Tag: extended memory

Replaces the Atari 1200XL memory subsystem with 1088 KB of SRAM.

The maker publishes a schematic, Gerbers, and the programmed-logic JED file but no bill of materials. The installation removes twelve socketed chips from the motherboard and transfers four original chips to the upgrade. The RF choke may need to be bent or removed for clearance. Install the 1 mm board only with the motherboard out of its case and supported on a solid surface because the stacked machine-pin sockets require substantial insertion force.

Provides 64 KB of main RAM and 256 KB of RAMBO-compatible extended memory through a 1090XL-family expansion slot.

The page reported three cards in stock on 2026-07-27. A 1090XL or 1091XL base system is required and is not included. The PBI-memory option must remain off when the host has VBXE or Ultimate 1MB. The RAM-disable option is recommended for modern reproduction systems so other cards can map their own memory.

Combines a new custom Atari 8-bit motherboard, 576 KB of memory, UGV II video, and a refurbished original Atari 130XE case and keyboard.

The exact product page reported sold out on 2026-07-27. The broader collection page disagreed, so check the exact listing for a restock.

Combines a new custom Atari 8-bit motherboard, 576 KB of memory, and monitor output with an original Atari 600XL case and keyboard.

The live Shopify product data and current catalog reported the complete unit orderable on 2026-07-27. It uses a cleaned original Atari 600XL case rather than a newly made enclosure.

Recreates the RAMBO 256 KB memory upgrade for Atari 800XL and 1200XL computers.

The maker publishes a schematic and Gerbers but no bill of materials, and recommends the 74LS logic shown in the schematic over the HCT parts pictured on one build. Installation is model-specific. A 1200XL also requires replacing its original 64K DRAM devices with 256K versions.