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Int 14 Fn 0B - Mbbios - Read Buffer [S]
AH = 0Bh
CX = size of buffer
ES:DI -> buffer
Return: AH = composite line status (see AH=03h) formed by ORing all statuses
on receive interrupts; bit 0 set if additional characters
available
AL = composite modem status (see AH=03h) formed by ORing all statuses
CX = number of characters actually read
DI updated
Note: the PACCOM version of MBBIOS does not use CX or ES:DI on call,
instead returning ES set to the segment of the buffer containing a
received packet, or 0000h if no packets available; the buffer may
be freed with AH=0Ch"MBBIOS"
See Also: AH=02h,AH=08h"MBBIOS",AH=0Ah"MBBIOS",AH=0Ch"MBBIOS",AH=18h"FOSSIL"
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