1 files changed, 66 insertions, 0 deletions
diff --git a/src/include/pc80/vga_io.h b/src/include/pc80/vga_io.h
new file mode 100644
index 0000000000..64c62c7697
--- /dev/null
+++ b/src/include/pc80/vga_io.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C)  2007  Luc Verhaegen <libv@skynet.be>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef VGA_IO_H
+#define VGA_IO_H
+
+/*
+ * All IO necessary to poke VGA registers.
+ */
+
+/* VGA Enable */
+unsigned char vga_enable_read(void);
+void vga_enable_write(unsigned char value);
+void vga_enable_mask(unsigned char value, unsigned char mask);
+
+/* Miscellaneous register */
+unsigned char vga_misc_read(void);
+void vga_misc_write(unsigned char value);
+void vga_misc_mask(unsigned char value, unsigned char mask);
+
+/* Sequencer registers. */
+unsigned char vga_sr_read(unsigned char index);
+void vga_sr_write(unsigned char index, unsigned char value);
+void vga_sr_mask(unsigned char index, unsigned char value, unsigned char mask);
+
+/* CR registers. */
+unsigned char vga_cr_read(unsigned char index);
+void vga_cr_write(unsigned char index, unsigned char value);
+void vga_cr_mask(unsigned char index, unsigned char value, unsigned char mask);
+
+/* Attribute registers. */
+unsigned char vga_ar_read(unsigned char index);
+void vga_ar_write(unsigned char index, unsigned char value);
+void vga_ar_mask(unsigned char index, unsigned char value, unsigned char mask);
+
+/* Graphics registers. */
+unsigned char vga_gr_read(unsigned char index);
+void vga_gr_write(unsigned char index, unsigned char value);
+void vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask);
+
+/* DAC functions. */
+void vga_palette_enable(void);
+void vga_palette_disable(void);
+unsigned char vga_dac_mask_read(void);
+void vga_dac_mask_write(unsigned char mask);
+void vga_dac_read_address(unsigned char address);
+void vga_dac_write_address(unsigned char address);
+unsigned char vga_dac_data_read(void);
+void vga_dac_data_write(unsigned char data);
+
+#endif /* VGA_IO_H */