BigIDEA Prelim Manual.01
Contents
1. Persistor BigIDEA Preliminary User s Manual Copyright 1999 Persistor Instruments Inc Llvsvvvvvv vv vey Page 16 May 19992. BigIDEA First unplug the CF1 from the RecipeCard or whatever Now plug the backside of the CF1 the side without the CF header but with all 90 pins in a 7 pattern into the topside component side with sockets of the BigIDEA It is possible we ve done it to misalign the pins and damage both boards if powered that way we ve proved it but even the most cursory visual side view inspection will reveal the mistake before any damage can be done so make sure to look at it after you insert it The drawing at right shows a side view of a CF1 BigIDEA RecipeCard system before and after insertion Plug in the RecipeCard Having plugged in the CF1 to the BigIDEA there s only one way to connect the BigIDEA back into the RecipeCard its pins go into the RecipeCard s sockets We learned our lesson by frying a CF1 BigIDEA with powered misalignment so we don t know how much harm can be done by not paying attention Hopefully you will examine the installation and not have to be the first to call us with a damage assessment Powering the BigIDEA Whether powered from the CF1 VBAT or the Molex connector the upper range of the supply must be limited to 16 5 volts and the lower range must be 0 5 volts above the operating voltage selected by J5 One more reminder Never attach a separate supply to the Molex connector while J1 is jumpered There are no fuses no diode isolation and nothing else to protect the two supplies from trying to equalize
3. May 1999 low address bank with zero added to the chip select reference or left for the upper bank and eight added to the reference number Finally the jumper block in the lower right selects one of eight possible slots from the memory bank One jumper connects from a center pin to any of the peripheral pins to complete the selection and the corresponding number gets added to the reference number to complete its selection Fortunately most SandwichCards manufacturers will supply their cards pre configured to conform to the Persistor Instruments guidelines to simplify installation and setup The table below details these selections SC Device Class Base Size cs Default 0 BigIDEA IDE adapter 0000 1024 CS8 FFFF8000 1 other IDE adapter 0400 1024 CS8 FFFF8400 2 ATA Flash Card adapter 0800 1024 CS8 FFFF8800 3 SCSI adapter 0C00 1024 CS8 FFFF8C00 4 PCMCIA adapter 1000 1024 CS8 FFFF9000 5 Quad UART 1400 1024 CS8 FFFF9400 6 other UART 1800 1024 CS8 FFFF9800 7 Ethernet controller 1C00 1024 CS8 FFFF9COO 8 CAN controller 2000 1024 CS8 FFFFAO000 9 USB controller 2400 1024 CS8 FFFFA400 10 IEEE488 Interface 2800 1024 CS8 FFFFA800 11 68k bus to ISA adapter 2C00 1024 CS8 FFFFACOO 12 LCD Display 3000 1024 CS8 FFFFBO0O0O 13 undefined 3400 1024 CS8 FFFFB400 14 undefined 3800 1024 CS8 FFFFB800 15 user circuitry 3C00 1024 CS8 FFFFBCOO 16 parallel I O 0000 1024 CS10 FFFFOOOO 17 parallel A D 1 0400 1024 CS10 FFFF0400 18 parallel A D 2 080
4. aware It includes all of the standard PicoDOS commands plus three new commands ON OFF LPSTOP just for the BigIDEA It s main function sets up your CF1 system to automatically mount a BigIDEA flash card or hard disk as drive D after which you perform all of the normal PicoDOS operations like DIR COPY CHDIR and so on The SetupBigIDEA helper function shows you what you ll need to do to integrate the BigIDEA into your own programs and you can pretty much copy and paste this into your application The ON and OFF commands let you power the card drive on and off and the LPSTOP command shows you what to expect when the card drive is off and the CF1 is in its lowest non SUSPEND operating mode GigaPicoDOS demonstrates the BigIDEA operations and gives you an idea of what to expect in PicoDOS 2 1 but it is not PicoDOS and it s services are not available when you exit GigaPicoDOS and return to normal PicoDOS Until the 2 1 release of PicoDOS you will have to incorporate something like the code from the SetupBigIDEA helper function in each of your programs that work the BigIDEA BigIDEAMax146LPAD BigIDEAMax146LPAD is a minor variation of the Max 146LPFiledAD c example except that it copies the CompactFlash data file to a hard disk when the CF card fills up This simple mechanism necessitates a pause in the acquisition but that s the price of the simplicity You can extend the functionality by providing two files and ping ponging betwee
