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DG Nova CPU Tester

ForgottenMachines·Data-General-Nova·DG Nova CPU Tester/DG Nova CPU Tester.kicad_pcb

DG Nova CPU Tester PCB layout, top view — open source RP2040/RP2350 board by ForgottenMachines

About the DG Nova CPU Tester PCB

DG Nova CPU Tester is an open source RP2040/RP2350 PCB design by ForgottenMachines, published on GitHub. It is a 2-layer board measuring 426.8 × 140.3 mm, with 124 components from 58 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the 74HC14. By type, the board carries 31 resistors, 29 diodes, 23 connectors, 16 LEDs, 5 jumpers and 5 capacitors.

Main components on the DG Nova CPU Tester

74HC14Pico

DG Nova CPU Tester bill of materials (BOM)

124 components, 58 distinct parts.

QtyPartRefs
1
74HC14
U1
1
Pico
U2
1
Front Panel Socket - Backside
Front Panel Socket1
2
~
J2, J3
1
ATX Power Port
J4
1
Front Panel Card Edge
J5
1
MBO
J6
1
MEM
J7
1
Data Channel
J8
1
Front Panel Controls
J9
1
Programmed I/O
J10
1
CPU Option Inputs
J11
1
Data Channel
J12
1
Program Interrupt
J13
1
System Control
J14
2
Slot_02x50_Odd_Even
J15, J16
1
CPU Option Outputs
J17
1
MEM Control Outputs
J18
1
Logic 8 CH
J19
1
Logic 8 CH
J20
Show 38 more
QtyPartRefs
1
Arduino Anolog Pins
J21
1
Arduino Digital Pins
J22
1
Arduino Digital Pins
J23
3
3v3
3v1, 3v3, 5vToBackBoard1
1
MountingHole
FPIMAGE1
3
Vipass Ammeter
JP1, JP4, JP5
1
Entrex ~{M CON DATA}
JP2
1
Entrex ~{M CON INST}
JP3
1
XK-001
MES1
1
Arduino Mega Reset
SW1
1
Power Swtich
SW2
1
Pico Reset
SW3
1
SW_DIP_x04
SW4
1
Entrex Backplane S01B53 to S13B53
TP1
1
ATX PWR_OK
TP2
1
Teensy4.1
Teensy 4.1
1
Arduino_Mega2560_Shield
XA1
6
LED Bar 10
BAR1, BAR3, BAR5, BAR7, BAR8, BAR15
1
LED Bar 10
BAR2
5
LED Bar 10
BAR4, BAR6, BAR9, BAR10, BAR16
1
LED Bar 10
BAR11
1
LED Bar 2
BAR12
2
LED Bar 4
BAR13, BAR14
6
1N4004
D1, D2, D3, D4, D5, D6
22
LED
D7, D8, D9, D10, D11, D12, D13, D14 +14
1
D_Schottky
D29
1
~{PL} Backplane Cap
C1
1
~{CON RQ} Backplane Cap
C2
3
C
C3, C4, C5
2
1k
R1, R6
2
10k
R2, R5
2
4.7k
R3, R4
9
R_US
R7, R8, R9, R10, R11, R12, R13, R14 +1
9
R_Network09_US
RN1, RN3, RN5, RN7, RN8, RN11, RN13, RN14 +1
1
R_Network08_US
RN2
3
R_Network07_US
RN4, RN6, RN9
2
R_Network05_US
RN10, RN16
1
R_Network06_US
RN12

DG Nova CPU Tester design files

The KiCad project lives in the ForgottenMachines/Data-General-Nova repository on GitHub; these links point at the commit this page was built from.

DG Nova CPU Tester: common questions

What microcontroller does the DG Nova CPU Tester use?

The DG Nova CPU Tester is built around the Pico, from the RP2040/RP2350 family.

How big is the DG Nova CPU Tester PCB?

The DG Nova CPU Tester measures 426.8 × 140.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DG Nova CPU Tester?

124 components, from 58 distinct parts. The full bill of materials is listed on this page.

Where can I download the DG Nova CPU Tester design files?

From the ForgottenMachines/Data-General-Nova repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the DG Nova CPU Tester design in my own project?

The repository has no license, so all rights stay with ForgottenMachines. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the DG Nova CPU Tester without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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