_ FCO FP785-M0C1, The benchmark EGYPT D produces incorrect answers ----------------------------------------------------------------------------| | _ _ _ _ _ _ _ | | | | | | | | | | Level of Page 1 | | |d|i|g|i|t|a|l| Urgency Of 13 | | |_|_|_|_|_|_|_| FCO [ M ] | |___________________________________________________________________________| | FIELD CHANGE ORDER Number: FP785-M0C1 | |___________________________________________________________________________| | Applicability: | | Retrofit all VAX FP785s to Option Revision Level "Cl".(See chart page 6 | | of this FCO). The minimum acceptable revision of modules in spares stock | | is as follows: | | M7540-Etch Rev "A" Part Rev "C1" | | M7541-Etch Rev "B" Part Rev "D1" | | M7542-ETCH REV "B" Part Rev "C1" | | M7544-Etch Rev "B"Part Rev "D1" "DD1" or "D2" | | | | This FCO incorporates ECOs: M7540-TW002, M7541-TW003, M7542-TW002, | | M7544-TW003 & M7544-TW003A. | |___________________________________________________________________________| | | | | || This FCO supersedes the original release of 20 March 1985 and provides| | || the following changes: On pages 2 and 10, the RX01 (EGYPTD) was | | || changed from AS-U112A-AE to AS-U112B-AE. On page 5 the Quick Check now| | || specifies Revision "B1". On page 6 in the Quick Check, the wire | | || attaches from E36 pin 1 to E26 pin 10 (instead of to PTH below and | | || to the right of E65 pin 7). On page 10, following the NOTE in step 27,| | | more diagnostic information has been provided. | |___________________________________________________________________________| | Problem/Symptoms: | | (SEE PAGE 2 FOR THE PROBLEM/SYMPTOMS AND CORRECTION.) | |___________________________________________________________________________| | Quick Check: | | M7540-Check location E8 for 74S194; M7541-Check location E2 for 74S194 | | M7542-Check location E3 for 74S194; M7544-Check no wire on pin 9 of E65. | |___________________________________________________________________________| | Compatibility/Prerequisite FCO: | Est. Time to Install | | None | 2 Hours | |___________________________________________________|_______________________| | Special Tools or Test Equipment: | | Field Service Tool Kit | |___________________________________________________________________________| | FCO Parts Information | |___________________________________________________________________________| | Order by | Contents | | FCO Kit # |____________________________________________________________| | | Quantity Part Number Description | | | | | EQ-01330-01 | See page 2 of this FCO for Part Numbers and Descriptions. | | EQ-01330-02 | | | FA-04611-01 | 1 FCO Document | | | | |______________|____________________________________________________________| | EQ Kit Variation/System-Option Applic: | |___________________________________________________________________________| | Approvals | |___________________________________________________________________________| | CSSE Engineer |F.S. Product Safety | F.S. Logistics | | John Stevens | John Freudenberg | Ed Duggan | |________________________|_________________________|________________________| | Responsible CSSE Mgr |F.S. Microfiche Libraries| Affected Population | | Jan Sicard | | 800 | |________________________| VAX |_______________________ | | ESD&P Micropublishing | | Initial Kitting | | Barbara Eriss | VAXnotes | 800 | |________________________| STARS |_______________________ | | Revision | | Hardcopy Publication | | B | | 1000 | |________________________| |________________________| | FCO Release Date | | Parts Availability | | 22 July 1985 | | | +---------------------------------------------------------------------------+ ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 2 OF 13 | ----------------------------------------+-------------------------------------- PROBLEM SYMPTOM: The benchmark EGYPT D produces incorrect answers. An interim solution was to cause double precision multiplication to be executed in the CPU instead of in the Floating Point option. CORRECTION: - Massive chip changes on the M7540, M7541 and M7542 modules. - The removal of the MULD disable on the M7544 module allows double precision multiplication to be executed in the floating point option (See instruction 22). PARTS LIST: EQ-01330-01 ----------- QUANTITY PART NUMBER DESCRIPTION -------- ----------- ----------- 1 M7540 FNM Module 1 M7541 FMH Module 1 M7542 FML Module 1 36-19209-04 Brady Marker "D" 1 36-19208-01 Brady Marker "1" 1 36-19208-02 Brady Marker "2" 3 ft. 91-07688-55 30 AWG Wire 1 AS-T791D-DE RX01 floppy (Micro 4) 1 AS-U112B-AE RX01 floppy (Egypt D) 1 FA-04611-01 FCO Document EQ-01330-02 ----------- 1 AS-U112B-AE RX01 (EGYPTD) 1 FA-04611-01 FCO Document ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 3 OF 13 | ----------------------------------------+-------------------------------------- INSTALLATION AND TEST PROCEDURE FOR FCO FP785-M-00C1 ---------------------------------------------------- ************************************************************************** * CAUTION * * * * The modules in this FCO, as with all other VAX 11/785 modules, contain * * electrostatic discharge sensitive devices (ESDS). The use of the * * VELOSTAT kit is essential to prevent damage which may not be noticed * * immediately. * * * ************************************************************************** 1. Shut down system by executing shutdown command procedure. 