Re: DUAL MONITORS

 BBS: Inland Empire Archive
Date: 04-23-92 (07:58)             Number: 183
From: FRANCOIS ROY                 Refer#: NONE
  To: MARK REVELS                   Recvd: NO  
Subj: Re: DUAL MONITORS              Conf: (2) Quik_Bas

 MR> I know you can have two display adapters installed and switch between
 MR> them with MODE.COM; anyone know how to do this from QB 4.5???

 <noises of paper shuffling as I trace my PC-Mag issues of Nov. 1985>

 Note: this was written in the GW-Basic days, when only MONO and CGA cards
 existed, but it should work for QB/BC too:

  DEF SEG = 0
  REM Select the MONOCHROME display adapter
  POKE 1040, PEEK(1040) OR 48
  SCREEN 0: WIDTH 40: WIDTH 80: LOCATE , , 1, 12, 13

  DEF SEG = 0
  REM Select the CGA display adapter
  POKE 1040, (PEEK(1040) AND 207) OR 16
  SCREEN 1, 0, 0, 0: SCREEN 0: WIDTH 40: LOCATE , , 1, 7, 7

 The article also says: "Before switching monitor types, it is a good idea to
 record (in an array) the numbers that are contained in memory locations 1097
 to 1126.  These values can then be confidently restored after the return to
 the first display."

--- ME2_1104
 * Origin: Out of String Space - the Final Frontier (Fidonet 1:163/506.2)