RAM2GS II (GW4201D) expands the Apple IIgs's fast memory to 8 MB. Low-Power, SDRAM-Based Design Thanks to a modern, low-power design, RAM2GS II uses a maximum of 0.15 watts when idle (30 mA @ 5V) ...Read More…
RAM2GS II (GW4201D) expands the Apple IIgs's fast memory to 8 MB.
Thanks to a modern, low-power design, RAM2GS II uses a maximum of 0.15 watts when idle (30 mA @ 5V) and 0.4W in active use (80 mA @ 5V). Unlike other IIgs RAM expansion cards, which are built with vintage asynchronous DRAM chips, RAM2GS II uses modern SDRAM. This design allows for low power consumption and improved reliability over other memory cards using 15+ year old chips.
RAM2GS II features a small board outline and is the thinnest Apple IIgs expansion memory card ever produced, at under 4.5 mm thin. Small and thin dimensions improve the mechanical compatibility between RAM2GS II and peripheral cards installed into the IIgs's Slot 7.
The Apple IIgs can utilize up to 8 MB of fast memory, but due to limitations of the Apple IIgs hardware, not all 8 MB is considered "DMA-compatible." Only 4 MB of the 8 MB provided by an expansion RAM card such as the RAM2GS II is DMA-compatible, and peripheral cards which use DMA are not able to access expansion memory beyond 4 MB. RAM2GS II implements an adjustable capacity feature, allowing the user to select between fully DMA-compatible 4 MB capacity, or partially DMA-compatible 8MB capacity. Capacity settings can be set temporarily or saved in nonvolatile memory. The capacity adjustment utility is available on our website, http://garrettsworkshop.com. For more information on the capacity adjustment utility, see the section “Changing RAM Capacity” in the manual.
RAM2GS II features a lead-free, ENIG gold-plated, 4-layer PCB and is fully EU RoHS-compliant. All units are tested extensively before shipment. Only new parts are used to build RAM2GS II, and all RAM2GS II cards are manufactured in our semi-automated facility in Columbus, Ohio, in the United States.
RAM2GS II's design is fully open-source. The schematics, board layouts, CPLD firmware, and utility software are all freely available for commercial and noncommercial use. To download the design files, visit the Garrett's Workshop GitHub page, https://github.com/garrettsworkshop.
|Shipping Rate||Ships From||First item||Additional items|
United States Postal Service: USPS FIRST-CLASS PACKAGE
Same day shipping. Ships from Columbus, Ohio.
Bryce | July 24, 2020
Vladimir | May 27, 2019
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!