8086: while I remember document the early 8086 test in case we need it

diff --git a/Kernel/lowlevel-8086.S b/Kernel/lowlevel-8086.S
index 6e08d33..f408bd0 100644 (file)
--- a/Kernel/lowlevel-8086.S
+++ b/Kernel/lowlevel-8086.S
@@ -288,6 +288,11 @@ set_irqvec:
  *
  *     We don't bother trying to tell 186/188 and 86/89 bus width as we
  *     don't need to know.
+ *
+ *     If we need to we can detect an early 8086 by setting a trace trap
+ *     and seeing if we take it on pop of a segment register. If we do it's
+ *     an early one. If it doesn't then its a later one (and if it also
+ *     doesn't take one on push of a segment register its a Harris CMOS one
  */
 
 test_cputype: