0:480h                   Keyboard Buffer Start Offset Pointer

Length: 2 bytes

This word contains the offset of the start of the keyboard buffer.
This allows you to move the buffer, increase its size, or decrease its
size. There is one catch, however: The address here is an offset
starting at address 0:400h. For example, the default 32-byte buffer at
0:41Eh forces this offset address to be 001Eh. Therefore, if the
buffer is to be moved to another location, the buffer starting offset
must be relative to 0:400h.

See also: 0:41Ah
See also: 0:41Ch
See also: 0:41Eh
See also: 0:482h

0:480h Keyboard Buffer Start Offset Pointer