Western Digital T13/2132-D - Manual (Page 75)

June 23, 2010 T13/2132-D Revision 3
Working Draft Enhanced Disk Drive - 4 (EDD-4) 63
8.24 Initiate Disk Emulation & Boot (FN 4Ch)
This function uses the CD Specification Packet to create an emulated disk drive. The emulated device shall
have the device number supplied in the CD Specification Packet and can be accessed using INT13h FNs 0-49h.
Once the emulation has been initiated, the system shall be rebooted using the emulated device. This capability
allows a CD to have a default selection program which may allow the user to choose from a variety of boot
images on the CD. Once the choice is made, the system can be rebooted using the new image.
Entry
AH 4Ch
AL 00h
DS:SI Pointer to CD Specification Packet (see table 27)
Exit
Carry Clear This condition shall not happen. If the function is successful this system shall reboot
causing the calling software to be terminated.
Carry Set Function completed with an error, emulation not initiated