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