1.1 --- a/src/asic.c	Thu Jun 15 10:32:42 2006 +0000
     1.2 +++ b/src/asic.c	Sun Jun 18 11:58:47 2006 +0000
     1.3 @@ -1,5 +1,5 @@
     1.4  /**
     1.5 - * $Id: asic.c,v 1.16 2006-06-15 10:32:38 nkeynes Exp $
     1.6 + * $Id: asic.c,v 1.17 2006-06-18 11:58:47 nkeynes Exp $
     1.7   *
     1.8   * Support for the miscellaneous ASIC functions (Primarily event multiplexing,
     1.9   * and DMA). 
    1.10 @@ -56,6 +56,7 @@
    1.11  #define G2_BIT0_OFF_TICKS 24
    1.12  
    1.13  struct asic_g2_state {
    1.14 +    unsigned int last_update_time;
    1.15      unsigned int bit5_off_timer;
    1.16      unsigned int bit4_on_timer;
    1.17      unsigned int bit4_off_timer;
    1.18 @@ -69,7 +70,6 @@
    1.19  {
    1.20      register_io_region( &mmio_region_ASIC );
    1.21      register_io_region( &mmio_region_EXTDMA );
    1.22 -    mmio_region_ASIC.trace_flag = 0; /* Because this is called so often */
    1.23      asic_reset();
    1.24  }
    1.25  
    1.26 @@ -95,6 +95,7 @@
    1.27  /* FIXME: Handle rollover */
    1.28  void asic_g2_write_word()
    1.29  {
    1.30 +    g2_state.last_update_time = sh4r.icount;
    1.31      g2_state.bit5_off_timer = sh4r.icount + G2_BIT5_TICKS;
    1.32      if( g2_state.bit4_off_timer < sh4r.icount )
    1.33  	g2_state.bit4_on_timer = sh4r.icount + G2_BIT5_TICKS;
    1.34 @@ -110,10 +111,24 @@
    1.35  
    1.36  static uint32_t g2_read_status()
    1.37  {
    1.38 +    if( sh4r.icount < g2_state.last_update_time ) {
    1.39 +	/* Rollover */
    1.40 +	if( g2_state.last_update_time < g2_state.bit5_off_timer )
    1.41 +	    g2_state.bit5_off_timer = 0;
    1.42 +	if( g2_state.last_update_time < g2_state.bit4_off_timer )
    1.43 +	    g2_state.bit4_off_timer = 0;
    1.44 +	if( g2_state.last_update_time < g2_state.bit4_on_timer )
    1.45 +	    g2_state.bit4_on_timer = 0;
    1.46 +	if( g2_state.last_update_time < g2_state.bit0_off_timer )
    1.47 +	    g2_state.bit0_off_timer = 0;
    1.48 +	if( g2_state.last_update_time < g2_state.bit0_on_timer )
    1.49 +	    g2_state.bit0_on_timer = 0;
    1.50 +    }
    1.51      uint32_t val = MMIO_READ( ASIC, G2STATUS );
    1.52      if( g2_state.bit5_off_timer <= sh4r.icount )
    1.53  	val = val & (~0x20);
    1.54 -    if( g2_state.bit4_off_timer <= sh4r.icount )
    1.55 +    if( g2_state.bit4_off_timer <= sh4r.icount ||
    1.56 +	(sh4r.icount + G2_BIT5_TICKS) < g2_state.bit4_off_timer )
    1.57  	val = val & (~0x10);
    1.58      else if( g2_state.bit4_on_timer <= sh4r.icount )
    1.59  	val = val | 0x10;
    1.60 @@ -225,8 +240,6 @@
    1.61  	break;
    1.62      default:
    1.63  	MMIO_WRITE( ASIC, reg, val );
    1.64 -	WARN( "Write to ASIC (%03X <= %08X) [%s: %s]",
    1.65 -	      reg, val, MMIO_REGID(ASIC,reg), MMIO_REGDESC(ASIC,reg) );
    1.66      }
    1.67  }
    1.68