Fairlight CVI, Руководство пользователя

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R S232 PORT C O N T R O L U P DATE
a nd Colourize Cont
r
o
l
Menus, to perform the required colour
tra ns formations. When the COLOURIZE button is turned off
a g a i n , the processor performs one normalisation pass through the
P a l e t te RAM.
When using the RS232C link to access the Palette, it is advisable
to
l e a v e the · COLOURIZE button off to stop the processor from
a ccessing
the Palette.
The command parameters
b,g,r,B,G
and
R
are ASCII hex digits,
a n d supply the lower and upper palette address limits for each of
blue, g r e e n and red components.
"bgr"
specifies the lower limi ts;
"BGR"
specifies the upper limits.
So
for example, the instruction
@LM 370 A9F
tells t h e CVI to prepare to load the Pal e t
t
e locations that have
b l u e add ress between
3
and
A,
green address between
7
and
9,
a n d
red a d d ress
b
e
t
ween
0
an
d F . The instruction
@LM 1 26 1 26
p r e p a res the CVI to load the single Palette location with blue
a d d ress 1 , green address 2 an d red address 6. The i nstruc tio n
@LMOOO FFF
t e l l s the CVI to prepare to load the entire Palette.
The order of the Palette addresses between the lower add ress
bgr
a n d the hi gher address
BGR
is given by:
for
blue
=
b to B do
for green
=
g
to
G
do
for red
=
r t o R do
Load Palette Address (blue,gree n,red)
next red
next green
next
blue
34
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REV.
7
SOFTWARE UPDATE