HardLabs

MemoryExpansion

RetroRemake·OtterX·MemoryExpansion/MemoryExpansion.kicad_pcb

MemoryExpansion PCB layout, top view — open source board by RetroRemake

About the MemoryExpansion PCB

MemoryExpansion is an open source PCB design by RetroRemake, published on GitHub under the CERN-OHL-W-2.0 license. It is a 4-layer board measuring 71.3 × 59.7 mm, with 9 components from 4 distinct parts.

Other key parts include the 74LS139 and AS6C4008-55PCN. By type, the board carries 4 ICs, 4 capacitors and 1 connector.

It belongs with the retro computing designs in this gallery.

From the project

8-Bit computer compatible with Commander X16

An Open Source 6502-based, Commander X16-compatible, 8-bit Computer

Looking to order and build your own OtterX? Official kits are available from:

Main components on the MemoryExpansion

74LS139AS6C4008-55PCN

MemoryExpansion bill of materials (BOM)

9 components, 4 distinct parts.

QtyPartRefs
1
74LS139
U1
3
AS6C4008-55PCN
U2, U3, U4
1
1.5MB RAM Expansion
J1
4
.1u
C1, C2, C3, C4

MemoryExpansion design files

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

MemoryExpansion: common questions

How big is the MemoryExpansion PCB?

The MemoryExpansion measures 71.3 × 59.7 mm, has 4 copper layers and is 1.5842 mm thick.

How many components are on the MemoryExpansion?

9 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the MemoryExpansion design files?

From the RetroRemake/OtterX repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MemoryExpansion design in my own project?

Yes, under the terms of its CERN-OHL-W-2.0 license, which RetroRemake chose for the repository.

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