diff options
| -rw-r--r-- | sys/boot/i386/cdboot/cdboot.s | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/boot/i386/cdboot/cdboot.s b/sys/boot/i386/cdboot/cdboot.s index b40752b..cd16966 100644 --- a/sys/boot/i386/cdboot/cdboot.s +++ b/sys/boot/i386/cdboot/cdboot.s @@ -485,11 +485,11 @@ twiddle: push %ax # Save ret # -# Enable A20. Put upper limit on amount of time we wait for the +# Enable A20. Put an upper limit on the amount of time we wait for the # keyboard controller to get ready (65K x ISA access time). If -# we wait more than that amount it's likely that the hardware -# is legacy-free and simply doesn't have keyboard controller -# and don't need enabling A20 at all. +# we wait more than that amount, the hardware is probably +# legacy-free and simply doesn't have a keyboard controller. +# Thus, the A20 line is already enabled. # seta20: cli # Disable interrupts xor %cx,%cx # Clear |
