ASTRO VG-877 - LHPS4 [20 H 66 H]: 0.5;0.25-Pixel Scroll Data Acquisition

Chapter 2 INDIVIDUAL FORMATS FOR VG CONTROL COMMANDS
145
2.68 LHPS4 [20H 66H]: 0.5/0.25-pixel scroll data
acquisition
Function: This command gets the 0.5- or 0.25-pixel scroll data of the designated
program number. When the program has any number from 1001 to 2000,
the command reads out from the fixed data. When the program number is
9999, the command reads the data from the command work RAM.
Sequence: Type 3
Parameters:
STX
1 byte
02H
VG4CMD
1 byte
FDH
LHPS4
2 bytes
20H 66H
Program number
1 to 4 bytes
“0” to “2000”, “9999”
ETX
1 byte
03H
Fig. 2-68-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
0.5/0.25-pixel scroll
ON/OFF
1 byte
“0” = OFF, “1” = ON
,
1 byte
2CH (Delimiter)
Movement direction
1 byte
“0” = Left, “1” = Right *by 0.25 unit
Note) if the value is set by 0.125, it automatically
becomes “0” and returns.
,
1 byte
2CH (Delimiter)
V direction offset value
1 to 3 bytes
"0" to "100" %
,
1 byte
2CH (Delimiter)
Movement amount
1 to 5 bytes
“0” to “25475” *by 0.125 unit
ETX
1 byte
03H
Fig. 2-68-2