（3）Arbitrary colors could be chosen from 65,536 colors for each dot of the graphic screen (in 512x512dot mode). Equipped with 1MB of main memory (standard), expandable to a maximum of 12MB ・Memory mapped I/O （2）Employed bitmap system for text VRAM and graphic VRAM ・1024x1024dot actual screen ・Display screen selectable from 768x512, 512x512, 512x256 and 256x256. （1）Employed the MC68000 CPU ・Could directly address a 16MB address space. The machine was also provided with an environment to enable users to make their own games using high-level graphics. In contrast to dedicated game machines, which had become the mainstream in the game world, the X68000 aimed for the maximum performance achievable with a PC, and the PC itself was equipped with “Gradius”, a popular arcade game at the time. Superimposed display on a TV screen was also possible using a special-purpose display. For sound, it was equipped with an 8 channel FM stereo sound source and an ADPCM sound source for voice synthesis. It used an MC68000 CPU, was equipped standard with 1 megabyte of RAM, and had a unique sprite function and bitmapped 768x513dot display screen (65,536 colors for each dot). It was called a “personal workstation”, and attracted attention due to its sophisticated graphic capabilities, powerful AV features and distinctive “twin towers” design. The X68000 was a 16-bit personal computer announced by Sharp in 1986, and first marketed in March 1987.

Sharp X68000 Bios