Tag: 320kb

3 matching upgrades

Showing 3 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
AvailableChecked Jul 27, 2026	5cfab 1090XL 320K Memory Cardby 5cfab 1090xl 1091xl 320kb rambo extended memory spartados x	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. Sources 5cfab 1090XL 320K card 5cfab 1090XL reproduction page	1090XL-family expansion systems Exact model Atari 600XL Bus/interface Atari 800XL Bus/interface	5cfab 1090XL 320K card
AvailableChecked Jul 27, 2026	5cfab 320K XL Memory Upgradeby 5cfab 320kb memory expansion pbi external upgrade usb c spartados x	Expands an Atari 600XL or 800XL to 320 KB through the rear parallel bus without opening the computer. The Tindie page reported one unit in stock on 2026-07-27. A 600XL supplies power through its parallel bus. Most 800XL computers do not, so the board provides a jumper-selectable USB-C or wired 5 V input. Follow the seller's internal-versus-external power procedure and jumper setting for the exact computer. Sources 5cfab 320K XL memory product page	Atari 600XL Exact model Atari 800XL Exact model	5cfab 320K XL memory product page
AvailableChecked Jul 27, 2026	Lotharek SRAM Replacement Familyby Lotharek ram sram memory expansion fpga 320kb 8mb usb c firmware update internal upgrade	Replaces Atari 8-bit dynamic RAM with modern SRAM or configurable FPGA-managed PSRAM in three current versions. All three memory variants exposed login-or-register-to-buy paths on 2026-07-27. Installation goes under the CPU and may require removal or isolation of the original DRAM, desoldering, new sockets, and EXT_SEL or CAS_INHIBIT connections. The Professional version also uses an MMU adapter and its page says to install the latest firmware before use. The optional Freddy Module v2 cannot operate alone: the seller requires the basic SRAM module first and says VBXE owners do not need the Freddy replacement. Sources Lotharek SRAM 64Kb v5 page Lotharek ACID SRAM Lite page Lotharek ACID SRAM Professional 8 MB page Lotharek Freddy Module v2 page	Atari 600XL Exact model Atari 800XL Exact model Atari 1200XL Stated family	SRAM 64Kb v5 ACID SRAM Lite ACID SRAM Professional 8 MB Optional Freddy Module v2 Gowin FPGA programmer guide

AvailableChecked Jul 27, 2026

5cfab 1090XL 320K Memory Cardby 5cfab

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.

Sources

1090XL-family expansion systems Exact model
Atari 600XL Bus/interface
Atari 800XL Bus/interface

5cfab 1090XL 320K card

AvailableChecked Jul 27, 2026

5cfab 320K XL Memory Upgradeby 5cfab

Expands an Atari 600XL or 800XL to 320 KB through the rear parallel bus without opening the computer.

The Tindie page reported one unit in stock on 2026-07-27. A 600XL supplies power through its parallel bus. Most 800XL computers do not, so the board provides a jumper-selectable USB-C or wired 5 V input. Follow the seller's internal-versus-external power procedure and jumper setting for the exact computer.

Sources

5cfab 320K XL memory product page

Atari 600XL Exact model
Atari 800XL Exact model

5cfab 320K XL memory product page

AvailableChecked Jul 27, 2026

Lotharek SRAM Replacement Familyby Lotharek

Replaces Atari 8-bit dynamic RAM with modern SRAM or configurable FPGA-managed PSRAM in three current versions.

All three memory variants exposed login-or-register-to-buy paths on 2026-07-27. Installation goes under the CPU and may require removal or isolation of the original DRAM, desoldering, new sockets, and EXT_SEL or CAS_INHIBIT connections. The Professional version also uses an MMU adapter and its page says to install the latest firmware before use. The optional Freddy Module v2 cannot operate alone: the seller requires the basic SRAM module first and says VBXE owners do not need the Freddy replacement.

Sources

Atari 600XL Exact model
Atari 800XL Exact model
Atari 1200XL Stated family

SRAM 64Kb v5 ACID SRAM Lite ACID SRAM Professional 8 MB Optional Freddy Module v2 Gowin FPGA programmer guide