RAM Hijacker – AIIE 80COL to 64K RAM Adapter
This product is a sub-board that allows an unused Apple IIe 80 Column (80COL) card—often left sitting in a drawer—to be reused as a 64K RAM card.
It installs directly into the IC sockets on the AIIE 80COL card.
Product Type & Price
DIY Kit
Price: USD 18
*All necessary components are included in the kit (**A).
PCB Color
Black ●
Purple ●
About This Project
For more details about this project, click here.
All you need to do is assemble the daughter board and add a jumper cable to convert your 80COL card into a 64K RAM card.
Kit Contents
R1, R2: Carbon resistors 100Ω 1/4W ×2
R3: Carbon resistor 470Ω 1/4W ×1
D1: M3 LED ×1
The build example uses a blue LED
C1, C2: Multilayer ceramic capacitors 0.1µF (100nF) ×2
U1, U2: 18-pin IC sockets ×2, 64K×4 DRAM chips TMS4464 ×2 (bonus items)
UA1, UB1, UC1: Round-pin header set ×1
As shown in the photos, these are pre-connected
They are folded for use, so a small excess remains
80COL card-edge jumper cable 1 inch (25 mm) ×1
This jumper cable is not required if your Apple IIe logic board is Rev. A
Important Notice (**A): About the DRAM Chips
Originally, this kit did not include the TMS4464 DRAM chips.
The reason was the potential risk of damage caused by X-ray inspection during customs clearance when shipping DRAM chips from Japan.
We will not go into detail here about X-ray effects on DRAM, but many references can be found online.
Additionally, we do not know the exact failure rate of these used DRAM chips.
Currently, the DRAM chips are included free of charge.
To minimize possible X-ray exposure, we take precautions such as wrapping the chips in aluminum foil before shipping.
Please note:
The included DRAM chips may fail unexpectedly
If even one of the two chips is defective, the board will not function correctly
If the DRAM chips are faulty, we regret that replacements cannot be provided, and you will need to purchase compatible chips separately.
Please purchase only if you understand and accept this condition.
We will, however, provide as much support as reasonably possible in case of issues.
Assembly Instructions
You can download the assembly instructions here.
