NEX-MCA Manual
Contents
1. Loading It must be noted that the NEX MCA Bus Adapter does not provide any buffering of the MCA backplane signals This was a conscious design decision that was made by balancing the tradeoffs of possible backplane loading versus signal acquisition accuracy By not introducing signal buffers it is possible using the NEX MCA adapter to see the exact timing relationships and signal waveforms from the backplane It is believed that the signal loading of the TLA700 or 92A96 acquisition cards is low enough so that MCA signal degradation will not occur The NEX MCA Adapter Board was designed so that the run lengths for critical signals and those with the highest activity levels such as the address data bus are as short as possible This should help greatly in retaining signal integrity B 2 Patch Areas If signal loading or reflection does become a concern the capability exists to add series resistors to any MCA signal Patch areas have been provided next to each TLA700 A96 connector consisting of two rows of plated through holes These areas outlined on the silk screen and labeled as Nxx are suitable for individual resistors or resistor networks To add a series resistor simply cut the trace of the desired signal on the component side of the board and solder the resistor between the two feed throughs MCA MN XXX 11 Doc Rev 1 10 APPENDIX C Modifying the NEX MCA Adapter As previously mentioned the Micro Channel specification has t2. M IO CHRDYRTN 12V CD SFDBK CD CHRDY GND DO D1 D2 D3 5V D4 D5 GND D6 CHRESET D7 SDSTROBE GND SDRO DS16RTN GND REFRESH Key key MCA MN XXX l Doc Rev 1 10 QD Row B Solder Side Row A Component Side key 5V D10 Dil D13 12V DPARI SBHE CD DS16 5V IRQ14 IRQ15 Row B Solder Side Row A Component Side Reserved Reserved Reserved Reserved SDRI1 GND MSDR Reserved GND Reserved D16 SFDBKRTN D17 12V D18 D19 GND D20 D22 D21 D23 5V DPAR2 D24 GND D25 D27 D26 D28 5V D29 D30 GND D31 BEO DPAR3 BEl 12V BE2 BE3 GND DS32RTN TR32 CD DS32 A24 5V A25 A26 GND A27 A29 A28 A30 5V A31 APAREN GND APARO APAR2 APARI APAR3 GND MCA MN XXX 14 Doc Rev 1 10 APPENDIX E References Tektronix TLA700 System User s Manual Tektronix TLA700 Logic Analyzer User s Manual Tektronix DAS9200 TLA500 System User s Manual Tektronix 92A96 92C96 Module User s Manual The IBM PS 2 Hardware Interface Technical Reference published by IBM P N S68X 2330 00 November 1989 The Micro Channel Architecture Handbook by Chet Heath and Winn L Rosch published by Brady ISBN 0 13 583493 7 MCA MN XXX 15 Doc Rev 1 10 A PPENDIX F Support About Nexus Technology Inc NEXUS TECHNOLOGY Established in 1991 Nexus Technology Inc is dedicated to developing marketing and supporting Bus Analysis applications for Tektronix Logic Analyzers We can be reached at Nexus Techn
3. to properly connect the clock input and its ground Table 1 shows the wiring and Channel Grouping for the 92A96 MCA MN XXX 6 Doc Rev 1 10 Address Hex BusSize Hex Clocks Signal Name TC MSDR SDR1 SDRO REFRESH DSDSTRB M IO S1 S0 TR32 DS32RTN DS16RTN BE3 BE2 BE1 BEO CMD MSDR MCA MN XXX MCA Pin A30 B62 B61 B44 A45 A34 A33 A32 B80 A79 A44 A78 B78 B77 B76 B34 B62 TLA700 92A96 input Group Name Clocks Signal Name IRQn SFDBKRT CHCK RST SDCK MADE24 SBHE CHRDYRTN ADL CMD BURST PREEMPT ARB GNT ARB3 ARB2 ARBI ARBO Table 1 NEX MCA TLA700 92A96 Wiring Derived signal MCA Pin TLA700 92A96 input Doc Rev 1 10 5 0 CLOCK SELECTION 5 1 General Information All Micro Channel data is acquired using either both edges of CMD for standard cycles or a combination of CMD and the synthesized SDCLK for Streaming Data cycles The circuitry on the NEX MCA Bus Adapter is used to provide the necessary clock edges at the necessary times for properly acquiring Streaming Data cycles 6 0 VIEWING DATA 6 1 Viewing State Data on the TLA700 After making an initial acquisition the TLA700 will display the data in the Listing State format Address and Data information are displayed as hexadecimal values Bus Operation data is displayed using symbols Miscellaneous Bus Size and the Arbitration signal groups are all disp
