Tag: memory

Recreates an Atari 8-bit computer on a Mini-ITX motherboard with integrated memory, input, mouse, and video upgrades.

The maker publishes schematics, a BOM, production Gerbers, firmware, and PCB source files. The page points to The Brewing Academy for boards and systems, but current assembled stock was not checked in this pass.

Period 5 MHz 8088 coprocessor card with optional fast memory and an 8087 socket.

This is a period product obtained used. The AD8088 has 2K of onboard RAM expandable to 8K; larger programs need the separate AD128K in a nearby slot, and the AD128K cannot operate by itself. The original package included FTL math acceleration and the MET event timer. CP/M-86 and MS-DOS support depended on separately supplied operating-system software. A system needs at least 48K, a Language Card or equivalent, a disk drive, and a display. An 8087 may require extra cooling or an empty adjacent slot.

Combines a 14 MHz 65816 accelerator, 14 MB memory expansion, HDMI output, RAM disk, and SD-backed drives for the Apple IIgs.

The regular AppleSqueezer GS v2 listing was out of stock on 2026-07-24. A separate preorder tile remained visible, but an active preorder order path was not verified; check the shop or mailing list for another production run.

Period 3.6 MHz accelerator with a 65C02, 256K of high-speed memory, and optional 16-bit processor upgrades.

This is a period product obtained used and is distinct from TransWarp GS. Confirm the exact card revision, installed processor, diagnostics, and slowdown behavior before buying. The brochure says it works with most DMA cards, but a mixed vintage system still needs card-by-card verification.

Adds a driverless 32 MHz 68030 accelerator to a Macintosh Color Classic or LC II processor-direct slot.

The current product page explicitly said Out of Stock on 2026-07-24. Its mid-February 2025 next-batch note is stale.

Accelerates an Apple IIe to as much as 16.6 MHz and adds fast auxiliary and Slinky memory.

The product page offered an Add to Cart path on 2026-07-24. Software with cycle-sensitive timing may need the speed reduced; confirm processor, memory configuration, and slot use before ordering.

Provides selectable Apple Slinky or RAMFactor-compatible memory using modern low-power SDRAM.

The assembled Tindie card was out of stock on 2026-07-24 and had been sold out since January 23, 2025. Schematics, board files, CPLD firmware, utility software, and fabrication files remain available under the project's dual-license terms.

Replaces the stock ROM SIMM with a 32-bit-clean flash ROM, bootable ROM disk, and HD20 support.

The BMOW store showed the Carbon SIMM as sold out on 2026-07-14. It is incompatible with DayStar PowerCache and Turbo accelerators.

Expands a 576NUC+ to 1088 KB and adds a real-time clock, A8PicoCart, SDrive-ng, and optional FujiNet networking and MIDI synthesis.

Revised Gerbers, schematics, BOM, datasheet, firmware, and case files were published in March and April 2025. The maker says The Brewing Academy will offer assembled and DIY parts, but current seller stock was not verified in this pass.

Current multifunction 8-bit ISA card that adds emulated storage, memory, networking, and USB or SD-connected devices to PC/XT-class computers.

Adds 8 MB of low-power SRAM and battery-backed storage to a RamWorks III card.

The card is currently listed as out of stock. It is an add-on and requires a compatible RamWorks III base card.

Adds 1 MB of battery-backed RAM and a real-time clock to supported Apple IIc and IIc Plus logic boards.

Both variants were out of stock on 2026-07-24. Open the computer and identify its model, ROM, logic-board layout, and memory-expansion connector before choosing a version. The A2S4000 version requires CPU removal and socket installation; an Apple IIc with ROM 0 must first be upgraded to ROM 1 through 4.

Modernizes the Applied Engineering RAMFactor design with 1 MB or 8 MB of low-power Slinky RAM and battery-backed storage.

The 1 MB version showed one unit in stock on 2026-07-24; the 8 MB version was out of stock. A CR2032 is required for battery-backed use and is explicitly omitted from the 1 MB package because of postal restrictions.

Recreates the Applied Engineering RamWorks III memory and 80-column card for the Apple IIe.

The store currently lists this 64K self-assembly kit as out of stock. It includes the PCB, parts, and assembly diagram and requires soldering.

Adds 8 MB of auxiliary-slot SRAM and battery-backed storage to an Apple IIe.

The assembled card was out of stock on 2026-07-24. It is a complete auxiliary-slot card, not the PiggyBack8M add-on for a separate RamWorks III.

Switches an upgraded early Macintosh between 128K and 512K memory configurations.

The product page listed the switcher kit and optional Macintosh 512K adapter without an out-of-stock marker on 2026-07-24. The vendor no longer sends this electronic item by international registered mail.

Fanless reinforced Macintosh SE/30 power supply intended for accelerators, larger hard drives, and high-capacity memory.

The Artmix page reported out of stock on 2026-07-24. Keep the direct page for a possible restock.

Replaces the ULA, video RAM, upper RAM, and RF modulator in Issue 2 through 6 ZX Spectrum 48K boards while adding modern video, sound, memory, and machine modes.

The seller listed availability after 2026-08-31 and exposed a preorder path on 2026-07-27. Installation is invasive: remove the ULA and RF modulator, disable or remove the original DRAM, connect M1, RESET, IORQ, and RFSH at the Z80, and install the supplied RGB adapter and ribbon cable. The output is digital RGB only, not composite or YUV. Verify board issue, pin 1, wiring, case clearance, display compatibility, and the current installation guide before work.

PDS memory accelerator that replaces Macintosh SE/30 SIMMs with 256 MB of SDRAM and provides an unbuffered PDS pass-through.

The Tindie page reported four assembled cards in stock at $297 on 2026-07-27. Its United States shipping section simultaneously showed a free rate and said the item did not ship there, so confirm destination availability at checkout. The current Rev B manual covers firmware v0.8.0. It warns against using the older v0.5.4 extension with address translation, documents a ROM-shadowing bypass for timing-sensitive accelerator functions, and says Apple Personal Diagnostics memory tests can hang or corrupt memory near completion. A cache-slot accelerator must never be inserted directly into the SE/30 PDS or the Synchr pass-through; use the correct SE/30 adapter. Three-card stacks discussed by the community remained untested.

Vintage VIC-20 multifunction cartridge combining configurable RAM, flash storage, SD2IEC storage, a real-time clock, and a launcher menu.

Historic Revision 11 production batches sold out. No current primary order path or complete, current fabrication package was verified on 2026-07-27, so look for a used unit and confirm its revision and condition.