Video Functions

setupVideo

Get the cursor position from the BIOS, then save for use

• IN: Nothing
• OUT: Nothing

videoWriteChar

Write a character into video memory

• IN: AL = Ascii char
• OUT: Nothing

videoWriteStr

Write a string into video memory

• IN: DS:SI = Pointer to string
• OUT: Nothing

videoWriteNumPadding32

Write a 32-bit number into video memory with padding

• IN: AX:DX, BX, CH, CL = Number, Base of number, Padding length, Char to pad with
• OUT: Nothing

videoWriteNumPadding

Write a 16-bit number into video memory with padding

• IN: AX, BX, CH, CL = Number, Base of number, Padding length, Char to pad with
• OUT: Nothing

videoWriteNum32

Write a 32-bit number into video memory

• IN: AX:DX, BX = Number, Base of number
• OUT: Nothing

videoWriteNum

Write a 16-bit number into video memory

• IN: AX, BX = Number, Base of number
• OUT: Nothing

videoScroll

Scroll the screen up one line, if cursor is on the last available line.

• IN: Nothing
• OUT: Nothing

videoClearScreen

Clear the screen of text

• IN: Nothing
• OUT: Nothing

videoSaveScreen

Save the contents of the screen into memory

• IN: Nothing
• OUT: Nothing

videoRestoreScreen

Restore the contents of the screen from memory

• IN: Nothing
• OUT: Nothing

videoUpdateBiosCur

Update the BIOS cursor

• IN: Nothing
• OUT: Nothing

videoUpdateCur

Update the hardware cursor

• IN: Nothing
• OUT: Nothing