Sysbus
About the Sysbus PCB
Sysbus is an open source PCB design by rcapaverde, published on GitHub. It is a 2-layer board measuring 297 × 75 mm, with 63 components from 41 distinct parts.
Other key parts include the MC14495P, ADDR N3, ADDR N2, NE555P and DATA N1. By type, the board carries 20 ICs, 15 connectors, 14 capacitors, 9 resistors, 2 transistors and 2 diodes.
From the project
Arquitetura de processador conceitual
Main components on the Sysbus
Sysbus bill of materials (BOM)
63 components, 41 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | MC14495P | DIP-16_W7.62mm | U1, U3, U6, U8, U10, U13, U21, U31 |
| 1 | ADDR N3 | Sx39-1xxxxx | U2 |
| 1 | ADDR N2 | Sx39-1xxxxx | U4 |
| 1 | NE555P | DIP-8_W7.62mm | U5 |
| 1 | DATA N1 | Sx39-1xxxxx | U7 |
| 1 | ADDR N0 | Sx39-1xxxxx | U9 |
| 1 | ADDR N1 | Sx39-1xxxxx | U11 |
| 1 | DATA N0 | Sx39-1xxxxx | U12 |
| 1 | RDADDR_LOW | Sx39-1xxxxx | U14 |
| 1 | RDADDR_HIGH | Sx39-1xxxxx | U17 |
| 1 | WRADDR_HIGH | Sx39-1xxxxx | U22 |
| 1 | WRADDR_LOW | Sx39-1xxxxx | U23 |
| 1 | LM7805 | TO-220-3_Vertical | U34 |
| 2 | BC548 | TO-92_Inline | Q1, Q2 |
| 1 | bus ula 2 | conector 02x08 | J1 |
| 1 | bus ula 1 | conector 02x08 | J2 |
| 1 | bus rf16 1 | conector 02x08 | J3 |
| 1 | bus rf16 2 | conector 02x08 | J4 |
| 1 | bus mem 1 | conector 02x08 | J5 |
| 1 | bus mem 2 | conector 02x08 | J6 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | bus clu 1 | conector 02x08 | J7 |
| 1 | bus clu 2 | conector 02x08 | J11 |
| 1 | bus clu 3 | conector 02x08 | J12 |
| 1 | 9V 1A | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J19 |
| 1 | VOLTS | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J20 |
| 1 | AMPS | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J21 |
| 1 | bus ioc 1 | conector 02x08 | J23 |
| 1 | bus ioc 3 | conector 02x08 | J24 |
| 1 | bus clock | conector 02x08 | J26 |
| 1 | RESET | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | SW1 |
| 1 | PWR | LED_D5.0mm | D1 |
| 1 | 1N4001 | D_DO-41_SOD81_P10.16mm_Horizontal | D32 |
| 8 | 100nF | C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C3, C6, C8, C10, C13, C21, C31 |
| 3 | 100nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C4, C5, C12 |
| 1 | 0.33uF | CP_Radial_D5.0mm_P2.50mm | C11 |
| 1 | 0.1uF | CP_Radial_D5.0mm_P2.50mm | C14 |
| 1 | 10nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C22 |
| 3 | 470R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R12, R20 |
| 4 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R16, R21, R22 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R23 |
| 1 | 10K | R_Array_SIP9 | RN1 |
Sysbus design files
The KiCad project lives in the rcapaverde/cubo repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb_v3/sysbus/sysbus.kicad_pcb
- Schematicpcb_v3/sysbus/sysbus.kicad_sch
Sysbus: common questions
How big is the Sysbus PCB?
The Sysbus measures 297 × 75 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Sysbus?
63 components, from 41 distinct parts. The full bill of materials is listed on this page.
Where can I download the Sysbus design files?
From the rcapaverde/cubo repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Sysbus design in my own project?
The repository has no license, so all rights stay with rcapaverde. Use it as a reference, and ask the author before reusing the design.
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