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Tools, APP Software Used etc.

KiCad 9.0

Description

MiSTer_A8SIO

Adapter for the SIO port to connect peripheral devices of the 8-bit Atari to the MiSTer FPGA.

Components

The following modules can be used to build an adapter without using SMD components:

AMS 1117 3.3V stabiliser module
2 x 4ch level shifter module
USB 3.0 Type A angled socket
SIO socket

For basic functionality, one level shifter (mounted on J5/J6) and an LDO power supply module (mounted on J7/J8) are sufficient.

The MOTOR CTRL circuit for controlling the tape recorder is optional.

To connect to MisterFPGA, you need a USB3.0 A data transfer cable (blue type A plugs on both sides).

The adapter can ONLY be connected to the User Port on the I/O daughter board.

3D printed SIO Socket:

https://www.thingiverse.com/thing:5176832

Schematic and Layout

Project GitHub repository

https://github.com/pmandes/MiSTer_A8SIO

Download Gerbers Download BOM(Bill of materials)

Nov 17,2025

977 views

MiSTer_A8SIO

Adapter for the SIO port to connect peripheral devices of the 8-bit Atari to the MiSTer FPGA.

977

Published: Nov 17,2025

Standard PCB

Download Gerber file 11

BOM(Bill of materials)

Centroid file

PCBWay Donate 10% cost To Author

File Last Updated: 2025/11/19 (GMT+8)

File update record

2025-11-1905:25:16

Centroid file is updated.

2025-11-1905:18:02

Centroid file is updated.

2025-11-1905:18:02

Parts List (BOM) is updated.

Only PCB

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