2. Set five-position keyswitch on controller panel to "OFF". Set the main circuit breaker on power controller at the back of the machine to "OFF". 3. Set all memory power supply switches to "OFF" position. ********************************************************* * WARNING * * * * If memory power supply switch is on and circuit * * breaker on power controller is set to OFF, battery * * backup unit (if installed as an option) will be * * turned on. To turn off battery backup unit, * * memory power supply must be turned off. * * * ********************************************************* Set up the VELOSTAT Kit: - Unfold the VELOSTAT mat to full size (24x24). - Attach the 15' ground cord to the VELOSTAT snap fastener on the mat. - Attach the alligator clip end of the ground cord to a good ground on the 11/785. - Attach the wrist strap to either wrist and the alligator clip to a convenient portion of the mat. 4. Remove the M7540 module from the CPU slot 24 and place it on the mat. 5. Inspect the removed M7540 module. If it is at Revision "C1" re-install it in slot 24 and proceed to step 10 (M7541 module). If the M7540 module is below revision "C1", go on to the next step (6) and return the removed M7540 module ASAP to the designated repair center for upgrade. ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 4 OF 13 | ----------------------------------------+-------------------------------------- 6. Place the box (EQ-01330-01) with the new M7540 on the VELOSTAT Mat. 7. Remove the module from the box and protective covering and lay it flat on the VELOSTAT mat. This will bring the module to the same potential as the CPU and eliminate static discharge damage. 8. Insure that the new M7540 module is at part revision "C1". 9. Install the new M7540 module in slot 24. 10. Remove the M7541 module from slot 25 using the same VELOSTAT mat procedure as described for the previous module. 11. Inspect the removed M7541 module. If it is at Revision "D1" re-install it in slot 25 and proceed to step 16 (M7542 module). If the M7541 module is below Revision "D1" go to the next step (12) and return the removed M7541 ASAP to the designated repair center for upgrade. 12. Place the box EQ-01330-01 with the new M7541 module on the VELOSTAT mat. 13. Remove the module from the box and protective covering and lay it flat on the VELOSTAT mat. This will bring the module to the same potential as the CPU and eliminate static discharge damage. 14. Insure that the new M7541 module is at part revision "D1". 15. Install the new M7541 module in slot 25. 16. Remove the M7542 module from slot 26 using the same VELOSTAT mat procedure as described for the previous modules. ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 5 OF 13 | ----------------------------------------+-------------------------------------- 17. Inspect the removed M7542 module. If it is at Revision "C1" re-install it in slot 26 and proceed to step 22 (M7544 module). If the M7542 module is below Revision "C1" go on to the next step (18) and return the removed M7542 module ASAP to the designated repair center for upgrade. 18. Place the box EQ-01330-01 with the new M7542 module on the VELOSTAT mat. 19. Remove the module from the box and protective covering and lay it flat on the VELOSTAT mat. This will bring the module to the same potential as the CPU and eliminate static discharge damage. 20. Insure that the new M7542 module is at part revision "C1". 21. Install the new M7542 module in slot 26. 22. Remove module M7544 Part Revision "B1" or "C1" from slot 28 and rework in accordance with the following instructions using the Velostat mat procedure as described in #7, 10 and 13. +-----------------------------------------------------------+ |REWORK INSTRUCTIONS FOR M7544 PART REVISION "B1". | |QUICKCHECK: No wire on pin 9 of E65. | +-----------------------------------------------------------+ A) Install a brady marker "D2" on the module handle. ************************************************************* * NOTE: * * Part Revision "B1" and "D2" are exactly the same. * ************************************************************* ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 6 OF 13 | ----------------------------------------+-------------------------------------- +--------------------------------------------------------------------+ |REWORK INSTRUCTIONS FOR M7544 PART REVISION "C1". | |QUICK CHECK FOR REVISION "C1": Wire from E36 pin 1 to E26 pin 10. | +--------------------------------------------------------------------+ A) WIRE DELETE SIDE 1 (See Figure 1) --------------------------------- 1 - Unsolder each end of the wire running from E7 pin 8 to second Plated Through Hole (PTH) below and to the right of E65 pin 7. 