Z80neo

TurBoss·z80neo·hardware/main.kicad_pcb

About the Z80neo PCB

Z80neo is an open source RP2040/RP2350 PCB design by TurBoss, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 108.4 × 96.8 mm, with 34 components from 9 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the SN74LVC245APW and Z084000xP. By type, the board carries 15 resistors, 7 switches, 4 ICs, 4 capacitors, 1 module and 1 connector.

It belongs with the retro computing designs in this gallery.

From the project

z80neo, another z80 board

A Raspberry Pi Pico 2 (RP235x) based computer arround the z80 cpu

https://matrix.to/#/#z80neo:jauriarts.org

https://github.com/lambdamikel/picoram6116

Hardware is released under CERN Open Hardware Licence Version 2 - Strongly Reciprocal Software is released under GPL V3 Licensee * Documentation is released under CC BY-SA 4.0

Main components on the Z80neo

SN74LVC245APW Z084000xP RaspberryPi_Pico

Z80neo bill of materials (BOM)

34 components, 9 distinct parts.

Qty	Part	Footprint	Refs
3	SN74LVC245APW	CERDIP-20_W7.62mm_SideBrazed_LongPads_Socket	U1, U2, U3
1	Z084000xP	DIP-40_W15.24mm	U4
1	RaspberryPi_Pico	RaspberryPi_Pico_Common_Unspecified	A1
1	Micro_SD_Card	PinSocket_1x08_P2.54mm_Horizontal	J2
1	SSD1306	Adafruit_SSD1306_No_Mounting_Holes	Brd1
7	SW_DIP_x01	SW_PUSH_6mm	SW1, SW2, SW3, SW4, SW5, SW6, SW7
1	LED_Small	LED_D3.0mm	D1
4	C_Small	C_Disc_D4.3mm_W1.9mm_P5.00mm	C1, C2, C3, C4
15	R_Small	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1, R2, R3, R4, R5, R6, R7, R8 +7

Z80neo design files

The KiCad project lives in the TurBoss/z80neo repository on GitHub; these links point at the commit this page was built from.

Layouthardware/main.kicad_pcb
Schematichardware/main.kicad_sch

Z80neo: common questions

What microcontroller does the Z80neo use?

The Z80neo is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the Z80neo PCB?

The Z80neo measures 108.4 × 96.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Z80neo?

34 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Z80neo design files?

From the TurBoss/z80neo repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Z80neo design in my own project?

Yes, under the terms of its GPL-3.0 license, which TurBoss chose for the repository.

Can I test firmware for the Z80neo without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.