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- re-implemented old VBE interface for backward compatibility (USB must be disabled)

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This commit is contained in:
Volker Ruppert 2003-12-31 10:33:27 +00:00
parent 2dae51fc3f
commit 2127a3925b
2 changed files with 17 additions and 3 deletions
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15
bochs/iodev/vga.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: vga.cc,v 1.93 2003-11-06 18:48:01 vruppert Exp $
// $Id: vga.cc,v 1.94 2003-12-31 10:33:27 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -262,6 +262,12 @@ bx_vga_c::init(void)
DEV_register_ioread_handler(this, vbe_read_handler, addr, "vga video", 7);
DEV_register_iowrite_handler(this, vbe_write_handler, addr, "vga video", 7);
}
#if !BX_PCI_USB_SUPPORT
for (addr=VBE_DISPI_IOPORT_INDEX_OLD; addr<=VBE_DISPI_IOPORT_DATA_OLD; addr++) {
DEV_register_ioread_handler(this, vbe_read_handler, addr, "vga video", 7);
DEV_register_iowrite_handler(this, vbe_write_handler, addr, "vga video", 7);
}
#endif
BX_VGA_THIS s.vbe_cur_dispi=VBE_DISPI_ID0;
BX_VGA_THIS s.vbe_xres=640;
BX_VGA_THIS s.vbe_yres=480;
@ -2586,7 +2592,8 @@ bx_vga_c::vbe_read(Bit32u address, unsigned io_len)
// BX_INFO(("VBE_read %x (len %x)", address, io_len));
if (address==VBE_DISPI_IOPORT_INDEX)
if ((address==VBE_DISPI_IOPORT_INDEX) ||
(address==VBE_DISPI_IOPORT_INDEX_OLD))
{
// index register
return (Bit32u) BX_VGA_THIS s.vbe_curindex;
@ -2681,6 +2688,8 @@ bx_vga_c::vbe_write(Bit32u address, Bit32u value, unsigned io_len)
{
// index register
case VBE_DISPI_IOPORT_INDEX:
// legacy index register
case VBE_DISPI_IOPORT_INDEX_OLD:
BX_VGA_THIS s.vbe_curindex = (Bit16u) value;
break;
@ -2688,6 +2697,8 @@ bx_vga_c::vbe_write(Bit32u address, Bit32u value, unsigned io_len)
// data register
// FIXME: maybe do some 'sanity' checks on received data?
case VBE_DISPI_IOPORT_DATA:
// legacy data register
case VBE_DISPI_IOPORT_DATA_OLD:
switch (BX_VGA_THIS s.vbe_curindex)
{
case VBE_DISPI_INDEX_ID: // Display Interface ID check

5
bochs/iodev/vga.h
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: vga.h,v 1.35 2003-10-05 23:15:45 danielg4 Exp $
// $Id: vga.h,v 1.36 2003-12-31 10:33:27 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -36,6 +36,9 @@
#define VBE_DISPI_IOPORT_INDEX 0x01CE
#define VBE_DISPI_IOPORT_DATA 0x01CF
#define VBE_DISPI_IOPORT_INDEX_OLD 0xFF80
#define VBE_DISPI_IOPORT_DATA_OLD 0xFF81
#define VBE_DISPI_INDEX_ID 0x0
#define VBE_DISPI_INDEX_XRES 0x1
#define VBE_DISPI_INDEX_YRES 0x2