Written by Pete Zaitcev. Please consult Sun documentation if possible.
Material here obtained from observation and experimentation.
I am not responsible for any damages to your computers arising
from use of this material. USE THIS INFORMATION ON YOUR OWN RISK!

Ultra-1 (all FABs):

J2003	1-2	Flash write protected
	2-3	Flash write enabled

Ultra-2 (all FABs):

J2003	1-2	Flash Write protected
	2-3	Flash Write enabled

!From: Casper.Dik@Holland.Sun.Com
!Subject: Re: ultra 2 works w/ 300MHz but not 200MHz?????
!
!The jumper is J2301; connect pins 1&2 for 1:3 mode (250/300MHz) and
!pins 2&3 for 1:2 and 1:4 mode (167/200 and 400Mhz respectively).
!
!Jumper 2301 is betwen Sbus and UPa connectors, near the
!left side of the board.
!
!Casper

MrCoffee - only one FAB exist 501-3141:
MrCoffee is a JavaStation which never made it. Basic design is SS-4.

J0206			JTAG header, perhaps JSCC compatible.
J0904	1-2 shortened	Enter POST - output ttya, input ttya
	1-2 open	Skip POST - output screen, input ttya
        3-4		Unused
        5-6		Unused
        7-8		Unused
J1101	1-2 open (dflt)	TPE squelch
	1-2 short	Reduced squelch threshold
J1102	1-2 open (dflt)	100 Ohm TPE termination
	    short	150 Ohm TPE termination
J1602			Manufacturing test of unknown sort
J1603	1-2		PROM select (unfortunately PROM socket is emply)
	2-3 (default)	Flash select
J1604	1-2		FPROM write disable
	2-3 (default)	FPROM write enable

J0904 block is a bit block of pullup resistors which a user may shorten.
They may be read from the keyboard controller with a command 0xDD.

Krups 501-4267:
Krups is the official JavaStation.

J1202	1-2	Use Flash
	2-3	Select optional diagnostic FLASH PROM in socket J1203
		(this does not sound quite right ...)
J1300	1-2	Software debug use
        3-4	Factory use - PROM switch??
        5-6	Unused
        7-8	Flash update recovery
J0500		JTAG

J1300 is readable from a GPIO port, either 0x78 or 0x79 on EBus.

Espresso:
This is a system which does not exist officially, just like MrCoffee.
As Krups overtook MrCoffee, some other design overtook Espresso.
At present information about Espresso is very scarce because it saw
even less deployment than MrCoffee. It is known that Espresso is very
similar to Krups.

J1500	1-2	OBP available on ttya
	3-4
	5-6
	7-8	Selects uppper part of Intel flash for update recovery.
J1402	1-2	Intel Flash - DEFAULT
	3-4	AMD UV ROM 27C040 in PLCC carrier
	5-6	ROMBO

PLCC ROM pinout is not compatible with Flash.

JE1:
From 805-1486:

J1602	Pushbutton reset.
J301	External LED - unconfirmed
J1601	JTAG - connected to CPU
J1803	Ethernet activity connector

P1601	Power connector.
	ATTENTION! The power connector is the same as a floppy drive uses,
	but voltage is different. If you connect your JE1 to a floppy
	connector, it will burn!

Tue Sep 22 12:22:50 PDT 1998
Mon Mar 29 16:23:06 PST 1999
Tue Sep  7 11:50:43 PDT 1999
Tue Nov  2 10:57:44 PST 1999
Thu Nov 16 14:17:00 PST 2000