED_1206_3216	25	blue with 16mA, 5V
R4,R6,R7,R10,R11,R12	R_0603_1608	6	not mounted
C1,C2	CP_Elec_6.3×5.4	2	47uF
C3,C4,C5	C_0805_2012	3	1000nF Keramik
K1,K2,K3,K4,K5,K6,K7,K8	SRD-C	8	SANYOU SRD Form-C

4Bit-Controlled-Inverter

The 4Bit-Controlled-Inverter board is able to invert 4 bits. The board is enabled by the Enable-Inverter-Switch on the ControlPanel. It also indicates the input bits and the output bits by LEDs.

Schematics

4BitControlledInverter_rev1 [PDF]

BOM

Designator	Package	Quantity	Designation
D1,D2,D3,D4,D5,D6,D7,D9, D10,D11,D12,D13,D14,D15, D16,D17,D18,D19,D20,D22,D31	LED_1206_3216	21	blue at 16mA, 5V
R1,R2,R3,R4,R5,R6,R7,R9, R10,R11,R12,R13,R14,R15, R16,R17,R18,R19,R20,R22,R21	R_0603_1608	21	330R
C1,C2	CP_Elec_6.3×5.4	2	47uF
C3,C4,C5	C_0805_2012	3	100nF
D8,D21,D23,D24,D25,D26, D27,D28	D_A-405_P10.16mm_Horizontal	8	1N4007
K1,K2,K3,K4,K5,K6,K7,K8	SRD-C	8	SANYOU SRC-FormC

Logo

This board is made of 120 LEDs just for this board. It is the projectlogo with through-pcb illumination.

Schematics

left

BOM

Designator	Package	Quantity	Designation
D*	LED_1206_3216	120	blue at 16mA, 5V
R*	R_0603_1608	120	330R
C1,C2	CP_Elec_6.3×5.4	2	47uF
C3,C4,C5	C_0805_2012	3	100nF

MUX 1-4

Schematics

mux-1-4_rev1.pdf

DEC 3 SelectBits

Schematics

DEC3_rev1 [PDF]