
Сообщение от
Black_Cat
- DMA chip has no prospects for the ZX Spectrum. Modern clones operate on a frequency of 7 to 70 MHz.
- In the USSR, focused on another chip RTC - type DS1685.
- Kempston joystick port is present in all ex-USSR clones ZX Spectrum.
- The standard IDE interface for all ex-USSR clones is NemoIDE.
- 512KB SRAM backuped with battery is not very interesting, because from the ex-USSR clone a is a large amount of RAM.
- Nmi button & FDD is present in the controller TR-DOS.