Juku
About the Juku PCB
Juku is an open source PCB design by ddanila, published on GitHub. It is a 2-layer board measuring 310 × 266 mm, with 266 components from 110 distinct parts.
By type, the board carries 106 diodes, 78 resistors, 56 capacitors, 3 crystals and 1 switch.
From the project
Reconstruction of the Soviet/Estonian Juku E5104 processor board as both a physical PCB and a runnable, headless digital model. The project’s distinctive piece is an LVS-style check that compares the structural Verilog connectivity with the machine-readable board model.
Reconstruction of the Soviet/Estonian Juku E5104 processor board as both a physical PCB and a runnable, headless digital model. The project’s distinctive piece is an LVS-style check that compares the structural Verilog connectivity with the machine-readable board model.
- The C emulator and the structural jukutop model boot the real Juku ROM, render the same framebuffer, accept keyboard input, boot EKDOS from the vendored disk images, and reach disk BASIC READY. The deep value-level guard sync/cosimcheck.sh compares jukutop's typed CPU-bus events against the C emulator (cosim). The default…
Juku bill of materials (BOM)
266 components, 110 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | — | CONN_X1 | X1 |
| 1 | — | CONN_X2 | X2 |
| 1 | — | PinHeader_1x02_P2.54mm_Vertical | X7 |
| 4 | — | PinHeader_1x03_P2.54mm_Vertical | E1, E2, E3, E4 |
| 1 | — | PinHeader_1x02_P2.54mm_Vertical | E5 |
| 2 | — | PinHeader_1x04_P2.54mm_Vertical | E13, E14 |
| 1 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | RUNK1 |
| 1 | — | SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | S3 |
| 2 | КД521В | D_DO-35_SOD27_P7.62mm_Horizontal | VD1, VD4 |
| 1 | КС147Г | D_DO-35_SOD27_P7.62mm_Horizontal | VD3 |
| 1 | КС147 | D_DO-35_SOD27_P7.62mm_Horizontal | VD5 |
| 1 | КТ972 | TO-126-3_Horizontal_TabDown | VT1 |
| 1 | КТ315 | TO-92_Inline | VT2 |
| 1 | A:7 ~24cm insulated wire (cut length held) | FACTORY_WIRE_W7 | W7 |
| 1 | A:8 ~19cm insulated wire | FACTORY_WIRE_W8 | W8 |
| 1 | A:10 13.5cm insulated wire | FACTORY_WIRE_W10 | W10 |
| 1 | A:11 ~11.5cm insulated wire (cut length held) | FACTORY_WIRE_W11 | W11 |
| 1 | A:14 ~23cm insulated wire (cut length held) | FACTORY_WIRE_W14 | W14 |
| 1 | A:19 ~9.5cm insulated wire | FACTORY_WIRE_W19 | W19 |
| 1 | A:20 ~6cm insulated wire | FACTORY_WIRE_W20 | W20 |
Show 90 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 16 МГц | Crystal_HC49-U_Horizontal | Z1 |
| 1 | КР580ИК80А | DIP-40_W15.24mm | D1 |
| 1 | КР556РТ4А | DIP-16_W7.62mm | D2 |
| 1 | К561ЛН2 | DIP-14_W7.62mm | D3 |
| 3 | КР580ВА86 | DIP-20_W7.62mm | D4, D29, D107 |
| 1 | КР580ВК38 | DIP-28_W15.24mm | D5 |
| 1 | КР556РТ4 | DIP-16_W7.62mm | D6 |
| 3 | КР1533ЛА3 | DIP-14_W7.62mm | D7, D37, D39 |
| 2 | К155РЕ3 | DIP-16_W7.62mm | D8, D94 |
| 1 | К555ИД7 | DIP-16_W7.62mm | D9 |
| 1 | КР580ВН59 | DIP-28_W15.24mm | D10 |
| 1 | КР580ВВ51А | DIP-28_W15.24mm | D11 |
| 1 | К155ЛА18 | DIP-8_W7.62mm | D12 |
| 1 | К555ТЛ2 | DIP-14_W7.62mm | D13 |
| 2 | К170АП2 | DIP-8_W7.62mm | D14, D32 |
| 7 | К573РФ5 | DIP-28_W15.24mm | D15, D16, D17, D18, D20, D21, D22 |
| 1 | К573РФ6 | DIP-28_W15.24mm | D19 |
| 3 | КР580ВА87 | DIP-20_W7.62mm | D23, D24, D25 |
| 2 | КР580ВВ55А | DIP-40_W15.24mm | D26, D27 |
| 1 | К155ЛН3 | DIP-14_W7.62mm | D28 |
| 2 | КМ555ТМ2 | DIP-14_W7.62mm | D30, D96 |
| 2 | КР531ЛН1 | DIP-14_W7.62mm | D33, D59 |
| 1 | LP5_XOR | DIP-14_W7.62mm | D34 |
| 1 | К155ЛН5 | DIP-14_W7.62mm | D35 |
| 1 | КР531ЛА12 | DIP-14_W7.62mm | D36 |
| 1 | КР531ЛА1 | DIP-14_W7.62mm | D38 |
| 1 | КР531ИЕ17 | DIP-16_W7.62mm | D40 |
| 3 | К555ИР16 | DIP-14_W7.62mm | D41, D42, D43 |
| 5 | К555ИЕ7 | DIP-16_W7.62mm | D44, D45, D46, D47, D106 |
| 4 | КР531КП14 | DIP-16_W7.62mm | D48, D49, D50, D51 |
| 1 | К555КП14 | DIP-16_W7.62mm | D52 |
| 1 | КР531ИД7 | DIP-16_W7.62mm | D53 |
| 3 | КР580ВИ53 | DIP-24_W15.24mm | D54, D55, D57 |
| 4 | К155АГ3 | DIP-16_W7.62mm | D56, D97, D99, D102 |
| 1 | КР580ИР82 | DIP-20_W7.62mm | D58 |
| 24 | 565РУ3Г | DIP-16_W7.62mm | D60, D61, D62, D63, D64, D65, D66, D67 +16 |
| 8 | К565РУ5Г | DIP-16_W7.62mm | D84, D85, D86, D87, D88, D89, D90, D91 |
| 1 | LE4 | DIP-14_W7.62mm | D92 |
