## wlb.013  ALS Software Note		Bill Brown
## 01/03/96 Huerikon Nitro60 to Motorola mvme167 roll-back proceedure
##		for crioc processors.

This morning we replaced crioc02 and '04 with Heurikon "Nitro-60" cpu boards.
A description of the proceedure to be used if it becomes necessary to roll
back to the original configuration follows.

Fig. 1 - Original VME Bin Configuration. (Front View)

	_____________________________________________________
	|   ||   ||   ||   ||   ||   ||   ||   ||   ||   |   \
	| M || B || B || B || M || B || M || B || M || B |   /
	| V || L || L || I || V || L || V || L || V || L |   \
	| M || A || A || T || M || A || M || A || M || A |   /
	| E || N || N || - || E || N || E || N || E || N |   \
	| 1 || K || K || 3 || 1 || K || 1 || k || 1 || K |   /
	| 6 ||   ||   ||   || 6 ||   || 6 ||   || 6 ||   |   \
	| 7 ||   ||   || I || 7 ||   || 7 ||   || 7 ||   |   /
	|   ||   ||   || N ||   ||   ||   ||   ||   ||   |   \
	| C ||   ||   || T || C ||   || C ||   || C ||   |   /
	| R ||   ||   || E || R ||   || R ||   || R ||   |   \
	| I ||   ||   || R || I ||   || I ||   || I ||   |   /
	| O ||   ||   || F || O ||   || O ||   || O ||   |   \
	| C ||   ||   || A || C ||   || C ||   || C ||   |   /
	| 0 ||   ||   || C || 0 ||   || 0 ||   || 0 ||   |   \
	| 1 ||   ||   || E || 2 ||   || 3 ||   || 4 ||   |   /
	|   ||   ||   ||   ||   ||   ||   ||   ||   ||   |   \
	|___||___||___||___||___||___||___||___||___||___|___/



Fig. 2 - Modified VME Bin Configuration. (Front View)

		      Heurikon RS-232 Cables
		      |			   |
		 ____________        ____________
		/ RS-232 to  \      / RS-232 to  \
	       /___CRIOC02____\    /___CRIOC04____\
	_____________________________________________________
	|   ||   ||   ||   ||   ||   ||   ||   ||   ||   |   \
	| M || B || B || B || B || N || M || B || B || N |   /
	| V || L || L || I || L || I || V || L || L || I |   \
	| M || A || A || T || A || T || M || A || A || T |   /
	| E || N || N || - || N || R || E || N || N || R |   \
	| 1 || K || K || 3 || K || O || 1 || K || K || O |   /
	| 6 ||   ||   ||   ||   || - || 6 ||   ||   || - |   \
	| 7 ||   ||   || I ||   || 6 || 7 ||   ||   || 6 |   /
	|   ||   ||   || N ||   || 0 ||   ||   ||   || 0 |   \
	|   ||   ||   || N ||   ||   ||   ||   ||   ||   |   /
	|   ||   ||   || T ||   ||   ||   ||   ||   ||   |   \
	| C ||   ||   || E ||   || C || C ||   ||   || C |   /
	| R ||   ||   || R ||   || R || R ||   ||   || R |   \
	| I ||   ||   || F ||   || I || I ||   ||   || I |   /
	| O ||   ||   || A ||   || O || O ||   ||   || O |   \
	| C ||   ||   || C ||   || C || C ||   ||   || C |   /
	| 0 ||   ||   || E ||   || 0 || 0 ||   ||   || 0 |   \
	| 1 ||   ||   ||   ||   || 2 || 3 ||   ||   || 4 |   /
	|___||___||___||___||___||___||___||___||___||___|___\

Inspection of Fig.1 and Fig.2 should make the following steps clear.

1)  Turn VME power OFF

2)  Remove the BLANK card which is to the _LEFT_ of the Nitro-60 processor
    that is to be replaced.

3)  Get the corresponding mvme-167 processor (ie CRIOC02 or CRIOC04) from
    the bookshelf against the east wall of the cmm room.

4)  Insert the mvme167 into the slot vacated in step 2).

5)  Remove the ribbon cable from the front of NITRO-60 board in slot to
    the _RIGHT_ of the '167 which was inserted in step 4).  Remove the
    NITRO 60 board from the vme bin.

6)  Insert the BLANK card into the slot vacated in step 5).

7)  Go to the rear of the rack cabinet.

Fig. 3 - Rear view of VME bin

		 ____________        ____________
		/ RS-232 to  \      / RS-232 to  \
	       /___CRIOC04____\    /___CRIOC02____\
			^		^
			|		|
			|		|
		     Heurikon RS232 Cables

		~~~~~~_____________________________________ _
			 |      ||      |   |      ||      | |
			 | MVME || MVME |   | MVME || MVME | |
			 | -712 || -712 |   | -712 || -712 | |
			 |      ||      |   |      ||      | |
			 |  C   ||  C   |   |  C   ||  C   | |
			 |  R   ||  R   |   |  R   ||  R   | |
			 |  I   ||  I   |   |  I   ||  I   | |
			 |  O   ||  O   |   |  O   ||  O   | |
	This area	 |  C   ||  C   |   |  C   ||  C   | |
	  Unused	 |  0   ||  0   |   |  0   ||  0   | |
			 |  4   ||  3   |   |  2   ||  1   | |
			 |      ||      |   |      ||      | |
			 |      ||      |   |      ||      | |
			 |      ||      |   |      ||      | |
			 |      ||      |   |      ||      | |
		      R  |      ||      | R |      ||      | |
		      I  |      ||      | I |      ||      | |
		      B  |      ||      | B |      ||      | |
		      B  |      ||      | B |      ||      | |
		      O  |      ||      | O |      ||      | |
		      N  |      ||      | N |      ||      | |
		      \  |______||______|_*_|______||______|_|
		~~~~~~~\~                 \
			\                  \
			 \                  \      _______________
			  \                  -----/ Ethernet conn. \
			   \                     /____to_CRIOC02____\
			    \	    ________________
			     \-----/ Ethernet conn. \
				  /____to_CRIOC04____\
					    ^		   ^
					    |		   |
					    |		   |
				       Heurikon Ethernet Cables


8)  Note that there are two pairs of ribbon cables which are routed to
    the front of the vme bin; these are the RS-232 connections to the
    NITRO-60 cpu boards.  There are also two sets of ribbon cables (which
    consist of a narrow ribbon cable which terminates in an Ethernet
    connector and a wide ribbon cable which is unused) that are connected
    to the VME P-2 Connectors of the slots which were occupied by the
    NITRO-60 boards..

9)  Remove the Ethernet interface from the ribbon cable and plug it into
    the mvme712 transition panel which coresponds to the cpu which was
    replaced.

10) Do the same for the RS-232 cable for the applicable cpu.  Be sure to
    connect the cable to the connector which is marked "Console." 

11) Go to the front of the rack cabinet and turn on the VME power.
    The processors will take from 3 to 5 minutes to boot.  When they are
    running normally, all of the mv167 boards should be flashing their
    front panel indicators in similar patterns.