8 layers304.8 × 190.5 mm
4 layers127 × 88.9 mm
A 65(C)02 WorkBench Computer
- Size
- 127 × 88.9 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 38
- Nets
- 129
- Pads
- 295
- Tracks, vias
- 557, 182
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Nov 2021
- Updated
- 1 Sep 2026
Overview
Debug is an open-source printed circuit board by WolfNet-Computing, from the WolfNet-Computing/WolfNet-65C02-WBC repository on GitHub. It is a 4-layer board of 127 × 88.9 mm with 38 parts on 129 nets, routed with 557 tracks and 182 vias.
It is built around the HDSP-7803, 74HCT04D and 74HCT374D, with the 74HCT74D among its other parts. Its parts include 15 ICs, 9 resistors, 8 diodes, 4 switches and 1 connector.
Main components
4
HDSP-7803
DIP-100.3 1 105mW 12.7mmx7.62mmx6.09mm 7 Segment Common Cathode Green DIP-10 Abolished Device ROHSBroadcom LimitedLED Segment Displays
74HCT04D
SO-14-40℃~+125℃ 1 19ns@4.5V,50pF 2V 2uA 3.7V 4.5V~5.5V 400mV 4mA 4mA 6 74HCT 800mV SO-14 Inverters ROHSNexperiaInverters
74HCT374D
SOIC-20-300mil-40℃~+125℃ 1 3.5pF 32ns@4.5V,50pF 4.5V~5.5V 44MHz 4uA 5ns 6mA 6mA 74HCT Series 7ns 8 D-Type Rising Edge Tri-State SOIC-20-300mil Flip Flops ROHSNexperiaFlip Flops74HCT74D
SOIC-14-40℃~+125℃ 1 2 3.5pF 3ns 4.5V~5.5V 40uA 44ns@4.5V,50pF 4mA 4mA 59MHz 5ns 74HCT Series Asynchronous Complementary D-Type Rising Edge Set and Reset SO-14 Flip Flops ROHSNexperia74 Series
README
README.mdParts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
| 6 | HDSP-7803 | Display_7Segment:HDSP-7801 | U2, U5, U8, U11, U13, U15 |
| 6 | MC14495P1 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U1, U4, U7, U10, U12, U14 |
| 1 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9 |
| 1 | 74HCT04 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U6 |
| 1 | 74HCT374 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U3 |
| 1 | 74HCT74 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U9 |
| 1 | Expansion_Connector | Connector_PinHeader_2.54mm:PinHeader_2x19_P2.54mm_Horizontal | J1 |
| 1 | IRQ | LED_THT:LED_D5.0mm | D5 |
| 1 | LOGO | WolfNet:WolfNet-Logo_silkscreen | G*** |
| 1 | NMI | LED_THT:LED_D5.0mm | D6 |
| 1 | PHI1 | LED_THT:LED_D5.0mm | D7 |
| 1 | PHI1/Step | Button_Switch_THT:SW_Slide_1P2T_CK_OS102011MS2Q | SW4 |
| 1 | PHI2 | LED_THT:LED_D5.0mm | D8 |
| 1 | RDY | LED_THT:LED_D5.0mm | D1 |
| 1 | RW | LED_THT:LED_D5.0mm | D3 |
| 1 | Reset | LED_THT:LED_D5.0mm | D4 |
| 1 | Run | Button_Switch_THT:SW_Slide_1P2T_CK_OS102011MS2Q | SW3 |
| 1 | SI/SC | Button_Switch_THT:SW_Slide_1P2T_CK_OS102011MS2Q | SW2 |
| 1 | Step | Button_Switch_THT:SW_Push_2P1T_Toggle_CK_PVA1xxH1xxxxxxV2 | SW1 |
| 1 | Sync | LED_THT:LED_D5.0mm | D2 |
Questions
How big is the Debug PCB?
It measures 127 × 88.9 mm and has 4 copper layers, 4.69 mm thick.
What parts does the Debug use?
38 parts, built around the HDSP-7803, 74HCT04D, 74HCT374D and 74HCT74D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Debug KiCad files?
From the WolfNet-Computing/WolfNet-65C02-WBC repository on GitHub, at the commit this page was made from: the board is Debug/Debug.kicad_pcb and its schematic Debug/Debug.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Debug design in my own project?
Its repository states no licence, so its author keeps all rights: ask WolfNet-Computing before reusing the design.
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