HardLabs

Interface36

shirriff·alto-disk-emulator·interface/interface36.kicad_pcb

Interface36 PCB layout, top view — open source NXP board by shirriff

About the Interface36 PCB

Interface36 is an open source NXP PCB design by shirriff, published on GitHub. It is a 2-layer board measuring 86 × 50 mm, with 16 components from 9 distinct parts.

Its main chip is the Teensy3.6, from the NXP family. Other key parts include the 74ACT240 and 74LVC245. By type, the board carries 5 ICs, 4 capacitors, 4 resistors and 3 connectors.

From the project

A Diablo disk emulator for use with a Xerox Alto

Note: This is still under development and is not working yet

The concept is a small box that you can plug into the Alto's disk interface, replacing the Diablo disk. The box will emulate the disk drive, using a disk image from a SD card.

The hardware design is in the interface directory. It is based on a Teensy 4.1 microcontroller and uses a LCD touch screen as the user interface.

Interface36, from the project README
From the project README

Main components on the Interface36

Teensy3.674ACT24074LVC245

Interface36 bill of materials (BOM)

16 components, 9 distinct parts.

QtyPartRefs
1
Teensy3.6
U1
2
74ACT240
U2, U3
2
74LVC245
U4, U5
1
Conn_01x40_Female
J1
1
Conn_01x14_Female
J2
1
Jack-DC
J3
4
.1uF
C1, C2, C3, C4
1
180
R1
3
100
R2, R3, R4

Interface36 design files

The KiCad project lives in the shirriff/alto-disk-emulator repository on GitHub; these links point at the commit this page was built from.

Interface36: common questions

What microcontroller does the Interface36 use?

The Interface36 is built around the Teensy3.6, from the NXP family.

How big is the Interface36 PCB?

The Interface36 measures 86 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Interface36?

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

Where can I download the Interface36 design files?

From the shirriff/alto-disk-emulator repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Interface36 design in my own project?

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

Can I test firmware for the Interface36 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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