| 1 | VG93_FDC | DIP-40_W15.24mm | D93 |
| 2 | К555КП12 | DIP-16_W7.62mm | D95, D101 |
| 1 | К155ЛП11 | DIP-16_W7.62mm | D98 |
| 1 | BUF8287 | DIP-20_W7.62mm | D100 |
| 1 | К555ИЕ10 | DIP-16_W7.62mm | D103 |
| 1 | К170УП2 | DIP-16_W7.62mm | D104 |
| 1 | К155ЛА3 | DIP-14_W7.62mm | D105 |
| 1 | 47,0 | CP_Radial_D5.0mm_P2.00mm | C1 |
| 2 | 560 | C_Disc_D4.7mm_W2.5mm_P5.00mm | C5, C7 |
| 1 | 56 | C_Disc_D4.7mm_W2.5mm_P5.00mm | C6 |
| 1 | 15 нФ | C_Disc_D4.7mm_W2.5mm_P5.00mm | C8 |
| 7 | — | C_Disc_D4.7mm_W2.5mm_P5.00mm | C9, C10, C11, C12, C15, C34, C94 |
| 1 | — | C_Axial_L5.1mm_D3.1mm_P12.50mm_Horizontal | C16 |
| 1 | 120 мкФ | CP_Axial_L18.0mm_D6.5mm_P25.00mm_Horizontal | C17 |
| 1 | 47 мкФ | CP_Axial_L18.0mm_D6.5mm_P25.00mm_Horizontal | C18 |
| 1 | — | C_Axial_L5.1mm_D3.1mm_P10.00mm_Horizontal | C19 |
| 2 | 1,5 нФ | C_Axial_L5.1mm_D3.1mm_P10.00mm_Horizontal | C20, C22 |
| 1 | 24 | C_Disc_D4.7mm_W2.5mm_P5.00mm | C21 |
| 3 | — | CP_Radial_D5.0mm_P2.00mm | C31, C32, C33 |
| 32 | 0,047 | C_Disc_D4.7mm_W2.5mm_P5.00mm | C35, C36, C37, C38, C39, C40, C41, C42 +24 |
| 1 | 4/20 | C_Disc_D7.5mm_W4.4mm_P5.00mm | C73 |
| 1 | 160 | C_Disc_D4.7mm_W2.5mm_P5.00mm | C99 |
| 2 | 2к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R8 |
| 2 | 100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4 |
| 5 | 2к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6, R62, R90, R95 |
| 10 | 1к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11, R12, R13, R14, R29, R31, R38, R63 +2 |
| 2 | 200 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17, R46 |
| 1 | 33к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
| 8 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R19, R79, R80, R81, R82, R83, R84, R85 |
| 1 | 1,5к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R20 |
| 1 | 33к | R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R30 |
| 1 | 1,2к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R32 |
| 1 | 620 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R33 |
| 1 | 13к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R34 |
| 7 | 12к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R39, R61, R100, R102, R105, R107, R108 |
| 6 | 15к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R40, R41, R42, R43, R44, R45 |
| 1 | 20к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R47 |
| 1 | 8,2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R48 |
| 4 | 75 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R49, R50, R51, R52 |
| 4 | 5,1к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R53, R54, R55, R56 |
| 1 | 20 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R57 |
| 3 | 5,1к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R58, R60, R64 |
| 1 | 33к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R59 |
| 1 | 430 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R65 |
| 2 | 4,7к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R67, R86 |
| 1 | 10к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R78 |
| 3 | 6,2к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R87, R88, R89 |
| 1 | 1,3к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R92 |
| 2 | 10к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R93, R94 |
| 2 | 47к | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R97, R103 |
| 2 | 4,7к | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R98, R99 |
| 1 | 120 | R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R104 |
Juku design files
The KiCad project lives in the ddanila/8080-cosim repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/juku.kicad_pcb
- Schematickicad/juku.kicad_sch
- BOMdocs/replica-dual-config-bom.csv
Juku: common questions
How big is the Juku PCB?
The Juku measures 310 × 266 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Juku?
266 components, from 110 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Juku design files?
From the ddanila/8080-cosim repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Juku design in my own project?
The repository has no license, so all rights stay with ddanila. Use it as a reference, and ask the author before reusing the design.
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