Wonder RAM

Simple ZX Spectrum memory upgrade to partial ZX128 compatibility.

Offers 80kB switched like 128kB in ZX Spectrum 128, so some ZX128 software works on such upgrade. Mostly when need only one extra bank for music.

Files for download

opis.txt 2.4kB (2001-01-30 11:00)

[pl] Description.

ram80k.gif 25.1kB (2001-01-25 21:21)

Schematics made in Eagle.

sch80k.gif 17.9kB (2001-01-25 21:21)

Board view made in Eagle.

See also

4MB RAM upgrade : ZX Spectrum

ZX Spectrum memory upgrade - 4MB RAM (DRAM).

TC2144

Upgrade to 144kB RAM with compatibility to ZX Spectrum 128K.

ZX Spectrum / Timex - To 128K

Upgrade ZX Spectrum 48K to ZX Spectrum 128K compatibility. Also solutions for Timex Computer 2048.