Amstrad ZX Spectrum +2B upgrades

The later +2B revision of the black-cased Amstrad ZX Spectrum +2 design.

Also called: Spectrum +2B, +2B

At a glance

Introduced: 1989

Products listed: 2

Exact-model evidence: 2

Family/interface evidence: 0

Upgrade types: 2

Vintage searches: 0

Upgrade directory: ZX Spectrum +2B

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact target, a broader family, or only the relevant bus or interface for this computer.

Showing 2 products.

StatusProductWhat it doesLinks
AvailableChecked Jul 27, 2026BISON FPGA DivMMC TurboSound 2xAYby Lotharek
divmmcmicrosdesxdos512kbturbosounddual aycovoxsoundrivejoystickmousefpgaedge connector

Combines DivMMC-compatible microSD storage, 512 KB of expansion RAM, dual-AY audio, DAC modes, and configurable joystick or mouse input on the ZX expansion bus.

For this system (exact model): The upstream project reports testing on the +2B. BISON's automatic Amstrad selection depends on the expected 9 V edge-connector signal.

The seller exposed a login-or-register-to-buy path on 2026-07-27 and documented firmware 1.5. Power off before changing the edge connection or input mode. Automatic Sinclair-versus-Amstrad selection depends on 9 V at edge pin 3B; compatible clones without that signal need the documented modification. Firmware updates require a separate Gowin programmer and removal of the flash ROM. Prepare a separate FAT32 microSD card with the supported ESXDOS release.

Sources
Buy BISON FPGADivTIESUS open project
AvailableChecked Jul 27, 2026DivIDE_AYby Lotharek
dividecompactflashesxdosfatwarefirmwareay 3 8912stereojoystickcpldedge connector

Combines CompactFlash storage, four selectable firmware slots, AY sound, stereo output, and two joystick ports on a ZX Spectrum expansion interface.

For this system (exact model): The instructions explicitly name +2B as an Amstrad-mode host. Set the interface mode only while power is removed.

The seller exposed a login-or-register-to-buy path on 2026-07-27. Use a CompactFlash card with one active FAT16 partition and remove it only while power is off. The page distinguishes Sinclair and Amstrad bus modes, says the grey +2 is not an Amstrad-mode machine, and explicitly names +2B and +3 for Amstrad mode. It does not clearly establish +2A support, so that model is not attached.

Sources
Buy DivIDE_AY