Vga Controller - Boser HS-4010 Manual

WT_DISABLE

2.12 VGA Controller

The C&T 655xx family supports a wide variety of monochrome and
color Single-Panel, Single-Drive (SS) and Dual-Panel, Dual Drive (DD)
standard and high-res passive STN and active matrix TFT/MIN LCD,
and EL panels. For monochrome panels, up to 64 gray scales are
supported. Up to 4096 different colors can be displayed on passive
STN LCDs and up to 16 M colors on 24-bit active matrix LCDs.
The HS-4010 uses C&T 65550 chipset. Provides 2.0 mm pitch 44-pin
on-board internal connector for flat panel connection; and a external
DB15 analogy R.G.B. output connector for CRT monitor. By BIOS
setup, user may use one of the display devices or both. Please use at
the same resolution when both display. Please contact with your
dealer if connection to a new specification flat panel.
The HS-4010 offers a variety of programmable features to optimize
display quality. Vertical centering and stretching are provided for
handling modes with less than 480 lines on 480 - line panels.
Horizontal and vertical stretching capabilities are also available for both
text and graphics modes for optimal display of VGA text and graphics
modes on 800x600 and 1024x768 panels.
18
PUSH DX
MOV DX,WDT_ET_RF
IN AL,DX
POP DX
POP AX
RET
PUSH AX
PUSH DX
MOV DX,WDT_DIS
IN AL,DX
POP DX
POP AX
RET
; refresh the watch-dog timer
; get back AX, DX
; disable the watch-dog timer
; get back AX, DX