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Description

30-PIN SIMM with EDO-2-FPM Mod

This memory PCB allows you to create high capacity 4MB SIMM modules for older PCs, Macs, and other vintage computers.

With a few alterations to the original schematics, this PCB allows you to configure EDO memory chips to behave like FPM chips.

Therefore, you can use EDO chips on older hardware that only supports FPM memory.

The original schematics were taken from UpLateGeek GitHub.

Configuration:

"DEFAULT" follows the original schematics from UpLateGeek (supports FPM memory)

"EDO 2 FPM" changes the schematics to configure EDO memory chips to act like FPM modules (supports EDO and FPM memory)

Cheers,

BitsUndBolts

Download Gerbers Download BOM(Bill of materials)

May 18,2023

6,674 views

30-PIN SIMM with EDO-2-FPM Mod

2 Layers PCB 20.6 x 88.9 mm FR-4, 1.2 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

Mix EDO with FPM memory chips or make EDO chips compatible with older systems that only support the FPM access mode.

6674

9.00 (1)

Published: May 18,2023

Standard PCB

Download Gerber file 187

BOM(Bill of materials)

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File Last Updated: 2023/05/18 (GMT+8)

File update record

2023-05-1811:32:32

Parts List (BOM) is updated.

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Topic

DIY Electronics

Misc

Retro Stuffs

DIY Retrocomputing Retro SIMM FPM EDO Memory

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