DOS/32 Advanced DOS Extender - Programmer's Reference


3.23 - DOS function 4404h - Read From Block Device Control Channel

 

In: AX = 4404h
EBX = drive number (00h = default, 01h = A:, etc.)
ECX = number of bytes to read (size)
DS:EDX = pointer to buffer to read to (addr)
Out:

if successful:
CF clear
EAX = number of bytes read

if failed:
CF set
EAX = DOS error code

 


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