4. NEXUS TECHNOLOGY NEX MCA Users Manual Including these Software Support packages MCA Copyright O 2008 Nexus Technology Inc All rights reserved Contents of this publication may not be reproduced in any form without the written permission of Nexus Technology Inc Brand and product names used throughout this manual are the trademarks of their respective holders MCA MN XXX 1 Doc Rev 1 10 Warranty Terms and License Agreement For warranty terms refer to the Terms and Conditions of Sale document that was included in the product shipment The Software License Agreement is displayed during installation A hardcopy of that agreement may be obtained from Nexus Technology All Nexus Technology products to which this manual refers are subject to the Terms and Conditions of Sale document and the Software License Agreement as appropriate Compliance with WEEE and RoHS Directives This product is subject to European Union regulations on Waste Electrical and Electronics Equipment Return to Nexus Technology for recycle at end of life Costs associated with the return to Nexus Technology are the responsibility of the sender MCA MN XXX N Doc Rev 1 10 TABLE OF CONTENTS LO OVERVIEW sele 4 DI General Information sva nvassslkrkeridsde kort nanemame ales are A S ST 4 20 SOFTWARE INSTALLATION SSS 4 X1 ENO EE EEE NE EE E NN NE Oke s 4 GDS PAST ae Ne 5 3 0 CONFIGURING the NEX MCA BUS ADAPTER rrrororroonnrrrrrerennrnrrrsnn
5. XX 8 Doc Rev 1 10 Pattern TLA700 92A96 Symbol XXOXXXX Refresh Ox 1 xxxx Reserved 101x101 StrmngDataMemRead 101x110 StrmngDataMemWrite Il 1xx11 Inactive 111x101 Memory Read 111x110 Memory Write 111xx00 Reserved 111x001 I O Read 111x010 I O Write Table 2 MCA BusOp Symbol Table Signals from left to right TC MSDR SDR1 SDRO REFRESH DSDSTRB M IO S1 SO 6 3 Viewing State Data on the DAS9200 TLA500 After an acquisition is made the DAS9200 Logic Analyzer will display the data in State Display mode as a default only Address and Data information are displayed as hexadecimal values Bus Operation data is displayed using symbols Miscellaneous Bus Size and the Arbitration signal groups are all displayed in hexadecimal radix The use of Symbol Tables when displaying state data enables the user to quickly determine what type of bus cycle was acquired One symbol table Table 2 has been provided to show the type of transaction that occurred on the MCA bus and its filename is MCA BUS This symbol table quickly shows whether the acquisition was of a memory or I O operation whether it was a read or a write etc It is important to note that changing the group channel or wiring of the Bus Operation group can result in incorrect symbol information being displayed 6 4 Viewing Timing Data on the DAS9200 TLA500 It may be useful to display acquired information using the Timing Diagram display of the DAS9200 Not
6. e 1 NEX MCA TLA700 92A96 Wiring rererrronrvennvnrnrnrrrrernrvennenenrnsenenerresensesnnesensneeresenseennee 7 Table 2 MCA BusOp Symbol Tabled outed eee eee a 9 Doc Rev 1 10 Ww MCA MN XXX 1 0 OVERVIEW 1 1 General Information The NEX MCA adapter has been designed to provide quick and easy connections to interface a 102 or 136 channel TLA700 a 92A96 or a 92C96 acquisition module to a MCA backplane The MCA designation refers to the Micro Channel Architecture specification In addition the method of connection permits the use of other measurement devices such as oscilloscopes The included software will permit the acquisition of MCA bus cycles and will display the data in easy to read symbolic form rather than raw hexadecimal or binary data