1 files changed, 20 insertions, 0 deletions
diff --git a/os/boot/puma/outb.c b/os/boot/puma/outb.c
new file mode 100644
index 00000000..e66c994e
--- /dev/null
+++ b/os/boot/puma/outb.c
@@ -0,0 +1,20 @@
+typedef	unsigned short	ushort;
+typedef	unsigned char	uchar;
+
+enum {
+	IsaIOBase		= 0xf0000000,
+	IsaMemBase	= 0xe0000000,
+
+	IOBase		= 0x300,
+	MemBase		= 0xc0000,
+
+	TxFrame		= 0x0a00,
+};
+
+#define	regw(reg, val)		*((ushort *)IsaMemBase + MemBase + (reg)) = (val)
+
+void
+main(void)
+{
+	regw(TxFrame, 0x1234);
+}