2 - Bend the unsoldered ends of the wire back to the first staking point; cut each end of the wire off adjacent to the staking point. B) WIRE ADD SIDE 1 (See Figure 1) ------------------------------ 3 - Add wire from E36 pin 1 to second PTH below and to the right of E65 pin 7. ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 7 OF 13 | ----------------------------------------+-------------------------------------- ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 8 OF 13 | ----------------------------------------+-------------------------------------- C) Install Brady Markers "D" and "1" on the module handle and another "D" Brady marker on the outer edge of the module (see figure 2) to indicate the new revision "DD1". 23. Install the reworked M7544 module (either Revision "DD1 or "D2") in slot 28. 24. Power up the system. 25. Run two passes of Micro 4, ETKAU Rev 2.0 at all clock speeds using floppy (P/N AS-T791D-DE) included in the EQ-01330-01 kit. ********************************************************************** * NOTE: ETKAU REV 2.1 will fail tests A and C when MULD is * * executing in the floating point (M7544 module is at Rev B1, D1, * * DD1 or D1). IMPORTANT: DESTROY FLOPPY P/N AS-T791C-DE SINCE IT * * CAN NO LONGER BE USED. * ********************************************************************** ********************************************************************** * NOTE: * * The ETKAU REV 2.0 will fail tests A, C and D when * * MULD is executing CPU (M7544 is at Rev "C1"). * ********************************************************************** ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 9 OF 13 | ----------------------------------------+-------------------------------------- ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 10 OF 13 | ----------------------------------------+-------------------------------------- 26. Run two passes of EVKAB and EVKAC at all three clock speeds. 27. Run five passes of ETKAC or EGYPTD at normal and fast clock. ************************************************************************ * NOTE: * * ETKAC and EGYPT D will fail at slow clock. Testing of the floating * * point indicates that the slow margin is around 138 nanoseconds. In * * the 11/785, fast clock is 130 nanoseconds, normal is 133 nanoseconds * * and slow is 148 nanoseconds. * ************************************************************************ To run ETKAC read the file ETKAC.DOC on the floppy AS-U112B-AE which describes how to run the diagnostic. With the Floppy in the drive type: >>>@ETKAC.DOC To run EGYPT D you must first copy the files you need from the floppy into the SYSMAINT account. Boot the system, login to the Field Service account and copy the following files: EGYPTD.EXE, EGYPTD.COM, GOOD.DAT and FLOPPY.HLP. If the system is running VMS 3.X, use the FLX. $MOUNT/FOREIGN CSA1: $MC FLX FLX>/RS/IM=CS1:EGYPTD.EXE/RT/IM FLX>/RS=CS1:EGYPTD.COM/RT FLX>/RS=CS1:GOOD.DAT/RT FLX>/RS=CS1:FLOPPY.HLP/RT FLX>CTRL Z $ If the system is running VMS 4.X, use EXCHANGE. $RUN EXCHANGE EXCHANGE>COPY CSA1:EGYPTD.COM,GOOD.DAT,FLOPPY.HLP * EXCHANGE>COPY CSA1:EGYPTD.EXE * EXCHANGE>EXIT $ Read FLOPPY.HLP for a description of EGYPTD and some tips on how to interpret failures. The COMmand file is set up to run 50 passes of EGYPTD and compare the results with GOOD.DAT. Before you run multiple passes of EGYPTD, you should probably run a single pass by modifying the COM file. If you have difficulty running EGYPTD, make sure that GOOD.DAT is formatted exactly like the output of EGYPTD. When you run EGYPTD, use the COM file since it is set up to use DIFFERENCES to check the results. $@EGYPTD ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 11 OF 13 | ----------------------------------------+-------------------------------------- 28. Update Site Management Guide to reflect this FCO. 29. Report FCO activity on LARS form in the "Module/fail area/FCO". (See attached example). 30 UPON COMPLETION OF THIS FCO, PLEASE NOTIFY YOUR REGIONAL FCO COORDINATOR THAT THIS INSTALLATION HAS BEEN COMPLETED. PLEASE PROVIDE THE COORDINATOR WITH THE CUSTOMER'S NAME, CPU SERIAL NUMBER AND DEC #, IF AVAILABLE. FP785 OPTION LEVEL REVISION CHART --------------------------------- (DATES BELOW REFLECT MANUFACTURING IMPLEMENTATION DATES) FCS (JUN, 1984) OCT, 1984 JAN, 1985 FP785 REV 00 B1 C1* ---------------------------------------------------------------- M7540 B1 B1 C1 M7541 B1,C1 B1,C1 D1 M7542 B1 B1 C1 M7543 A1 A1 A1 M7544 B1 C1 D1,DD1, D2 *Option revisions "C" and "C1" are identical. NOTE: This FCO brings the 785 Floating Point to Phase I. ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 12 OF 13 | ----------------------------------------+-------------------------------------- ***************** | FCO: FP785-M-00C1 * D I G I T A L * | ***************** | PAGE 13 OF 13 | ----------------------------------------+-------------------------------------- \^ FP785 \\FP785 \\STEVENS \\1985 \\JUL \\FCO_DOCS