Tag: ram disk

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 slot memory and bootable RAM-disk card with optional expansion and battery backup.

This is the original period product, distinct from modern RamFactor-compatible cards. Used examples vary by board revision, installed memory, expander, ROM, and included software. It normally uses a peripheral slot other than slot 3; an Apple II Plus must not use slot 0. The IIgs treats it as RAM-disk storage rather than fast system memory. Verify any RamCharger, cable, and old battery hardware before applying power.

Period internal Apple IIc card combining 256K or 512K of memory with a Z80 processor for CP/M.

This is a period internal card obtained used. The original package included RAM-disk software, a Z80 operating system, and CP/M documentation; verify that software and installation material are present. Opening the IIc and installing the board is required.

Adds 1 MB of banked RAM to an Atari 1200XL or 800XL with a 30-pin SIMM and custom refresh and bank-selection logic.

The archived article provides the circuit discussion, 1200XL connection table, SIMM pinout, and software notes but describes the 800XL only as having similar connection points. It is an advanced historical wire-and-perfboard build. The author reports that the SpartaDOS cartridge does not function with this configuration and that ordinary SpartaDOS and much commercial software see only a 320XE-style subset; MYDOS 4.5.1M or newer needs the documented page sequence.

Adds flash-backed ProDOS volumes, a RAM disk, recovery ROM, clock, network transfer, and Applesoft enhancements inside an Apple IIc or IIc Plus.

JCM showed assembled 128 MB Apple IIc units in stock on 2026-07-24, while human review found the separate assembled IIc Plus package out of stock. The family remains available through the IIc version. A system-ROM replacement is required. Early ROM 255 IIc boards may need W1 and W2 modification, and early spring-clip keyboards may need the low-profile stiffener for clearance.

Adds a vintage 1 MB banked-memory board to an Atari 800XL or 1200XL with several selectable PIA banking configurations.

Only archived installation instructions and the used market were verified. Installation requires the original Newell board or a faithful equivalent, memory devices, extensive motherboard wiring, isolated IC pins, and model-specific changes; a 1200XL also needs three address-trace changes. The recommended banking method preserves OS control and ANTIC banking but repurposes other PIA bits and may require BASIC and diagnostic switches. The top RF shield may no longer fit.

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.

Recreates the Saturn 128K bank-switched memory card for original Apple II systems.

The current Infinity Products storefront listed the assembled card without an out-of-stock marker on 2026-07-24.

Open 1 MB battery-backed RAMFactor-compatible memory card with a NoSlotClock-compatible clock and ProDOS restore image.

No current assembled seller was verified on 2026-07-24, but the GW4206B hardware, CPLD, firmware, documentation, and fabrication files remain public. A CR2032 is required for clock operation, retained RAM, and the restore partition. Replacing it erases RAM and resets the clock. Disable TimeDisk's clock when another NoSlotClock-compatible device is present. The USB updater requires 64-bit Windows 10 or later, including supported Boot Camp or Parallels configurations.

Documents period DIY memory conversions that give an Atari 400 48 KB plus a banked 16 KB or an Atari 800 a 288 KB SuperRam configuration.

These are historical, invasive board-level modifications rather than current kits. Both require extensive disassembly, trace cuts, soldering, stacked or perfboard logic, and staged electrical testing. The authors release the instructions for public use with attribution. The Atari 800 text lists six 41256 DRAMs, while human review found only one 41256 in its rough circuit sketch. The contradiction remains unresolved: do not treat the Atari 800 parts list or sketch as an authoritative build package without reconstructing and checking the circuit.