6 layers244 × 244 mm
Retroslop
CPTforever/8088-MicroATX-Computer
A 8088 based, IBM 5150 like computer compatible with the MicroATX motherboard form factor.
193 parts
4 layers116 × 111 mm
Motherborard
nikitaG2011/8088homebrew18088 homebrew computer
- Size
- 116 × 111 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 103
- Pads
- 296
- Tracks, vias
- 1,114, 62
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Dec 2025
- Updated
- 26 Oct 2026
Overview
Motherborard is an open-source printed circuit board by nikitaG2011, from the nikitaG2011/8088homebrew repository on GitHub. It is a 4-layer board of 116 × 111 mm with 16 parts on 103 nets, routed with 1,114 tracks and 62 vias.
It is built around the 74LS373SC, 74LS00SC and AS6C4008-55PCN. Its parts include 9 ICs, 2 capacitors, 2 resistors, 1 connector and 1 switch.
Main components
3
74LS373SC
--55℃~+125℃ 1 2.6mA 24mA 38ns@5V,150pF 4.75V~5.25V 74LS 8 Output enable Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
AS6C4008-55PCN
PDIP-320℃~+70℃ 2.7V~5.5V 30mA 4Mbit 4uA 55ns Parallel Port (Parallel) PDIP-32 SRAM ROHSAlliance MemorySRAM
README
README.mdjust run the make comand to assemble the code
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 74LS373 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U2, U6 |
| 2 | C | Capacitor_THT:C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C1, C2 |
| 1 | 1Kohm | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 1kohm | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
| 1 | 28C256 | Package_DIP:DIP-28_W15.24mm_LongPads | U9 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U7 |
| 1 | 74LS08 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U5 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U4 |
| 1 | 8088_Min_Mode | Package_DIP:DIP-40_W15.24mm | U1 |
| 1 | 8284 | Package_DIP:DIP-18_W7.62mm_Socket_LongPads | U3 |
| 1 | AS6C4008-55PCN | Package_DIP:DIP-32_W15.24mm_Socket_LongPads | U8 |
| 1 | Conn_02x40_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x40_P2.54mm_Horizontal | J1 |
| 1 | Crystal | Crystal:Crystal_HC18-U_Horizontal | Y1 |
| 1 | SW_MEC_5E | Button_Switch_SMD:SW_MEC_5GSH9 | SW1 |
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Questions
How big is the Motherborard PCB?
It measures 116 × 111 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Motherborard use?
16 parts, built around the 74LS373SC, 74LS00SC and AS6C4008-55PCN. 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 Motherborard KiCad files?
From the nikitaG2011/8088homebrew repository on GitHub, at the commit this page was made from: the board is schematic/RaArPr/motherborard/motherborard.kicad_pcb and its schematic schematic/RaArPr/motherborard/motherborard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Motherborard design in my own project?
Its repository states no licence, so its author keeps all rights: ask nikitaG2011 before reusing the design.