Tag: 16k

2 matching upgrades

Showing 2 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
Find usedChecked Jul 24, 2026	Apple II New-Old-Stock 16K Memory Upgradeby Unknown original manufacturer 16k new old stock activity leds	Vintage 16K Apple II memory board with power, read, and write activity LEDs. The MacEffects listing said Sold out on 2026-07-24. The board does not include its required 4116 memory chips. The original manufacturer and exact board model were not identified, so compare photographs and connector details before buying a used example. Sources MacEffects Apple II 16K memory page	Apple II Exact model Apple II Plus Exact model	MacEffects new-old-stock memory listing Search eBay for Apple II 16K memory boards
Build itChecked Jul 28, 2026	Atari 800XL 8 x Multi Cartby Stephen Gillespie, based on Pixels Past and James Higgs multicart cartridge eprom 16k gerbers open hardware soldering diy	Adapts the Pixels Past 8K or 16K EPROM cartridge into an eight-selection homebrew multicart for the Atari 800XL. Human review found the combined visual material sufficient for a skilled builder. It remains an adaptation rather than a revised fabrication package: the linked Gerbers and assembly material are for the unmodified Pixels Past single-cartridge PCB, while the eight-way changes appear only in an inline diagram with no separate revised Gerbers, bill of materials, ROM-preparation guide, or textual selection instructions. Pixels Past licenses its base files under CC BY 4.0, but no license for the eight-way modification was verified. Sources 8-Bit Research multicart project Pixels Past project library Pixels Past base cartridge schematic	Atari 800XL Exact model	Atari 800XL 8 x Multi Cart project Pixels Past Atari 8-bit cartridge files Pixels Past base cartridge schematic

Find usedChecked Jul 24, 2026

Apple II New-Old-Stock 16K Memory Upgradeby Unknown original manufacturer

Vintage 16K Apple II memory board with power, read, and write activity LEDs.

The MacEffects listing said Sold out on 2026-07-24. The board does not include its required 4116 memory chips. The original manufacturer and exact board model were not identified, so compare photographs and connector details before buying a used example.

Sources

MacEffects Apple II 16K memory page

Apple II Exact model
Apple II Plus Exact model

MacEffects new-old-stock memory listing Search eBay for Apple II 16K memory boards

Build itChecked Jul 28, 2026

Atari 800XL 8 x Multi Cartby Stephen Gillespie, based on Pixels Past and James Higgs

Adapts the Pixels Past 8K or 16K EPROM cartridge into an eight-selection homebrew multicart for the Atari 800XL.

Human review found the combined visual material sufficient for a skilled builder. It remains an adaptation rather than a revised fabrication package: the linked Gerbers and assembly material are for the unmodified Pixels Past single-cartridge PCB, while the eight-way changes appear only in an inline diagram with no separate revised Gerbers, bill of materials, ROM-preparation guide, or textual selection instructions. Pixels Past licenses its base files under CC BY 4.0, but no license for the eight-way modification was verified.

Sources

Atari 800XL Exact model

Atari 800XL 8 x Multi Cart project Pixels Past Atari 8-bit cartridge files Pixels Past base cartridge schematic