
DigitalIO Rev1
jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

Schematics and documentation for my modular Z80 machine, inspired by RC2014
MainBoard Rev1 is an open-source printed circuit board by jayvalentine, from the jayvalentine/modular-z80 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 217.2 × 109.2 mm with 32 parts on 51 nets, routed with 129 tracks and 0 vias.
It is built around the 74HC04D. Its parts include 12 capacitors, 9 connectors, 5 resistors, 2 ICs and 2 diodes. It belongs with the computers and single-board computers and retro computing and games boards of this library.
This repository contains schematics, PCB layouts, and documentation for my modular Z80 computer. All schematics and layouts are done using Kicad.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C2, C5, C6, C7, C8, C9, C10, C11, C12 |
| 8 | Conn_01x40_Female | Connector_PinSocket_2.54mm:PinSocket_1x40_P2.54mm_Vertical | J1, J3, J4, J5, J6, J7, J8, J9 |
| 2 | 22p | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C3, C4 |
| 2 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 220n | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | 74HC04 | Package_DIP:DIP-14_W7.62mm_Socket | U1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J2 |
| 1 | Crystal 3.6864MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | LED_GREEN | LED_THT:LED_D3.0mm | D2 |
| 1 | LED_RED | LED_THT:LED_D3.0mm | D1 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | SW_DIP_x01 | Button_Switch_THT:SW_Tactile_Straight_KSA0Axx1LFTR | SW1 |

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014

jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014


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It measures 217.2 × 109.2 mm and has 2 copper layers, 1.6 mm thick.
32 parts, built around the 74HC04D. 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.
From the jayvalentine/modular-z80 repository on GitHub, at the commit this page was made from: the board is MainBoard_Rev1/MainBoard_Rev1.kicad_pcb and its schematic Banked_RAM_Higher/Banked_RAM_Higher.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).