Please note that this manual uses some terms generically For example references to a 92A96 acquisition card apply to a 92C96 acquisition card references to the DAS9200 apply equally to the TLA500 and references to the TLA700 apply to a TLA704 714 or TLA711 720 chassis with one or more 7L3 4 or 7M3 4 acquisition cards This manual assumes that the user is familiar with the MCA backplane specification and the Tektronix TLA700 DAS9200 or TLA500 Logic Analyzer Also in the case of the TLA700 it is expected that the user is familiar with Windows 95 98 For information on using a Prism 32GPX GPD module with this support or if 514 DAS floppies are needed please contact Nexus Techno
7. e that unlike some other logic analyzers with the DAS9200 there is no need to re acquire MCA data when changing from one display mode to another The same data can be viewed in either format This method of data display can be particularly useful when an asynchronous acquisition has been made using the DAS9200 internal acquisition clock to determine the relationships between signal edges Refer to the appropriate Tektronix DAS 92A96 Module User s Manual for more detailed information on formatting the display of the acquired data MCA MN XXX 9 Doc Rev 1 10 APPENDIX A Necessary Signals for Clocking To properly acquire Micro Channel backplane activity the following signals must be provided CMD MSDR CHRDYRTN SDR1 SDRO and SDSTROBE However SDSTROBE is only necessary when Streaming Data cycles are to be monitored For all but Streaming Data cycles Address information is acquired on the falling edge of CMD and the Data bus is acquired on the rising edge of CMD The other signals MSDR CHRDYRTN SDR1 and SDRO are used as clocking qualifiers or as cycle type determinants In order to properly acquire Streaming Data bus cycles some circuitry had to be added to the NEX MCA adapter This circuitry generates the SDCLK and DSDSTRB signals used by the logic analyzer card to properly acquire these cycles These signals DO NOT exist on the MCA backplane MCA MN XXX 10 Doc Rev 1 10 APPENDIX B Considerations B 1 MCA
8. ecification exceeds the channel count of a 92A96 or 102 channel TLA Because of this three jumper blocks have been defined JP2 JP3 and JP4 By placing a shorting jumper across the pair of pins next to the desired signal name that signal can then be monitored during the acquisition For information on physically modifying the NEX MCA adapter to monitor signals not provided with the standard implementation refer to Appendix C JP2 is used to select between SDSTRB and the derived signal DSDSTRB For proper clocking of Streaming Data activity the jumper should be set for DSDSTRB connecting pins 2 and 3 the leftmost two pins For high speed timing purposes it may be desired to view the actual SDSTRB signal In these cases the jumper should be placed between pins 1 and 2 the rightmost two pins JP3 selects between CHRESET and SDCLK To monitor CHRESET the jumper should connect pins 1 and 2 the rightmost two Placing the jumper between pins 2 and 3 the leftmost pair will permit monitoring the SDCLK signal JP4 is used to select which IRQ line should be monitored Using the jumper short the two pins adjacent to the desired IRQ signal MCA MN XXX 5 Doc Rev 1 10 4 0 CONNECTING to the NEX MCA ADAPTER 4 1 General Although taller than a standard Micro Channel module the NEX MCA adapter is designed to plug directly into any Micro Channel backplane slot The board length and connector spacing conforms to Micro Channel specificatio
