(1) Vertical direction display cycle
(1.1) Macintosh17
VD
VST (DWN = H)
VST (DWN = L)
VCK
(1.2) SVGA
VD
VST (DWN = H)
VST (DWN = L)
VCK
(1.3) PAL
VD
VST (DWN = H)
VST (DWN = L)
VCK
(1.4) VGA/NTSC
VD
VST (DWN = H)
VST (DWN = L)
VCK
(1.5) PC98
VD
VST (DWN = H)
VST (DWN = L)
VCK
LCX016AL
1 2 34
621 622 623 624
Vertical display cycle 624H
1234
597 598 599 600
Vertical display cycle 600H
123 4
569 570 571 572
Vertical display cycle 572H
12 34
477 478 479 480
Vertical display cycle 480H
1 23 4
397 398 399 400
Vertical display cycle 400H
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