![]() There is a parallel interface with a chip 8255 (eg, for printer). ![]() ![]() It has 16Kb EPROM with an operating system called M-DOS (the official versions are 1.0, 1.0 +, 2.0), 2Kb SRAM for system variables, the controller WD2797 (for newer models controller Intel 8272) and separated data and address bus. This product was spread mainly in the Czech Republic (and Slovakia too).ĭ40/80 consists of power supply, drive (D40 = 5.25 DD D80 = 3.5 DD) and port for the second drive B (max 2 drives can be connected). Note: D40/D80 was floppy system produced by Slovak company Didaktik Skalica. ![]() Speccy Hardware A-Z Spectrum Hardware Index - D
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