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- /*====================================================*/
- /* DVVER.C */
- /* */
- /* (c) Copyright 1988 Ralf Brown All Rights Reserved */
- /* May be freely copied for noncommercial use, */
- /* provided that this copyright notice remains intact */
- /* and any changes are clearly indicated in the */
- /* comment blocks preceding functions */
- /*====================================================*/
-
- #include "tvapi.h"
-
- /*======================================================*/
- /* DVver--return DESQview version, -1 if not loaded */
- /* Ralf Brown 4/3/88 */
- /*======================================================*/
-
- WORD pascal DVver(void)
- {
- #ifdef __TURBOC__
- _AX = 0x2B01 ;
- _CX = 0x4445 ;
- _DX = 0x5351 ;
- geninterrupt(0x21);
- if (_AL == 0xFF)
- return -1 ;
- else if (_BX == 2) /* early copies of 2.00 return 2 rather than 0x0200 */
- return 0x0200 ;
- else return _BX ;
- #else
- union REGS regs ;
-
- regs.x.ax = 0x2B01 ;
- regs.x.cx = 0x4445 ;
- regs.x.dx = 0x5351 ;
- int86(0x21,®s,®s) ;
- if (regs.h.al == 0xFF)
- return -1 ;
- else if (regs.x.bx == 2)
- return 0x0200 ;
- else return regs.x.bx ;
- #endif __TURBOC__
- }
-
- /* End of DVVER.C */
-