2 * Copyright (C) 2007 Luc Verhaegen <libv@skynet.be>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 51
16 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 * All IO necessary to poke VGA registers.
27 unsigned char vga_enable_read(void);
28 void vga_enable_write(unsigned char value);
29 void vga_enable_mask(unsigned char value, unsigned char mask);
31 /* Miscellaneous register */
32 unsigned char vga_misc_read(void);
33 void vga_misc_write(unsigned char value);
34 void vga_misc_mask(unsigned char value, unsigned char mask);
36 /* Sequencer registers. */
37 unsigned char vga_sr_read(unsigned char index);
38 void vga_sr_write(unsigned char index, unsigned char value);
39 void vga_sr_mask(unsigned char index, unsigned char value, unsigned char mask);
42 unsigned char vga_cr_read(unsigned char index);
43 void vga_cr_write(unsigned char index, unsigned char value);
44 void vga_cr_mask(unsigned char index, unsigned char value, unsigned char mask);
46 /* Attribute registers. */
47 unsigned char vga_ar_read(unsigned char index);
48 void vga_ar_write(unsigned char index, unsigned char value);
49 void vga_ar_mask(unsigned char index, unsigned char value, unsigned char mask);
51 /* Graphics registers. */
52 unsigned char vga_gr_read(unsigned char index);
53 void vga_gr_write(unsigned char index, unsigned char value);
54 void vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask);
57 void vga_palette_enable(void);
58 void vga_palette_disable(void);
59 unsigned char vga_dac_mask_read(void);
60 void vga_dac_mask_write(unsigned char mask);
61 void vga_dac_read_address(unsigned char address);
62 void vga_dac_write_address(unsigned char address);
63 unsigned char vga_dac_data_read(void);
64 void vga_dac_data_write(unsigned char data);