June 23, 2010

T13/2132-D Revision 3

8.22 Initiate Disk Emulation (FN 4Ah)

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.

Entry

AH 4Ah

AL 00h

DS:SI Pointer to CD Specification Packet (see table 27)

Exit

Carry Clear Function completed without error, emulation request was successful AH Shall be cleared to zero

Carry Set Function completed with an error, emulation not initiated AH Shall be set to the error code

Working Draft Enhanced Disk Drive - 4 (EDD-4)

59

Page 71
Image 71
Western Digital manual Initiate Disk Emulation FN 4Ah, June 23 T13/2132-D Revision