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Chapter 2 TV screen

2.1 2.1 TV screen mode

VDP2 can display images on NTSC and PAL TVs, 31kHz monitors, and high-definition monitors. There are three TV screen modes for displaying images: normal mode, high-resolution mode, and dedicated monitor mode. The screen scanning method can be selected from three types: non-interlace, single density interlace, and double density interlace. There is also a register that shows the TV scanning status.
∙ Selectable TV screen mode and graphic mode and the resolution at that time are shown in Table 2.1.
Note that special settings are required to specify dedicated high-resolution graphic A and dedicated high-resolution graphic B.

Table 2.1 TV screen mode 
 TV screen 
 Mode 
 Graphic 
 Mode 
 Interlaced 
 Mode 
 Resolution 
 Horizontal x Vertical (Pixels) 
 Restrictions when using 
 Normal 
 Normal 
 Graphic A 
 Non-interlaced 
 320 × 224 
 
 320 × 240 
 
 320 × 256 
 PAL method only 
 Interlace 
 320 × 448 
 
 320 × 480 
 
 320 × 512 
 PAL method only 
 Normal 
 Graphic B 
 Non-interlaced 
 352 × 224 
 
 352 × 240 
 
 352 × 256 
 PAL method only 
 Interlace 
 352 × 448 
 
 352 × 480 
 
 352 × 512 
 PAL method only 
 High Resolution 
 High Resolution 
 Graphic A 
 Non-interlaced 
 640 × 224 
 
 640 × 240 
 
 640 × 256 
 PAL method only 
 Interlace 
 640 × 448 
 
 640 × 480 
 
 640 × 512 
 PAL method only 
 High-Res 
 Graphic B 
 Non-interlaced 
 704 × 224 
 
 704 × 240 
 
 704 × 256 
 PAL method only 
 Interlace 
 704 × 448 
 
 704 × 480 
 
 704 × 512 
 PAL method only 
 Dedicated Monitor 
 Dedicated Normal 
 Graphic A 
 Non-interlaced 
 320 × 480 
 31kHz monitor only 
 Dedicated normal 
 Graphic B 
 Non-interlaced 
 352 × 480 
 High-definition monitor only 
 High-Res 
 Graphic A 
 Non-interlace 
 640 × 480 
 31kHz monitor only 
 High-resolution 
 Graphic B 
 Non-interlaced 
 704 × 480 
 High-definition monitor only

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