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Copyright 1991 David Jurgens |
INT 21,3F - Read From File or Device Using Handle
AH = 3F
BX = file handle
CX = number of bytes to read
DS:DX = pointer to read buffer
on return:
AX = number of bytes read is CF not set
= error code if CF set (see DOS ERROR CODES)
- read specified number of bytes from file into buffer DS:DX
- when AX is not equal to CX then a partial read occurred due
to end of file
- if AX is zero, no data was read, and EOF occurred before read
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| Esc or Alt-X to exit |
int 21,3f |
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