9. layed in hexadecimal radix The use of Symbol Tables when displaying state data enables the user to quickly determine what type of bus cycle was acquired One symbol table Table 2 has been provided to show the type of transaction that occurred on the MCA bus and its filename is MCA_BUS TSF This symbol table quickly shows whether the acquisition was of a memory or I O operation whether it was a read or a write etc It is important to note that changing the group channel or wiring of the Bus Operation group can result in incorrect symbol information being displayed 6 2 Viewing Timing Data on the TLA700 By default the TLA700 will display an acquisition in the Listing State mode However the same data can be displayed in Timing form by adding a Waveform Display window This is done by clicking on the Window pull down selecting New Data Window clicking on Waveform Window Type then choosing the Data Source Two choices are presented MCA and MCA MagniVu The first MCA will show the exact same data same acquisition mode as that shown in the Listing window except in Timing format The second selection MCA MagniVu will show all of the channels in 2GHz MagniVu mode so that edge relationships can be examined at the module s trigger point With either selection all channels can be viewed by scrolling down the window Refer to the TLA700 System User s Manual for additional information on formatting the Waveform display MCA MN X
10. logy See Appendix E for contact information 2 0 SOFTWARE INSTALLATION Two 342 diskettes have been included with the NEX MCA Bus Adapter One is for use with the TLA700 series the other is to be used with a DAS9200 or TLA500 2 1 TLA700 The MCA support software is loaded in the same method as other Win95 98 programs Place the NEX MCA Install disk in the floppy drive of the TLA700 Select Control Panel and run Add Remove Programs choose Install Next then Finish Add Remove will then run SETUP EXE on the floppy and install the support in its proper place on the hard disk To load a support into the TLA 700 first select the desired Logic Analyzer card in the Setup screen select Load Support Package from the File pull down then choose MCA and click on Okay Note that for either support the Logic Analyzer card must be at least 102 channels in width MCA MN XXX 4 Doc Rev 1 10 2 2 DAS9200 The included diskette should be loaded onto the DAS9200 using the Install Application function This function is available from the Disk Services menu of the DAS For more information refer to the Tektronix DAS9200 or TLA500 System User s Manual Load the desired support from within the 92A96 Config menu by choosing MCA Support and pressing lt RETURN gt The channel grouping clocking and symbols will then be loaded 3 0 CONFIGURING the NEX MCA BUS ADAPTER 3 1 General Information The number of signals defined by the Micro Channel sp
11. ns 4 2 TLA700 When using NEX MCA support with a TLA700 containing a 7L3 4 or 7M3 4 acquisition module the necessary acquisition data sections are AO A3 D0 D3 and CO C3 These grouped channels 8 podlets to a group should be connected to the locations denoted for the A96 Follow the silk screened information on the board that shows the proper relationship between the signal and reference inputs When properly connected the sides of the podlets that have writing on them should be visible Connect the four clock leads to their specified locations at J12 the only connector with 4 locations Again follow the silk screened information to properly connect the clock input and its ground Table 1 shows the wiring and Channel Grouping for the TLA700 when used with the NEX MCA adapter 43 92A96 When using a 92A96 connect the grouped pods 8 podlets to a group to their appropriate locations by following the silkscreen information printed on the adapter board The 92A96 pods are labeled AO A3 DO D3 and C0 C3 Each pod has its proper location denoted on the silkscreen of the adapter board When attaching the pods follow the silkscreen information on the board showing the ground and signal pin locations When properly connected the colored sides of the podlets should be visible Connect the four clock leads one per A96 cable to their specified locations at J16 the only connector with 4 locations Again follow the silkscreened information
