HardLabs

XTMAX

MicroCoreLabs·Projects·XTMax/PCB/XTMAX_PCB/XTMAX_PCB.kicad_pcb

XTMAX PCB layout, top view — open source NXP board by MicroCoreLabs

About the XTMAX PCB

XTMAX is an open source NXP PCB design by MicroCoreLabs, published on GitHub. It is a 4-layer board measuring 81 × 46 mm, with 14 components from 7 distinct parts.

Its main chip is the Teensy4.1, from the NXP family. Other key parts include the SN74LVC245A and SN74LVC244. By type, the board carries 7 ICs, 4 capacitors and 3 connectors.

It belongs with the retro computing designs in this gallery.

From the project

Ted Fried's MicroCore Labs Projects - FPGA CPU cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects. MCL51, MCL64, MCL65, MCL65+, MCL68, MCL86, MCL86+, MCL86jr, MCLR5, MCLZ8, MCL6809, XTMax, MCL8080+

My blog which has some details on these projects: www.MicroCoreLabs.Wordpress.com

My YouTube Channel with some videos of the stuff in action: www.youtube.com/channel/UC9B3TaEUon-araO2j7tp9jg/videos

MCL6809 - Motorola 6809E emulator which runs on a Teensy 4.1 and can be used as a drop-in replacment MCLZ8 - Zilog Z80 emulator which runs on a Teensy 4.1 and can be used as a drop-in replacment MCL86+ - Intel 8088 emulator which runs on a Teensy 4.1 and can be used as a drop-in replacment MCL86jr - IBMPCjr Accelerator which boosts performance to IBM PC/AT speed MCL65+ - MOS 6502 emulator which…

Main components on the XTMAX

SN74LVC245ATeensy4.1SN74LVC244

XTMAX bill of materials (BOM)

14 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
5
SN74LVC245A
U1, U3, U4, U7, U8
1
Teensy4.1
U2
1
SN74LVC244
U5
1
Bus_ISA_8bit
J1
1
Conn_02x31_Odd_Even
J2
1
Conn_02x01
J3
4
10 uF
C1, C2, C3, C4

XTMAX design files

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

XTMAX: common questions

What microcontroller does the XTMAX use?

The XTMAX is built around the Teensy4.1, from the NXP family.

How big is the XTMAX PCB?

The XTMAX measures 81 × 46 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the XTMAX?

14 components, from 7 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 XTMAX design files?

From the MicroCoreLabs/Projects 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 XTMAX design in my own project?

The repository has no license, so all rights stay with MicroCoreLabs. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the XTMAX without the hardware?

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

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