cN2CRC Class Reference

#include <nagra2.h>

List of all members.

Public Member Functions
	cN2CRC (void)
void	AddCycles (unsigned int num)
unsigned char	Ctrl (void)
void	Ctrl (unsigned char c)
unsigned char	Data (void)
void	Data (unsigned char d)

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Detailed Description

Definition at line 217 of file nagra2.h.

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Constructor & Destructor Documentation

cN2CRC::cN2CRC

(

void

)

Definition at line 175 of file nagra2.c.

{
  cycles=0; CRCpos=0; CRCtime=0; CRCin=0;
  CRCvalue=0xffff; CRCit=CRCCALC_DELAY+1; ctrl=CRC_DISABLED;
  GenTable();
}

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Member Function Documentation

void cN2CRC::AddCycles

(

unsigned int

num

)

Definition at line 182 of file nagra2.c.

Referenced by cMapMemHW::AddCycles().

{
  cycles+=num;
}

unsigned char cN2CRC::Ctrl

(

void

)

Definition at line 212 of file nagra2.c.

Referenced by cMapMemHW::Get(), and cMapMemHW::Set().

{
  Update();
  unsigned char r=ctrl;
  if(CRCit<CRCCALC_DELAY) r|=CRC_BUSY; else r&=~CRC_BUSY;
  return r|0x80;
}

void cN2CRC::Ctrl

(

unsigned char

c

)

Definition at line 220 of file nagra2.c.

{
  if(ctrl&CRC_DISABLED) {
    if(!(c&CRC_DISABLED)) {
      CRCvalue=0xffff; CRCpos=0; CRCtime=cycles;
      if(CRCit<=CRCCALC_DELAY) { CRCtime++; CRCit++; }
      }
    }
  else if(c&CRC_DISABLED) Update();
  ctrl=c;
}

unsigned char cN2CRC::Data

(

void

)

Definition at line 232 of file nagra2.c.

Referenced by cMapMemHW::Get(), and cMapMemHW::Set().

{
  Update();
  return (CRCvalue^0xffff)>>((CRCpos++&1)<<3);
}

void cN2CRC::Data

(

unsigned char

d

)

Definition at line 238 of file nagra2.c.

{
  Update();
  if(CRCit>CRCCALC_DELAY && !(ctrl&CRC_DISABLED)) {
    CRCin=d;
    CRCit=0; CRCtime=cycles;
    }
}

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The documentation for this class was generated from the following files:

• sc/PLUGINS/src/sc-src/systems/nagra/nagra2.h
• sc/PLUGINS/src/sc-src/systems/nagra/nagra2.c