DOS/32 Advanced DOS Extender - Programmer's Reference


3.24 - DOS function 4405h - Write to Block Device Control Channel

 

In: AX = 4405h
EBX = drive number (00h = default, 01h = A:, etc)
ECX = number of bytes to write (size)
DS:EDX = pointer to buffer to write from (addr)
Out:

if successful:
CF clear
EAX = number of bytes written

if failed:
CF set
EAX = DOS error code

 


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