include vmm.inc
mov     al, Char        ; character to write
VMMCall Out_Mono_Chr
mov     eax, 0          ; write character and attribute
mov     bl, Char        ; character to write
mov     bh, Attr        ; attribute to write
VMMCall Out_Mono_Chr
 Writes a character to the current position on the secondary display.
If the EAX register is not zero, the service writes the character in the AL register and applies the normal attribute. Otherwise, it writes the character and attribute pair in the BX register. Uses Flags.
If the linefeed or carriage return character is written, the service automatically adjusts the cursor position, scrolling the screen if necessary.
This service has no effect in the retail version of Windows. It is intended to be used with the debugging version.
Out_Mono_String