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Index: rombios.c
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
retrieving revision 1.130
diff -u -w -r1.130 rombios.c
--- rombios.c 13 Feb 2005 08:47:30 -0000 1.130
+++ rombios.c 6 Apr 2005 22:38:16 -0000
@@ -8570,7 +8570,10 @@
use32 386
#define APM_PROT32
#include "apmbios.S"
+
use16 386
+#define APM_PROT16
+#include "apmbios.S"
#define APM_REAL
#include "apmbios.S"
Index: apmbios.S
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/apmbios.S,v
retrieving revision 1.1
diff -u -w -r1.1 apmbios.S
--- apmbios.S 20 Jun 2004 18:27:09 -0000 1.1
+++ apmbios.S 6 Apr 2005 22:38:16 -0000
@@ -1,6 +1,9 @@
// APM BIOS support for the Bochs BIOS
// Copyright (C) 2004 Fabrice Bellard
//
+// 16-bit interface activation
+// Copyright (C) 2005 Struan Bartlett
+//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
@@ -111,13 +114,28 @@
mov bl, #0x4d // 'M'
// bit 0 : 16 bit interface supported
// bit 1 : 32 bit interface supported
- mov cx, #0x2
+ mov cx, #0x3
jmp APMSYM(ok)
;-----------------
; APM real mode interface connect
APMSYM(01):
cmp al, #0x01
+ jne APMSYM(02)
+ jmp APMSYM(ok)
+
+;-----------------
+; APM 16 bit protected mode interface connect
+APMSYM(02):
+ cmp al, #0x02
+ jne APMSYM(03)
+
+ mov bx, #_apm16_entry
+
+ mov ax, #0xf000 // 16 bit code segment base
+ mov si, #0xfff0 // 16 bit code segment size
+ mov cx, #0xf000 // data segment address
+ mov di, #0xfff0 // data segment length
jne APMSYM(03)
jmp APMSYM(ok)
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