Use skip of 2 for the magic A20 numbers

diff --git a/bcopy32.inc b/bcopy32.inc
index 5e3fda2..9931f10 100644 (file)
--- a/bcopy32.inc
+++ b/bcopy32.inc
@@ -139,11 +139,12 @@ bcopy:            push eax
 %define IO_DELAY_PORT  80h             ; Invalid port (we hope!)
 %define disable_wait   32              ; How long to wait for a disable
 
+; Note the skip of 2 here
 %define A20_DUNNO      0               ; A20 type unknown
-%define A20_NONE       1               ; A20 always on?
-%define A20_BIOS       2               ; A20 BIOS enable
-%define A20_KBC                3               ; A20 through KBC
-%define A20_FAST       4               ; A20 through port 92h
+%define A20_NONE       2               ; A20 always on?
+%define A20_BIOS       4               ; A20 BIOS enable
+%define A20_KBC                6               ; A20 through KBC
+%define A20_FAST       8               ; A20 through port 92h
 
 slow_out:      out dx, al              ; Fall through
 
@@ -167,7 +168,6 @@ try_enable_a20:
 ; If the A20 type is known, jump straight to type
 ;
                mov bp,[cs:A20Type]
-               add bp,bp                       ; Convert to word offset
                jmp word [cs:bp+A20List]
 
 ;
@@ -293,7 +293,6 @@ disable_a20:
 %endif
 
                mov bp,[cs:A20Type]
-               add bp,bp                       ; Convert to word offset
                jmp word [cs:bp+A20DList]
 
 a20d_bios: