1.1 --- a/src/gdrom/ide.c	Tue Dec 27 08:42:57 2005 +0000
     1.2 +++ b/src/gdrom/ide.c	Tue Dec 27 12:41:33 2005 +0000
     1.3 @@ -1,5 +1,5 @@
     1.4  /**
     1.5 - * $Id: ide.c,v 1.6 2005-12-26 10:47:34 nkeynes Exp $
     1.6 + * $Id: ide.c,v 1.7 2005-12-27 12:41:33 nkeynes Exp $
     1.7   *
     1.8   * IDE interface implementation
     1.9   *
    1.10 @@ -126,6 +126,25 @@
    1.11  	break;
    1.12      case IDE_CMD_SET_FEATURE:
    1.13  	switch( idereg.feature ) {
    1.14 +	case IDE_FEAT_SET_TRANSFER_MODE:
    1.15 +	    switch( idereg.count & 0xF8 ) {
    1.16 +	    case IDE_XFER_PIO:
    1.17 +		INFO( "Set PIO default mode: %d", idereg.count&0x07 );
    1.18 +		break;
    1.19 +	    case IDE_XFER_PIO_FLOW:
    1.20 +		INFO( "Set PIO Flow-control mode: %d", idereg.count&0x07 );
    1.21 +		break;
    1.22 +	    case IDE_XFER_MULTI_DMA:
    1.23 +		INFO( "Set Multiword DMA mode: %d", idereg.count&0x07 );
    1.24 +		break;
    1.25 +	    case IDE_XFER_ULTRA_DMA:
    1.26 +		INFO( "Set Ultra DMA mode: %d", idereg.count&0x07 );
    1.27 +		break;
    1.28 +	    default:
    1.29 +		INFO( "Setting unknown transfer mode: %02X", idereg.count );
    1.30 +		break;
    1.31 +	    }
    1.32 +	    break;
    1.33  	default:
    1.34  	    WARN( "IDE: unimplemented feature: %02X", idereg.feature );
    1.35  	}

     2.1 --- a/src/gdrom/ide.h	Tue Dec 27 08:42:57 2005 +0000
     2.2 +++ b/src/gdrom/ide.h	Tue Dec 27 12:41:33 2005 +0000
     2.3 @@ -1,5 +1,5 @@
     2.4  /**
     2.5 - * $Id: ide.h,v 1.2 2005-12-25 08:24:11 nkeynes Exp $
     2.6 + * $Id: ide.h,v 1.3 2005-12-27 12:41:33 nkeynes Exp $
     2.7   *
     2.8   * This file defines the interface and structures of the dreamcast's IDE 
     2.9   * port. Note that the register definitions are in asic.h, as the registers
    2.10 @@ -63,6 +63,13 @@
    2.11  #define IDE_CMD_SERVICE 0xA2
    2.12  #define IDE_CMD_SET_FEATURE 0xEF
    2.13  
    2.14 +#define IDE_FEAT_SET_TRANSFER_MODE 0x03
    2.15 +
    2.16 +#define IDE_XFER_PIO        0x00
    2.17 +#define IDE_XFER_PIO_FLOW   0x08
    2.18 +#define IDE_XFER_MULTI_DMA  0x20
    2.19 +#define IDE_XFER_ULTRA_DMA  0x40
    2.20 +
    2.21  /* The disc register indicates the current contents of the drive. When open
    2.22   * contains 0x06.
    2.23   */