New boot blocks, from Bruce Evans, and NetBSD fixes. Allows kernel to

be loaded above 1MB.  Same boot code for floppies now.  Speed improvements.
etc etc etc. (I don't have much history on this, but then have been tested)

1 files changed, 37 insertions, 1 deletions

diff --git a/sys/i386/boot/biosboot/io.c b/sys/i386/boot/biosboot/io.c
index 237b21c..5327f88 100644
--- a/sys/i386/boot/biosboot/io.c
+++ b/sys/i386/boot/biosboot/io.c
@@ -28,7 +28,19 @@
 
 /*
  * HISTORY
- * $Log:	io.c,v $
+ * $Log: io.c,v $
+ * Revision 1.3  1993/07/11  12:02:24  andrew
+ * Fixes from bde, including support for loading @ any MB boundary (e.g. a
+ * kernel linked for 0xfe100000 will load at the 1MB mark) and read-ahead
+ * buffering to speed booting from floppies.  Also works with aha174x
+ * controllers in enhanced mode.
+ *
+ * Revision 1.2  1993/06/18  02:28:59  cgd
+ * make it *do* something when loading the kernel, a la sun twiddling-thing
+ *
+ * Revision 1.1  1993/03/21  18:08:38  cgd
+ * after 0.2.2 "stable" patches applied
+ *
  * Revision 2.2  92/04/04  11:35:57  rpd
  * 	Fixed for IBM L40's A20 initialization.
  * 	[92/03/30            rvb]
@@ -82,6 +94,8 @@ printf(format,data)
 {
 	int *dataptr = &data;
 	char c;
+
+	reset_twiddle();
 	while (c = *format++)
 		if (c != '%')
 			putchar(c);
@@ -187,3 +201,25 @@ int len;
 	while (len-- > 0)
 		*to++ = *from++;
 }
+
+static int tw_on;
+static int tw_pos;
+static char tw_chars[] = "|/-\\";
+
+reset_twiddle()
+{
+	if (tw_on)
+		putchar('\b');
+	tw_on = 0;
+	tw_pos = 0;
+}
+
+twiddle()
+{
+	if (tw_on)
+		putchar('\b');
+	else
+		tw_on = 1;
+	putchar(tw_chars[tw_pos++]);
+	tw_pos %= (sizeof(tw_chars) - 1);
+}