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A500r5 eprom adapter

hkzlab·A500_r5-eprom_adapter·board/A500r5_eprom_adapter-DIP/A500r5_eprom_adapter.kicad_pcb

A500r5 eprom adapter PCB layout, top view — open source board by hkzlab

About the A500r5 eprom adapter PCB

A500r5 eprom adapter is an open source PCB design by hkzlab, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 39.4 × 86.4 mm, with 12 components from 8 distinct parts.

Other key parts include the 27C400-A500 and 27C080-L. By type, the board carries 4 resistors, 3 ICs, 3 connectors and 2 capacitors.

It belongs with the retro computing designs in this gallery.

From the project

Amiga 500 rev.5 EPROM adapter for 27C020, 27C040 and 27C080

In this repository You'll find two no-frills boards that I designed with a simple problem to solve: allow me to install multiple Kickstarts in my Amiga 500 rev.5 units without having to shell out money for an expensive 27C400 that I then need to rewire to make compatible.

The board includes sockets for pullup resistors that are oftentimes required (if your Amiga doesn't already have them) when fitting an new EPROM.

A500r5 eprom adapter, from the project README
From the project README

Main components on the A500r5 eprom adapter

27C400-A50027C080-L

A500r5 eprom adapter bill of materials (BOM)

12 components, 8 distinct parts.

QtyPartRefs
1
27C400-A500
U1
2
27C080-L
U2, U3
1
A18 Selector
J2
1
A19 Selector
J3
1
A17 Selection
J4
2
100nF
C1, C2
2
4k7
R1, R2
2
4k7
RN1, RN2

A500r5 eprom adapter design files

The KiCad project lives in the hkzlab/A500_r5-eprom_adapter repository on GitHub; these links point at the commit this page was built from.

A500r5 eprom adapter: common questions

How big is the A500r5 eprom adapter PCB?

The A500r5 eprom adapter measures 39.4 × 86.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the A500r5 eprom adapter?

12 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the A500r5 eprom adapter design files?

From the hkzlab/A500_r5-eprom_adapter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the A500r5 eprom adapter design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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