Path: utzoo!utgpu!cunews!micor!latour!atronx!rwm
From: rwm@atronx.OCUnix.On.Ca (Russell McOrmond)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A3000 boot colours
Message-ID: <55724.661141543@atronx.OCUnix.On.Ca>
Date: Thu Dec 13 20:25:43 1990
Followup-To: comp.sys.amiga.hardware
In-Reply-To: DXB132@psuvm.psu.edu

In a message posted on 12 Dec 90 18:05:01 GMT,
DXB132@psuvm.psu.edu wrote:

D>>bad idea to rely on this anyways).  ASDG has a real easy command to the
D>>siosbx.device - Does Supra have something similar for their modem0.device? If

D>Could you describe how this command (in the ASDG driver) is implemented?

  If you do implement something similar, let me know , and I'll document it
with all my stuff.

Here's an exerpt from the code that I use - The ASDG stuff is basically right
out of their manual:


...

/* DTR.c -- handle DTR */
/****************************************/
/* Set com DTR line                     */
/* FALSE = DTR off; TRUE = dtr on       */
/****************************************/

void SetInternalDTR(ios,set)
IOSER *ios;
int set;
{
  struct CIA *Ciab;

  Ciab=(struct CIA *)0xBFD000;
  Disable();
  Ciab->ciaddra |= CIAF_COMDTR;            /* Set DTR as output */
  if (set) Ciab->ciapra &= ~CIAF_COMDTR;   /* Set DTR low */
  else Ciab->ciapra |=  CIAF_COMDTR;       /* Set DTR high */

  Enable();
}

/****************************************************/
/* ASDG Dual Serial Board (and presumably 4 board)  */
/*  DTR control support.                            */
/****************************************************/
#define SIOCMD_SETCTRLLINES 0x10
#define SIOB_RTSB  0
#define SIOB_DTRB  1
#define SIOB_RTSF  (1<<SIOB_RTSB)
#define SIOB_DTRF  (1<<SIOB_DTRB)

void SetAsdgDTR(ios,set)
IOSER *ios;
int set;
{
  ios->IOSer.io_Command=SIOCMD_SETCTRLLINES;
  ios->IOSer.io_Offset=SIOB_DTRF;
  if(set==TRUE) {
    ios->IOSer.io_Length=SIOB_DTRF;
  }
  else {
    ios->IOSer.io_Length=0;
  }
  DoIO(ios);
}

/*************************************************/


void
SerHangup()
{
  if(ASDG_DSB) {
    SetAsdgDTR(&Iosw,FALSE);
  }
  else {
    SetInternalDTR(&Iosw,FALSE);
  }

  Delay(30);
  
  if(ASDG_DSB) {
    SetAsdgDTR(&Iosw,TRUE);
  }
  else {
    SetInternalDTR(&Iosw,TRUE);
  }

  Delay(60);
}

---
  Opinions expressed in this message are my Own.  My Employer does not even
know what these networks ARE.

  Russell McOrmond   rwm@Atronx.OCUnix.On.Ca   {tigris,alzabo,...}!atronx!rwm 
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