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Path: utzoo!watmath!sunybcs!tim
From: tim@sunybcs.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Need help with Hayes 1200B software reset.
Message-ID: <1942@sunybcs.UUCP>
Date: Thu, 15-Jan-87 16:53:59 EST
Article-I.D.: sunybcs.1942
Posted: Thu Jan 15 16:53:59 1987
Date-Received: Fri, 16-Jan-87 07:28:35 EST
References: <2541@ecsvax.UUCP> <1047@sphinx.UChicago.UUCP>
Reply-To: tim@gort.UUCP (Timothy Thomas)
Distribution: na
Organization: SUNY/Buffalo Computer Science
Lines: 67

>I have also tried this 17 different ways with no success.  If
>anyone knows how, please post it.

Ok, since you asked.  Here is a small program a friend of mine wrote
to do this because we both had problems with our modems not paying
attention all the time.  Thanks goes to markj at the same address
as mine.
If somebody doesnt have a C compiler, and can not translate it into
another language, let me know and I will send you a uuencoded version
of sethayes.exe
Program follows my signature.

--------
____________   ____/--\____ 
\______  ___) (   _    ____)     "Damn it Jim!,
     __\ \____/  / `--'            I'm a programmer not a Doctor!"   
     )           `|=(-
     \------------'
   Timothy D. Thomas                 SUNY/Buffalo Computer Science
   UUCP:  [decvax,dual,rocksanne,watmath,rocksvax]!sunybcs!tim
   CSnet: tim@buffalo,   ARPAnet: tim%buffalo@CSNET-RELAY  

------cut here-------cut here------cut here-------cut here----------
/***
 ***  sethayes.c -  Mark D. Johnson         July 1, 1985  V1.0
 ***
 ***  A short program to force my Hayes 1200b to pay attention
 ***  to communication programs other than Smartcom II.  Performs
 ***  a software reset directly on the UART registers.  Modem must
 ***  be COM1 for the reset to work.
 ***
 ***  Special thanks to TDT for his assistance in research.
 ***/

showregs() /* print UART register values */
{
int x1,x2,x3,x4,x5,x6,x7;              /* register holders */

     x1 = inp(0x3f8);
     x2 = inp(0x3f9);
     x3 = inp(0x3fa);
     x4 = inp(0x3fb);
     x5 = inp(0x3fc);
     x6 = inp(0x3fd);
     x7 = inp(0x3fe);

     printf("%d %d %d %d %d %d %d\n",x1,x2,x3,x4,x5,x6,x7);
}


main ()   /* perform software reset on COM1 port */
{
     int i;                            /* do nothing variable */

     printf("before reset: \n");
     showregs();                       /* show values before */

     outp(0x3fc,4);                    /* set reset bit */

     for (i = 0; i < 32000; i++);      /* waste time - necessary for reset */

     outp(0x3fc,3);                    /* init values needed */

     printf("\nfinal setting:\n");
     showregs();                       /* show values after */

}