16 Kbit DRAM Gives Up Its Secrets - Hackaday
Sep 26, 2023 · This time, the subject is the MK4116 — a 16 Kbit DRAM chip. Even without a calculator, you know that’s a whopping 2 Kbytes, and while that doesn’t sound impressive, in the late 1970s, it was a...
Reverse-engineering the classic MK4116 16-kilobit DRAM chip
Nov 14, 2020 · Back in the late 1970s, the most popular memory chip was Mostek's MK4116, holding a whopping (for the time) 16 kilobits. It provided storage for computers such as the Apple II, TRS-80, ZX Spectrum, Commodore PET, IBM PC, and Xerox Alto as well as video games such as Defender and Missile Command.
New old stock 8x 4116 RAM chips - ByteDelight.com
Set of 8 new old stock 4116 chips for the ZX Spectrum 16K/48K. These are perfect for replacing defective 4116 chips. These are for: 1. ZX Spectrum 16K / 48K ‘lower memory’ (there are 8 of these chips in these ZX Spectrum models) NB: Not suitable as ‘upper memory’ for ZX 16K/48K: these are 4164 chips, available in the webshop.
Modern replacements for old DRAM memory chips
Nov 19, 2015 · I have an old video card for a computer from the 1980s era, but unfortunately the memory chips on it have gone bad. As it's quite a rare device today, I would like to repair it. Unfortunately I can't find anywhere that sells pin-compatible replacements for the old 4164/4464 and 41256/44256 ICs.
4116 16k Video RAM – Datasheet - Circuits DIY
Oct 11, 2021 · As a state-of-the-art MOS memory device, the 4116 (16K advanced circuit techniques are designed to provide wide operating margins, both internally and to the system in speed and power previously seen only in MOSTEK’s high-performance MK 4027 (4K RAM).
Commodore 16 64K memory upgrade - Hacks - MCbx
Locate U5 and U6, they're ..416 Dynamic RAM chips. The photo shows lower left edge of the mainboard. U5 and U6 are two not MOS manufactured chips in the second column.
4116-15 DRAM Memory - Jameco Electronics
Jameco Electronics 4116-15 DRAM. Products in stock and ready to ship. Quotes, samples and datasheets available at Jameco Electronics.
Upgrading: Replacing the 4116 memory with 4164 memory
One common upgrade is to replace the 4116 memory (64k memory needing +5V, -5V and +12V) with 4164 memory (64k memory needing only +5V), but there are multiple ways of doing it. Here’s a summary of the options and some links and pictures: 1. Modify the CPU board to re-route the +5V and disconnect the -5V and +12V.
ZX Spectrum 4116 RAM Replacement Board - Part 1
Aug 14, 2020 · Many people (myself included) choose to replace a failed 4116 RAM chip with a modern replacement “board” that uses SRAM instead of DRAM. The reasons are clear, modern boards are made using readily available components - even “new” 4116 chips are all old stock and 30-odd years old.
New Build ZX Spectrum – Adding Lower and Upper RAM
New Build ZX Spectrum – Adding Lower and Upper RAM. The old Spectrum used two types of RAM. 4116 chips for the lower 16k of RAM and 4164 or 4532 DRAM for the 32K of Upper RAM.
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