The fifth call implemented by the Videodisc Filing System is OSWORD &64. This does not have a direct equivalent in ADFS. Curiously though, it does have a direct equivalent in VFS's own OSWORD &62. Calling OSWORD &64 is identical to calling OSWORD &62 with SCSI function code &C8. The only difference is that the amount of code required to make the call is considerably shorter when using OSWORD &64.

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