From: John Hodge <tpg@mutabah.net>
Date: Tue, 25 Nov 2014 02:13:52 +0000 (+0800)
Subject: Modules/VGA - Start on a generic VGA driver (VGA driver, and library for derivatives)
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=e47f509e07718893b837826f981085829cf16c84;p=tpg%2Facess2.git

Modules/VGA - Start on a generic VGA driver (VGA driver, and library for derivatives)
---

diff --git a/KernelLand/Modules/Display/VGA/vgaregs.c b/KernelLand/Modules/Display/VGA/vgaregs.c
new file mode 100644
index 00000000..c2be21f6
--- /dev/null
+++ b/KernelLand/Modules/Display/VGA/vgaregs.c
@@ -0,0 +1,57 @@
+/*
+ * Acess2 VGA Driver
+ * - By John Hodge (thePowersGang)
+ */
+
+
+// === CODE ===
+void VGA_WriteAttr(Uint8 Index, Uint8 Data)
+{
+	Index &= 0x1F;
+	SHORTLOCK(&glVGA_Attr);
+	inb(0x3DA);
+	outb(0x3C0, Index);
+	outb(0x3C0, Data);
+	SHORTREL(&glVGA_Attr);
+}
+
+Uint8 VGA_ReadAttr(Uint8 Index)
+{
+	Uint8	ret;
+	SHORTLOCK(&glVGA_Attr);
+	inb(0x3DA);
+	outb(0x3C0, Index);
+	ret = inb(0x3C1);
+	SHORTREL(&glVGA_Attr);
+	return ret;
+}
+
+void VGA_WriteSeq(Uint8 Index, Uint8 Data)
+{
+	outb(0x3C4, Index);
+	outb(0x3C5, Data);
+}
+Uint8 VGA_ReadSeq(Uint8 Index)
+{
+	outb(0x3C4, Index);
+	return inb(0x3C5);
+}
+void VGA_WriteGraph(Uint8 Index, Uint8 Data)
+{
+	outb(0x3CE, Index);
+	outb(0x3CF, Data);
+}
+Uint8 VGA_ReadGraph(Uint8 Index)
+{
+	outb(0x3CE, Index);
+	return inb(0x3CF);
+}
+
+void VGA_WriteMiscOut(Uint8 Data)
+{
+	outb(0x3C2, Data);
+}
+Uint8 VGA_ReadMiscOut(void)
+{
+	return inb(0x3CC);
+}