X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fdos%2Fvga.h;fp=src%2Fdos%2Fvga.h;h=c6d7070186bfc45d234bf1c0c785dbf5b6308670;hp=0000000000000000000000000000000000000000;hb=b82bab85314bbc57d1c542d4d6687de0cd75c375;hpb=acf706a52fdef3bea3f4ae07b7797395f854c11e

diff --git a/src/dos/vga.h b/src/dos/vga.h
new file mode 100644
index 0000000..c6d7070
--- /dev/null
+++ b/src/dos/vga.h
@@ -0,0 +1,30 @@
+#ifndef VGA_H_
+#define VGA_H_
+
+#include "inttypes.h"
+
+int vga_setmode(int mode);
+
+#ifdef __WATCOMC__
+void vga_setpal(int16_t idx, uint8_t r, uint8_t g, uint8_t b);
+#pragma aux vga_setpal = \
+	"test ax, 0x8000" \
+	"jnz skip_dacaddr" \
+	"mov dx, 0x3c8" \
+	"out dx, al" \
+	"skip_dacaddr:" \
+	"mov dx, 0x3c9" \
+	"mov al, bl" \
+	"shr al, 2" \
+	"out dx, al" \
+	"mov al, bh" \
+	"shr al, 2" \
+	"out dx, al" \
+	"mov al, cl" \
+	"shr al, 2" \
+	"out dx, al" \
+	parm[ax][bl][bh][cl] \
+	modify[dx];
+#endif /* __WATCOMC__ */
+
+#endif	/* VGA_H_ */