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G206 and G208

    Date: Wed, 20 Sep 89 08:44 PDT
    From: Chucko@VERMITHRAX.SCH.Symbolics.COM (Charles R. Fry)

	Date: Wed, 20 Sep 89 08:46 EDT
	From: Paul Pangaro <pan@Athena.Pangaro.Dialnet.Symbolics.Com>

	Can anyone explain that difference in flod files? Documentation says
	something about a machine using "either one" but not why, whether they
	are exclusive to a given machine, whether they can be swapped, etc.



    The two designations refer to two different FEP PROM sets for the G-machine
    (3610, '20, '30, '50, and '53) family.  The major differences is that G208
    supports ESDI disk drives, e.g. the Maxtor 4380 and 4760 (5 1/4 inch drives
    with 380 and 760 megabytes unformatted, respectively), thus machines with
    these disk drives can only use G208 PROMS.  There are no operational
    differences, so there is no need to update machines that have G206, unless you
    are retrofitting an ESDI drive to an older machine.
Not quite true; G208 supports autoboot, G206 does not.

    G206 flods will not work with G208 PROMs, nor will G208 flods work with G206

     -- Chuck Fry
	Symbolics Software Support