When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi fellow Amiga enthusiasts! Do you have a badly corroded A501 release 6 memory expansion? Or perhaps you are looking for a cool Amiga-related project?
This is my brand-new exact replica of an Amiga A501 release 6 memory expansion PCB (for the Amiga A500 trapdoor compartment). Please note this is the later r6 version, this uses (4) 256kx4 RAM chips. I also have the older release 5 version, so check my store (link below).
This board ships unpopulated and includes only the PCB. You can migrate all the components from your old crusty A501, or you can actually find all the components new (as seen in the pictures above. BOM listed below). The only item you cannot find is the 56pin edge connector. Simply modify two smaller sized ones, and install. Use the original Amiga 500 r6 schematics for guidance on assembly (the A501 R6 memory expansion is the last page of the schematic). This document is freely available.
Here is my YouTube channel videos link, where you can see me assembling this item, and other Amiga-related repairs and stuff:My YouTube Channel
Please check my store for more Amiga items, like optical mice, VGA, and HDMI adapters.Here is a link to my store:
My storeBOM (Bill of Materials)
(4)256kx4 DRAM chips 150ns or lower (4256-15, 4c256-15)(1) 74LS163 logic DIP-16(1) 74LS86 logic DIP-14(1) 74LS27 logic DIP-14(1) M6242 Clock Chip DIP-18 (from ME! = Batttery Holder (https://amzn.to/3suW6Tr)LIR2032 Rechargable Coin Battery (https://amzn.to/3gBXhOd)(2) DIODE, ZENER. 1/2W, 10v+ 1N914(3) 10k ohm resistors(2) 470 ohm resistor(3) SIP-10 resistor network, 68ohm, isolated*** All ceramic caps should be axial package if you want it to look like factory a501(7) 330nF Ceramic Capacitors (1) 22pF Ceramic capacitor(1) 100nF Cermaic Capacitor(1) 4.7uF 10v+ Electrolytic Capacitor(2) 100uF 10v+ Electrolytic Capacitors(1) 6.8-45pF Variable Capacitor (Digikey, 2447-GKG50015-ND)(1) CRYSTAL, 32.768KHz (https://amzn.to/37UOOOC)(2) Header_Female_2x20_2.54mm (DigiKey, A34311-ND)
