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Programming interface

vascofazza·8bit-cpu·start9_programming_interface/programming_interface/programming_interface.kicad_pcb

Programming interface PCB layout, top view — open source AVR/Arduino board by vascofazza
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About the Programming interface PCB

Programming interface is an open source AVR/Arduino PCB design by vascofazza, published on GitHub under the MIT license. It is a 2-layer board measuring 53.3 × 48.3 mm, with 12 components from 8 distinct parts.

Its main chip is the 74HCT32, from the AVR/Arduino family. By type, the board carries 4 diodes, 2 ICs, 2 switches, 2 capacitors, 1 connector and 1 resistor.

From the project

Schematics & code for my 74LS-based 8-bit MK1 CPU

An ATmega328-driven programming interface for the MK1 8-bit CPU.

Writes a program, stored in a flash memory, into the working memory of the MK1 CPU.

Supports up to 16 program slots, the program/next button is used to select the bank and write the selected program.

Programming interface, from the project README
From the project README

Main components on the Programming interface

74HCT32

Programming interface bill of materials (BOM)

12 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
74HCT32
AM29F040
U1
1
74HCT32
ATmega328P-PU
U2
1
USB_B-8BIT-COMPUTER-RESCUE
Conn_01x06
J1
1
Prog/Next
SW1
1
Reset
SW2
4
LED_ALT
D1, D2, D3, D4
2
0.1uf
C1, C2
1
10K
220
RN1

Programming interface design files

The KiCad project lives in the vascofazza/8bit-cpu repository on GitHub; these links point at the commit this page was built from.

Programming interface: common questions

What microcontroller does the Programming interface use?

The Programming interface is built around the 74HCT32, from the AVR/Arduino family.

How big is the Programming interface PCB?

The Programming interface measures 53.3 × 48.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Programming interface?

12 components, from 8 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 Programming interface design files?

From the vascofazza/8bit-cpu repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Programming interface design in my own project?

Yes, under the terms of its MIT license, which vascofazza chose for the repository.

Can I test firmware for the Programming interface without the hardware?

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

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