Datasheet

Read Buffer
This command transfers the current contents of the first page of the data buffer (512 bytes) to the host.
Read Buffer Command Issued by Host
Task File Register 7 6 5 4 3 2 1 0
COMMAND E4h
DRIVE/HEAD nu nu nu D nu
CYLINDER HI nu
CYLINDER LOW nu
SECTOR START nu
SECTOR COUNT nu
FEATURES nu
Command Block specified upon completion/termination of Read Buffer command (E4h)
Task File Register 7 6 5 4 3 2 1 0
BSY DRDY DWF DSC DRQ CORR IDX ERR
STATUS 0 1 0 1 V V 0 0
DRIVE/HEAD na na na na na
CYLINDER HI na
CYLINDER LOW na
SECTOR na
SECTOR COUNT na
BBK UNC MC IDNF MCR ABRT TK0NF AMNF
ERROR 0 0 0 0 0 0 0 0