dos fixes and vga modex

[dosdemo] / src / dos / vgaregs.h

diff --git a/src/dos/vgaregs.h b/src/dos/vgaregs.h
new file mode 100644 (file)
index 0000000..15c4090
--- /dev/null
+++ b/src/dos/vgaregs.h
@@ -0,0 +1,85 @@
+#ifndef VGAREGS_H_
+#define VGAREGS_H_
+
+/* ---- VGA registers ---- */
+#define VGA_AC_PORT            0x3c0
+#define VGA_AC_RD_PORT         0x3c1
+#define VGA_SC_ADDR_PORT       0x3c4
+#define VGA_SC_DATA_PORT       0x3c5
+#define VGA_GC_ADDR_PORT       0x3ce
+#define VGA_GC_DATA_PORT       0x3cf
+#define VGA_CRTC_PORT          0x3d4
+#define VGA_CRTC_ADDR_PORT     0x3d4
+#define VGA_CRTC_DATA_PORT     0x3d5
+#define VGA_STAT0_PORT         0x3c2
+#define VGA_STAT1_PORT         0x3da
+#define VGA_MISC_PORT          0x3c2
+#define VGA_MISC_RD_PORT       0x3cc
+
+/* attribute controller registers */
+#define VGA_AC_EN              0x20
+#define VGA_AC_MODE_REG                0x10
+
+/* sequence controller registers */
+#define VGA_SC_RESET_REG       0x00
+#define VGA_SC_CLOCK_REG       0x01
+#define VGA_SC_MAPMASK_REG     0x02
+#define VGA_SC_MEMMODE_REG     0x04
+
+/* graphics controller registers */
+#define VGA_GC_SR_REG          0x00
+#define VGA_GC_SREN_REG                0x01
+#define VGA_GC_ROT_REG         0x03
+#define VGA_GC_MODE_REG                0x05
+#define VGA_GC_MASK_REG                0x08
+
+/* attribute controller mode register (10h) bits */
+#define VGA_AC_MODE_GFX                0x01
+#define VGA_AC_MODE_MONO       0x02
+#define VGA_AC_MODE_LGE                0x04
+#define VGA_AC_MODE_BLINK      0x08
+#define VGA_AC_MODE_PIXPAN     0x20
+#define VGA_AC_MODE_8BIT       0x40
+
+/* misc register bits */
+#define VGA_MISC_COLOR         0x01
+#define VGA_MISC_CPUEN         0x02
+#define VGA_MISC_CLK25         0
+#define VGA_MISC_CLK28         0x04
+#define VGA_MISC_PG1           0x20
+#define VGA_MISC_400           0
+#define VGA_MISC_350           0x40
+#define VGA_MISC_480           0xc0
+
+
+/* CRTC registers */
+#define CRTC_HTOTAL_REG                0x00
+#define CRTC_HEND_REG          0x01
+#define CRTC_HBLSTART_REG      0x02
+#define CRTC_HBLEND_REG                0x03
+#define CRTC_HRETSTART_REG     0x04
+#define CRTC_HRETEND_REG       0x05
+#define CRTC_VTOTAL_REG                0x06
+#define CRTC_OVF_REG           0x07
+#define CRTC_PRESET_REG                0x08
+#define CRTC_MAXSCAN_REG       0x09
+#define CRTC_CURSTART_REG      0x0a
+#define CRTC_CUREND_REG                0x0b
+#define CRTC_STARTH_REG                0x0c
+#define CRTC_STARTL_REG                0x0d
+#define CRTC_CURH_REG          0x0e
+#define CRTC_CURL_REG          0x0f
+#define CRTC_VRETSTART_REG     0x10
+#define CRTC_VRETEND_REG       0x11
+#define CRTC_VEND_REG          0x12
+#define CRTC_OFFSET_REG                0x13
+#define CRTC_UL_REG            0x14
+#define CRTC_VBLSTART_REG      0x15
+#define CRTC_VBLEND_REG                0x16
+#define CRTC_MODE_REG          0x17
+#define CRTC_LCMP_REG          0x18
+
+/* CRTC register bits */
+#define CRTC_VRETEND_PR                0x80
+
+#endif /* VGAREGS_H_ */