12. ology Inc 78 Northeastern Blvd 2 Nashua NH 03062 TEL 877 595 8116 FAX 877 595 8118 Web site http www nexustechnology com Support Contact Information Technical Support techsupport O nexustechnology com General Information support Cnexustechnology com Quote Requests quotes nexustechnology com We will try to respond within one business day If Problems Are Found Document the problem and e mail the information to us If at all possible please forward a Saved System Setup with acquired data that shows the problem Do not send a text listing alone as that does not contain enough data for analysis To prevent corruption during the mailing process it is strongly suggested that the Setup be zipped before transmission MCA MN XXX 16 Doc Rev 1 10
13. oo many signals to be able to acquire them all with just one 92A96 or 102 channel TLA acquisition card Assumptions have been made as to what signals are of interest but these assumptions may not be appropriate for every instance For these occasions the NEX MCA adapter may be easily modified to monitor any desired signals All MCA signals have been brought out to feed throughs on the board and there are three unused TLA A96 connectors on the board J4 J8 and J20 These connectors each have a series of holes beneath them towards the edge connector to provide easy solder points Use wire wrap wire to connect the Micro Channel signals to these connectors When changing the signals connected to an A96 pod the channel grouping default in the TLA700 DAS 9200 will have to be changed appropriately Refer to the TLA70 or DAS 9200 manuals for information on this procedure Also note that if any of the signals to the MCA BusOp group are changed then the included Symbol Table will no longer be accurate MCA MN XXX 12 Doc Rev 1 10 APPENDIX D MCA Bus Pinout Row B Solder Side Row A Component Side AUDIO GND CD SETUP AUDIO MADE24 GND GND 14 3MHz OSC All GND A10 A23 A9 A22 5V A21 A8 GND AT A20 A6 A19 5V A18 A5 GND A4 A17 A3 A16 5V A15 A2 GND Al A14 AO A13 12V A12 ADL GND PREEMPT IRQ9 BURST IRQ3 12V IRQ4 ARBO GND ARBI IRQ5 ARB2 IRQ6 12V IRQ7 ARB3 GND ARB GNT DPAREN TC DPARO 5V CHCK S0 GND S1 CMD
14. rnrrrrnnrnrnernennrnernennnn 5 31 G n r l Information srann enin a a a baka dkgavsdsndvsin te 5 4 0 CONNECTING to the NEX MCA ADAPTER rorvroronnrnrrrennnnrnrenennrnrrnennrnrenennnnrnssnnnnrnsnnnnnnn 6 4 Generaludrkstuatdea sta steke stage lete ee een non Eee 6 2 6 45 Nesten 6 50 BOCK SELECTION 2 8 S 1 General formation saga een e ere seerne kuta hennes 8 6 0 VIEWNGDATA ts 8 6 1 Viewing State Data on the TLA 700 Lygnesminagsidrensinestsisessmitdeisiatrsstetesestsrrinssedte 8 6 2 Viewing Timing Data on the TLATOO gacd veces sucsdiessdeesscasuesteacs sve cacetev deeay anes kaneneedendraeeandaa 8 6 3 Viewing State Data on the DAS9200 TLAS500 00 0 ceeneeceseeeceeeeeceeeeeceeeeeceeeeecteeeenaeees 9 6 4 Viewing Timing Data on the DAS9200 TLASO0 eee ceesceceeneeceseeecseeeeceeeeecseeecneeeenaeers 9 APPENDIX A Necessary Signals for Clocking 200 0 eeecceesseceencecesneeceeneeceeneeceeceeceseeecneeeeeneeeees 10 APPENDIX B Comnsiderations ccccccccccccesesssnsecececececeesenseaecececeesenessseceeeseeseeesessaaeeeeeeeeseneeas 11 BL MESTER RR 11 B2 Pateh Are ase basis ner em auke Tv 11 APPENDIX C Modifying the NEX MCA Adapter eenvnnenrnnonrrrnvvrnnnnenrnrenrnsnvnnnnnnenrasevsrsnvnnsnsser 12 APPENDIX DMCA Bus Pinout soner A BEG eet hes as 13 APPENDIX E RETETEN COS ia obersts eler Sate doses dvtnben ts tadodsdbebeaed duds e a e Aa 15 APPENDIX F Suppor tia ceceno nune n aa e e a a E ne eN 16 TABLE OF TABLES Tabl
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