INT 1A - PCMCIA Socket Services - READ ERROR DETECTION CODE
        AH = 9Ch
        AL = adapter number
        BH = EDC generator
Return: CF clear if successful
            AH destroyed
            DL/DX = computed checksum or CRC
        CF set on error
            AH = error code (01h,04h) (see AH=80h"PCMCIA")
SeeAlso: AH=95h,AH=96h,AH=98h,AH=99h,AH=9Bh

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