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VGA_ioport_in: Fake the occurrence of the vertical refresh when no 

graphic mode has been set.
This commit is contained in:
Christian Costa 2002-04-19 00:05:38 +00:00 committed by Alexandre Julliard
parent b8ae37ccda
commit de61088197
1 changed files with 10 additions and 1 deletions
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11
dlls/winedos/vga.c
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@ -43,6 +43,8 @@ static int vga_height;
static int vga_depth;
static BYTE vga_text_attr;
static BOOL vga_mode_initialized = FALSE;
static CRITICAL_SECTION vga_lock = CRITICAL_SECTION_INIT("VGA");
typedef HRESULT (WINAPI *DirectDrawCreateProc)(LPGUID,LPDIRECTDRAW *,LPUNKNOWN);
@ -316,6 +318,8 @@ int VGA_SetMode(unsigned Xres,unsigned Yres,unsigned Depth)
par.Depth = (Depth < 8) ? 8 : Depth;
vga_mode_initialized = TRUE;
MZ_RunInThread(VGA_DoSetMode, (ULONG_PTR)&par);
return par.ret;
}
@ -734,7 +738,12 @@ BYTE VGA_ioport_in( WORD port )
/* since we don't (yet?) serve DOS VM requests while VGA_Poll is running,
we need to fake the occurrence of the vertical refresh */
ret=vga_refresh?0x00:0x08;
vga_refresh=0;
if (vga_mode_initialized)
vga_refresh=0;
else
/* Also fake the occurence of the vertical refresh when no graphic
mode has been set */
vga_refresh=!vga_refresh;
break;
default:
ret=0xff;