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From: ayac071@ut-ngp.UUCP
Newsgroups: comp.sys.ibm.pc,comp.lang.pascal
Subject: Re: HELP FOR TURBO BIOS CALLS NEEDED!!
Message-ID: <5872@ut-ngp.UUCP>
Date: Tue, 11-Aug-87 10:28:55 EDT
Article-I.D.: ut-ngp.5872
Posted: Tue Aug 11 10:28:55 1987
Date-Received: Thu, 13-Aug-87 01:19:50 EDT
References: <88@osupyr.UUCP>
Reply-To: ayac071@ngp.UUCP
Distribution: na
Organization: UTexas Computation Center, Austin, Texas
Lines: 28
Xref: utgpu comp.sys.ibm.pc:5785 comp.lang.pascal:220

In article <88@osupyr.UUCP> glazer@osupyr.UUCP (Jon Glazer) writes:
>This is IBM-PC related of course...

I assume your are running the IBM-PC specific version of Turbo Pascal, not
the more generic MS-DOS version.

>I am writing a program that I hope to be able to operate remotely.  The
>problem is that I would like to send output through the BIOS so that 
>when issuing the command CTTY COM1 (change console to com1) output goes
>to correct device.  DOS does this without any problem and so do programs such
>as EDLIN.  Could someone tell me how to write such a routine??

In the IBM version, Turbo Pascal sends its console i/o through the bios
interface.  It essentially bypasses DOS for nearly all activities, for the
sake of speed.  Unfortunately, bypassing DOS means bypassing the ability
to re-direct input and output, such as that done by the CTTY command.

If you have version 3.0 or higher, try using the compiler directives
		{$P1} {$G1}
at the start of your code.  This results in the compiler using the DOS
system calls, instead of the bios, for console input/output.  Then you
should be able to redirect you i/o through the modem.

If you are using the MS-DOS version of TP, you shouldn't have this problem,
as that version uses the DOS interface by default.

Bill Douglass
ayac071@ngp.UUCP