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Line 1: Packet drivers is a [[Application programming interface\|API]] created in [[1986]] for [[network card]]s under [[x86]]-[[Disk Operating System\|DOS]] like [[FreeDOS]], [[DR-DOS]], [[MS-DOS]], etc.. made by [[FTP Software]]. It ~~used~~uses the [[INT (x86 instruction)\|x86 interrupt number]] (INT) between 0x60 .. 0x80. The exact number is detected at run-time. But ~~usually~~ it's usually 0x60. An application scan through the handlers for vectors 0x60 through 0x80 until it finds one with the text string "PKT DRVR" in the 12 bytes immediately following the entry point. The driver can handle [[Ethernet]], [[Token ring]], [[RS-232]], [[ARCNET\|Arcnet]], [[X.25]]. <ref name="crynwr_com-packet_driver">{{cite web\|title=PC/TCP Packet Driver Specification\|url=http://www.crynwr.com/packet_driver.html}} 090430 crynwr.com</ref>

PC/TCP Packet Driver: Difference between revisions