Wyse WY-99GT User Manual page 52

A-18
Table C-1 Continued
Hercules and CGA Modes
Table C-2 Hercules and CGA
Command Format Summary
WY-99GT User's Guide
Sequence CTRL Code Description
ESC
9
ESC:
ESC;
ESC [ ? 38 1
ESC'
ESC a
ESC b
ESC c
ESC d
ESC e
ESC f
ESC g
ESC h
ESC i
ESCj
ESC k
ESC 1
ESCm
ESC n
ESC o
Selects 81 characters per line
Selects 121 characters per line
Selects 133 characters per line
Selects VT200 7-bit mode
Selects solid line
Selects dotted line
Selects dot-dashed line
Selects short dashed line
Selects long dashed line
Selects solid line
Selects solid line
Selects solid line
Selects solid line
Selects dotted line
Selects dot-dashed line
Selects short dashed line
Selects long dashed line
Selects solid line
Selects solid line
Selects solid line
In both of these modes, display bytes 0-92 and 98-FF are written
directly to the screen. Display bytes 93-97 are command bytes.
To display the byte corresponding to the command range 93-97H,
that byte must be followed by a null. Table C-2 summarizes the
command format recognized by both modes.
Command
Byte Format
93
+
MSB
+
LSB
94 + 7-bit signed byte
95 + 1 byte
95 + 01 + MSB + LSB
96
Function
Sets the video RAM address for the current page.
Note that the MSB is always set high.
Indicates the number of location to move the current
video address offset.
Creates a horizontal line. The byte is in the 2
through 255 range, indicating the number of
consecutive words in the line.
Alternate format to create a horizontal line where 01
is a long function and MSB
+
LSB indicates the
number of words in the line.
Replaces leading NUL in character mode control
sequences when in block (Hercules) mode.