[Many thanks to everyone who emailed me, khaw@parcplace.com,
cmeyer@bloch.stanford.edu, klfergason@amoco.com, curt@ecn.purdue.edu,
guy@auspex.com. Sorry if I missed anyone.]
Let me count the ways... 
Bootup messages.
*	A model 41 says on boot-up - SuperSPARC/SuperCache PAC Enabled.
        A model 30 will just say - SuperSPARC PAC enabled.
        (Presumably a model 20 will pattern like the model 30.)
*	cpu = SUNW,SPARCstation-10
        mod0 = TI,TMS390Z55 (mid = 8)    => model 41 or 20.
        mod0 = TI,TMS390Z50 (mid = 8)    => model 30.
>From these two messages, you can uniquely identify all three models 20, 30 and
41. 
With the cover off. Look at the processor card.
* 	One black "can"			=> model 30 or 20.
        Two black "cans"		=> model 41.
        (also model 52, but they don't exist yet.)
*	I guess that the TI part no is also marked somewhere on the can.
>From SunOS.
*	/usr/etc/devinfo -pv 		(SunOS 4.1.3)
*	/usr/sbin/prtconf -pv		(Sun0S 5.x)
Look at 'clock-frequency:' and compare value with the following:
        frequency	model
        ------------------------
        017d7840	20
        02255100	30
        02625a00	41
        02aea540	52 or 54
I hope this is reasonably comprehensive. Usenet is wonderful...
Sandiway
--- Dr. Sandiway Fong NEC Research Institute Inc. 4 Independence Way Princeton NJ 08540(609) 951-2733 (609) 951-2482 (FAX)
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