Topic       : TOS - The Operating System
Author      : 
Version     : tos.hyp (December 19, 2008)
Subject     : Programmieren/Atari
Nodes       : 3010
Index Size  : 93790
HCP-Version : 5
Compiled on : Atari
@charset    : atarist
@lang       : 
@default    : Title
@help       : 
@options    : +g -i -s +x +zz -t4
@width      : 70
View Ref-File3.7.2.7  Cookie, NVDI                                              TOS

NVDI - Fast replacement of the VDI

The cookie is installed by the 'screen speeder' NVDI, and points to 
the following structure:

typedef struct
{
  uint16_t nvdi_version;      /* Version in BCD format          */
                              /* (e.g. 0x400 for 4.00)          */
  uint32_t nvdi_date;         /* Date in BCD format             */
                              /* (0x18061990 for 18.06.1990)    */
  struct
  {
     unsigned           : 9;  /* Reserved                       */
     unsigned alert     : 1;  /* Error-messages on/off          */
     unsigned           : 1;  /* Reserved                       */
     unsigned linea     : 1;  /* LINE-A                         */
     unsigned mouse     : 1;  /* Dynamic mouse                  */
     unsigned gemdos    : 1;  /* (Fast) GEMDOS character output */
     unsigned error     : 1;  /* Error compatibility            */
     unsigned gdos      : 1;  /* GDOS                           */
  } nvdi_config;
} NVDI_STRUC;

Modifies GEM, GEMDOS, BIOS, XBIOS and the LINE-A vector.