//-------------------------------------------------------------------
//	romfonts.cpp
//
//	This utility executes a standard BIOS routine that gives the
//	real-mode address of each character-glyph table in firmware.
//
//	  compile using:  $ g++ romfonts.cpp int86.cpp -o romfonts
//
//	programmer: ALLAN CRUSE
//	written on: 09 SEP 2003
//	revised on: 04 SEP 2005  -- replacing svgalib with 'int86()'
//-------------------------------------------------------------------

#include <stdio.h>	// for printf() 
#include "int86.h"	// for init8086(), int86()

char *legend[ 8 ] = { "", "", "8x14 font (0x00-0xFF)", "8x8 font (0x00-0x7F)", 
			"8x8 font (0x80-0xFF)", "9x14 font (alternates)", 
			"8x16 font (0x00-0xFF)", "9x16 font (alternates)" };

int main( void )
{
	init8086();	// maps memory for access to firmware services
	printf( "\n\tReal-mode addresses for the " );
	printf( "built-in character-glyph tables\n" );
	for (int i = 2; i < 8; i++)
		{
		struct vm86plus_struct	vm = {0};
		vm.regs.eax = 0x1130;		// Get Font Info
		vm.regs.ebx = (i << 8);		// which font ID
		int86( 0x10, vm );		// invokes BIOS 
		printf( "\n\t\t%04X:%04X ", vm.regs.es, vm.regs.ebp );
		printf( " %s ", legend[ i ] );
		}
	printf( "\n\n" );
}