To:	opendos AT delorie DOT com
Message-Id:	<AA22LMrC11@insect.ief.spb.su>
Organization:	Inst. of Evolutionary Physiology & Biochemistry,
	St.Petersburg
From:	pavel AT insect DOT ief DOT spb DOT su (Pavel Ozerski)
Date:	Wed, 13 May 98 10:49:22 +0300
Reply-To:	pavel AT insect DOT ief DOT spb DOT su
Subject:	Re: Multi-Config in Config.sys

Pierre-Philippe Ravier wrote:

>In Caldera Open-Dos 7.02, is there a way to do a multi-config config.sys and
>autoexec.bat like MS-DOS 6 and higher can do ? I know that the OpenDos can't


DR-DOS supports another features to multi-configuration.
All these CONFIG.SYS statements are described in DOSBOOK.
In fact, DR-DOS has a built-in language to programming the CONFIG.SYS
It supports also labels and subroutines (GOTO, GOSUB, RETURN),
console I/O (?,SWITCH,ECHO,CLS,CPOS), time delay (TIMEOUT),
calling another CONFIG.SYS-like organized file (CHAIN) etc.
You can also set environment variabiles which can be used
in AUTOEXEC.BAT to determine the TSR loading etc.

Unlike MS/PC-DOS, DR-DOS does not precompile CONFIG.SYS,
it executes it sucessfully step by step, even if INSTALL statement is
written before DEVICE statement.

REM EXAMPLE OF CONFIG.SYS:

SET TEMP=C:\TMP
TIMEOUT=3
? "Will you load the XMS driver? [Y/N], 3 sec waiting" GOSUB DRIVERS
COUNTRY=033,437,C:\DRDOS\COUNTRY.SYS
DOS=HIGH,UMB
GOTO EXITCONFIG

:DRIVERS
  TIMEOUT=0
  CLS
  CPOS=10,1
  ECHO=Select driver (press number key):
  CPOS=12,8
  ECHO=[1] HIMEM.SYS
  CPOS=13,8
  ECHO=[2] EMM386.EXE
  SWITCH=Load1,Load2
:Load1
  DEVICE=C:\DRDOS\HIMEM.SYS
  GOTO LoadDone
:Load2
  DEVICE=C:\DRDOS\EMM386.EXE NOEMS
:LoadDone
  HISHELL SIZE=2160=C:\COMMAND.COM C:\ /P /MH
 RETURN

:EXITCONFIG
-- 
Pavel V. Ozerski            | Inst. of Evolutionary Physiology & Biochemistry,
office +7 (812)552-6870(291)|           Russian Academy of Sciences,
FAX    +7 (812)552-3012     |  Thorez pr. 44, St.Petersburg, 194223, Russia
home   +7 (812)528-5576     |          E-mail:  pavel AT insect DOT ief DOT spb DOT su

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