INT 1A - PCMCIA Socket Services - GET ERROR DETECTION CODE
        AH = 96h
        AL = adapter number
        BH = EDC generator number
Return: CF clear if successful
            AH destroyed
            BL = socket number
            DH = EDC attributes (see below)
            DL = EDC type (see AH=95h) (only one bit set)
        CF set on error
            AH = error code (01h,04h) (see AH=80h"PCMCIA")
SeeAlso: AH=95h,AH=97h,AH=9Ch

Bitfields for EDC attributes:
 bit 0  unidirectional only
 bit 1  (if bit 0 set) clear=read, set=write
 bits 2-7 reserved (0)

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