From:	"Marcus" <mesthlm AT hem DOT passagen DOT se>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Get video modes
Date:	Tue, 15 Feb 2000 00:11:19 +0100
Organization:	Telenordia
Lines:	38
Message-ID:	<88a255$dhi$1@cubacola.tninet.se>
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi!
Could anyone see what's wrong with this code? I get the information correct
but it's something wrong and I don't know what.

Here's the code:
unsigned short modes[100];
getmodes(vbeinfo.videomodeptr, modes, 200);

void* getmodes(unsigned int modeptr, void* dest, int maxlength)
{
   int offset = (modeptr>>12 & 0xFFFF0) + (modeptr & 0xFFFF);
   dosmemget(offset, maxlength, dest);
   return dest;
}

And the struct:
struct VBEINFO {
  char vbesignature[4]; // VBE Signature
  unsigned short vbeversion; // VBE Version
  unsigned int oemstringptr; // Pointer to OEM String
  unsigned char capabilities[4]; // Capabilities of graphics cont.
  unsigned int videomodeptr; // Pointer to Video Mode List
  unsigned short totalmemory; // number of 64Kb memory blocks
  unsigned short oemsoftwarerev; // VBE implementation Software revision
  unsigned int oemvendornameptr; // Pointer to Vendor Name String
  unsigned int oemproductnameptr; // Pointer to Product Name String
  unsigned int oemproductrevptr; // Pointer to Product Revision String
  char reserved[222]; // Reserved for VBE implementation scratch area
  char oemdata[256]; // Data Area for OEM Strings
};

Thanks for all help!

--
/regards Marcus

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