Vertical Vertical
scroll aspect
Mode
N0
Description
Characteristics
Notes
BSE GBE WHITD JMP
normal mode
RGB ref. pulse position = line 20... 22 (odd field) mode after power on
0
0
0
1
0
1
0
0
0
0
(for 4:3 source, Letterbox) end of V-blanking = line 22 (odd field)
guard band = 1.5 lines
with default settings
normal mode
RGB reference pulse position
adjustable,
RGB ref. pulse position = line (RPP + 16)
...(RPP + 18) (odd field)
(for 4:3 source, Letterbox)
with user defined settings
N1
VGA
S0
0
0
guard band adjustable
end of V-blanking = line (RPP + 18) (odd field)
guard band = Guard band/2 [lines]
VGA or SVGA mode
with user defined V-posi-
tion/V-size
RGB ref. pulse position = line 20... 22 (odd field) Vertical scroll/Vertical aspect
end of V-blanking = line 22 (odd field)
guard band = 1.5 lines
for user defined V-position/V-
size,
variable variable
0
0
0
0
1
0
0
0
WHITD disables RGB white
level ref. pulses
shrink mode 75%
(for 16:9 source)
with default settings
RGB ref. pulse position = line 20... 22 (odd field) Vertical aspect = -50
end of V-blanking = line 22 (odd field)
guard band = 1.5 lines
causes V-reduction to 75%,
JMP = 0 causes V-shrink incl.
flyback
0
0
-50
-50
shrink mode 75%
RGB ref. pulse positon adjust.,
JMP = 1 causes V-shrink excl.
flyback,
RGB ref. pulse position = line (RPP + 16)
...(RPP + 18) (odd field)
(for 16:9 source)
with user defined settings
end of V-blanking = line (RPP + VBE + 25) (odd)
start of reduced V-ramp = line (RPP + 19) (odd)
guard band = Guard band/2 [lines]
S1
1
1
1
1
WHITD disables RGB white
level ref. pulses
guard band adjustable
MICRONAS [ MICRONAS ]
