PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 296

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

/***************************************************************************/
/*
/*
/*
/*
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EXPORT void
Int_ICC (pt)
{
Semiconductor Group
/* ***
/************************************************************************/
register PEITAB
WORD
BYTE
register BYTE
if (!(ista = inp (pt->pt_r_ista)))
exir = inp (pt->pt_r_exir);
if ((ista & ISTA_XPR) && !(ista & ISTA_TIN) && !(exir & EXIR_PCE))
{
Function: Int_ICC ()
Parms
purpose : handle ICC (ISAC-S, ISAC-P) interrupts
return;
if ((cnt = pt->pt_tx_cnt) == 0)
{
if (pt->pt_state & PT_HDLC_RESET)
else
{
The interrupt service routines
pt->pt_state &= ~PT_HDLC_RESET;
:’pt’
Int_ICC is called from IntServ_BASIC in basic_l2.c which
is SIPB system specific.
cnt;
exir, cmd;
ista;
*pt;
pointer to the corresponding PEITAB-table element
/* XPR interrupt
/* =============
/* the XPR interrupt indicates
/* that the XFIFO is ready for new
/* data bytes.
/* Reasons:
/* - HDLC controller reset
/*
/* - data transmission finished
/* transmit byte count is 0
/* ------------------------
/* HDLC controller reset command
/* given previously ?
/* -----------------------------
/* do nothing when it was a HDLC
/* controller reset only the
/* indicating flag must be cleared
/* XPR was generated because the
/* last transmission is finished
/* ------------------------------
/* AUTOMODE operation ?
296
***
Low Level Controller
(CMDR:XRES)
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