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Screen Control mechanism,made by LSI developed originally by SHARP , is the most characteristic part of X68000. In this chapter, it is explained about several screen modes,screen control mechanisms.

X68000 has a very strong screen control mechanism that isn't seen in other personal computers. Almost screen view required in business-use computers are characters, and very easy graph view, so their hardwares have screens for characters (including kanji) and graphics in about 16 colors. On the other hand, X68000 is designed for deeling with several requirement about “views”,such as real time action games,high definition with tens of thousands colors for example ray tracings, window system with several character fonts, without overload of CPU.

Figure 1(p.162) shows screen construction of X68000. X68000 has indivisual 4 types of screens:Graphic screen(1 to 4),text screen(4),sprite (128 max ,32 max on same horizontal lines),BackGround screens (up to 2). And X68000 composes them and video screen (super impose),then show in CRT.

[p.162]

These screens have respective characters and make it possible to be variegated expression by using properly for purposes or using combined. Here it is collected each of construction and characters, about every graphic,text,BG,and sprite view easily. Figure 2(p.163) shows constructions of each screen,graphic,text BG, and sprite screen.

[p.163]

X68000 Screen Configuration

Examples

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