Import sources from 2011-03-30 iso image

1 files changed, 82 insertions, 0 deletions

diff --git a/sys/src/cmd/aux/vga/ibm8514.c b/sys/src/cmd/aux/vga/ibm8514.c
new file mode 100755
index 000000000..f7d504aca
--- /dev/null
+++ b/sys/src/cmd/aux/vga/ibm8514.c
@@ -0,0 +1,82 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+#include "pci.h"
+#include "vga.h"
+
+/*
+ * IBM 8514/A Graphics Coprocessor.
+ */
+enum {
+	Subsys		= 0x42E8,	/* Subsystem Status (R), Control (W) */
+	Advfunc		= 0x4AE8,	/* Advanced Function Control */
+	CurY		= 0x82E8,	/* Current Y Position */
+	CurX		= 0x86E8,	/* Current X Position */
+	DestyAxstp	= 0x8AE8,	/* Destination Y Position/Axial Step Constant */
+	DestxDiastp	= 0x8EE8,	/* Destination X Position/Diagonal Step Constant */
+	ErrTerm		= 0x92E8,	/* Error Term */
+	MajAxisPcnt	= 0x96E8,	/* Major Axis Pixel Count */
+	GPstat		= 0x9AE8,	/* Graphics Processor Status (R) */
+	Cmd		= 0x9AE8,	/* Drawing Command (W) */
+	ShortStroke	= 0x9EE8,	/* Short Stroke Vector (W) */
+	BkgdColor	= 0xA2E8,	/* Background Colour */
+	FrgdColor	= 0xA6E8,	/* Foreground Colour */
+	WrtMask		= 0xAAE8,	/* Bitplane Write Mask */
+	RdMask		= 0xAEE8,	/* Bitplane Read Mask */
+	ColorCmp	= 0xB2E8,	/* Colour Compare */
+	BkgdMix		= 0xB6E8,	/* Background Mix */
+	FrgdMix		= 0xBAE8,	/* Foreground Mix */
+	Multifunc	= 0xBEE8,	/* Multifunction Control */
+	PixTrans	= 0xE2E8,	/* Pixel Data Transfer */
+};
+
+enum {					/* Multifunc Index */
+	MinAxisPcnt	= 0x0000,	/* Minor Axis Pixel Count */
+	ScissorsT	= 0x1000,	/* Top Scissors */
+	ScissorsL	= 0x2000,	/* Left Scissors */
+	ScissorsB	= 0x3000,	/* Bottom Scissors */
+	ScissorsR	= 0x4000,	/* Right Scissors */
+	MemCntl		= 0x5000,	/* Memory Control */
+	PixCntl		= 0xA000,	/* Pixel Control */
+	MultMisc	= 0xE000,	/* Miscellaneous Multifunction Control (S3) */
+	ReadSel		= 0xF000,	/* Read Register Select (S3) */
+};
+
+static void
+load(Vga* vga, Ctlr*)
+{
+	outportw(Pixmask, 0x00);
+	outportw(Subsys, 0x8000|0x1000);
+	outportw(Subsys, 0x4000|0x1000);
+	outportw(Pixmask, 0xFF);
+
+	outportw(FrgdMix, 0x47);
+	outportw(BkgdMix, 0x07);
+
+	outportw(Multifunc, ScissorsT|0x000);
+	outportw(Multifunc, ScissorsL|0x000);
+	outportw(Multifunc, ScissorsB|(vga->vmz/vga->mode->x-1));
+	outportw(Multifunc, ScissorsR|(vga->mode->x-1));
+
+	outportw(WrtMask, 0xFFFF);
+	outportw(Multifunc, PixCntl|0x0000);
+}
+
+static void
+dump(Vga*, Ctlr* ctlr)
+{
+	printitem(ctlr->name, "Advfunc");
+	Bprint(&stdout, "%9.4uX\n", inportw(Advfunc));
+	printitem(ctlr->name, "Subsys");
+	Bprint(&stdout, "%9.4uX\n", inportw(Subsys));
+}
+
+Ctlr ibm8514 = {
+	"ibm8514",			/* name */
+	0,				/* snarf */
+	0,				/* options */
+	0,				/* init */
+	load,				/* load */
+	dump,				/* dump */
+};