IBM PC CONVERTIBLE Technical Reference page 103

EXTRN
EXTRN
EXTRN
EXTRN
MONO_TBL: WORD
CGA_TBL: WORD
LCD~ONO_TBL:
WORD
LCD_CGA_ TBL: WORD
*****************************************************************
PUBLICS DECLARATION
*****************************************************************
PUBLIC VIDEO_IO_l
PUBLI C PRLSCRN
PUBLIC SELMODE
PUBLIC SELCTYPE
PUBLIC SELCPOS
PUBLI C READ_CURSOR
PUBLIC READ_LPEN
PUBLIC ACLDISP_PAGE
PUBLIC SCROLLUP
PUBLIC SCROLL_DOWN
PUBLI C READ_ALCURRENT
PUBLIC WRITUILCURRENT
PUBLIC WRITE_LCURRENT
PUBLIC SET_COLOR
PUBLIC WRITE_DOT
PUBLIC READ_DOT
PUBLIC WRITE_TTY
SUBTTL VIDEO BIOS - INT lOH
; ********************************************************************
ROUTINE-NAME: VIDEO_JO
FUNCTION: THIS ROUTINE HANDLES THE VIDEO BIOS REQUESTS - INT lOH
ENTRY CONDITIONS:
PURPOSE OF ENTRY: SEE INT 10H DESCRIPTION
INPUT CONDITIONS: SEE INT 10H DESCRIPTION
RESTRICTIONS: NONE
EXIT CONDITIONS:
NORMAL EXIT CONDITIONS: SEE INT 10 DESCRIPTION
ERROR EXIT CONDITIONS: NO ERROR REPORTING INTERFACE IS DEFINED
REGISTERS MODIFIED: ALL REGISTERS EXCEPT AX ARE SAVED UNLESS
THEY ARE USED TO RETURN INFO AS DEFINE
IN THE INT 10H DESCRIPTION
RETURN TYPE: IRET (ALL FLAGS RESTORED)
INTERRUPTS: ENABLED OUR I NG PROCESSI NG
INTERNALLY REFERENCED ROUTINES:
ACLOISP _PAGE,
LCD_REQUEST,
PHYS_DSP _DESCR_REQ,
PRLSCREEN,
READ-ALCURRENT,
READ_CURSOR,
READ_DOT,
READ_LPEN,
SCROLL_UP,
SCROLL_DOWN,
EXTERNALL Y REFERENCED ROUTI NES:
DDS,
BEEP,
KB_NOISE,
GET _RTLREG,
PULRTLREG,
LCDINIT
SELCOLOR,
SELCPOS,
SELCTYPE,
SELMODE,
VIDEO_STATE,
WRITE-ALCURRENT,
WRITE_LCURRENT,
WRITE_DOT,
WRITE_STRI NG,
WRITE_TTY
; *********************************************************************
2-78 ROM BIOS