Didaktik M

The Didaktik M was another ZX Spectrum clone, but instead of the ULA chip for display, it used the Soviet Angstrem T34BΓ1 chip. It had 64KB RAM built in, but only 48K was usable as there was no bank-switching provided, and 16K of the Z80's 64K address space was taken up by the BASIC ROM.

Because of the Anstrem chip, display was sllightly different, the screen's aspect ratio was not really 4:3. The reason for the chip choice was that it had better thermal stability, something that earlier Didaktik computers and the computers they were based on lacked, causing overheating issues.