5. each other probably catastrophically Quick Checkout Before going on let s confirm that what we ve done so far is working Reconnect power and everything should work exactly as it it did in the preinstallation quick test This doesn t prove the BigIDEA is working but we ll know nothing is seriously wrong with the hookup Persistor BigIDEA Preliminary User s Manual Page 5 Copyright 1999 Persistor Instruments Inc May 1999 Installing Cards and Drives Cards and drives connect to the BigIDEA using 44 pin 2mm connectors and 1mm ribbon cables that can be any length up to twelve inches The BigIDEA comes with a single eight inch cable with connectors at both ends and with one additional connector three inches away from one of the ends This one cable actually has many uses It can be used as a eight inch cable and you can get rid of the annoying bump in the middle by prying apart and removing the center IDC connector You can also make it into either a five inch or three inch cable using just a pair of scissors You can also use it to connect two separate single slot PCMCIA adapter boards to the BigIDEA though we re not sure why you wouldn t just buy the dual adapter The BigIDEA s IDE header is shrouded but not polarized and 44 pin IDE cable connectors come in a variety of widths so the shroud does not alwa
6. slave socket and a Type I II or II card in the upper master socket The appendix shows the schematic for the PCMCIA adapter board STi 372 373 374 STS S76 722 a 2 gt aa e Electrically the single adapter and the upper socket of the dual adapter are identical The single has the advantage of lower height 0 34 versus the taller 0 62 height of the dual and the single sells for a little bit less Dual operation really only makes sense when using only flash memory cards The BigIDEA can only power switch the dual adapter in pairs so either both are on or both are off at any given time For flash card pairs that s a small initial startup pulse of current to charge up capacitors and wake the cards processor but each settles down to less than 500uA automatically For hard drive pairs that s instead a huge spinup surge current and twice the already onerous operating current The combination of a flash card and hard drive in a dual adapter is also unwise since the relatively slow flash write operations will incur the full penalty of carrying the hard drive power burden over a long period of time Flash memory cards do not care at all about operating orientation nor do the 512KB and 1GB Calluna 1 8 drives that we ve worked with If you re using something different check the manufacturers data sheets for any restrictions on mounting Various drives have different limitations on vibration and shock and these too should be consi
7. 0 1024 CS10 FFFFO800 19 parallel D A 0C00 1024 CS10 FFFFOCOO 20 counter timer 1000 1024 CS10 FFFF1000 21 Bank switched RAM 1400 1024 CS10 FFFF1400 22 Precision clock 1800 1024 CS10 FFFF1800 23 undefined 1C00 1024 CS10 FFFF1C00 24 2000 1024 CS10 FFFF2000 25 2400 1024 CS10 FFFF2400 26 2800 1024 CS10 FFFF2800 27 reserved for user 2C00 1024 CS10 FFFF2C00 28 custom circuitry 3000 1024 CS10 FFFF3000 29 3400 1024 CS10 FFFF3400 30 3800 1024 CS10 FFFF3800 31 3C00 1024 CS10 FFFF3C00 Keep in mind that these are merely guidelines and implementation considerations may persuade board designers to adopt different strategies Check the vendors documentation as they will likely clearly state if you need to be on guard for potential collisions Persistor BigIDEA Preliminary User s Manual Page 15 Copyright 1999 Persistor Instruments Inc May 1999 1 2 Punch PCMCIA Adapter Schematic LOWER SLAVE UPPER MASTER Pa SI NGLE vyvvvvvvvvvvvvvl PCMCI A IORDY vvv RESET vvv v DD10 71016
8. Persistor BigIDEA User s Manual Copyright 1999 Persistor Instruments Inc All Rights Reserved Revision 1 0 May 1999 PRELIMINARY Introduction The Persistor BigIDEA is a 2 x3 IDE adapter that sandwiches between a Persistor CF1 miniature single board computer and CF1 RecipeCards other CF1 SandwichCard adapters or your custom CFI electronics The BigIDEA allows the CF1 to control 2 5 hard drives 2GB to 14GB 1 8 Type IN PCMCIA hard drives 0 5GB and 1GB or single dual stack PCMCIA TrueIDE flash cards Type II to 440MB The BigIDEA s power switched electronics keeps the current drain below 15uA while you collect and buffer data into RAM or the CF1 s CompactFlash cards When these fill up you spin up the power hungry drive spool off the buffered data then quickly shut it back off Each BigIDEA adds about 0 48 of height to a CF1 systems you can stack several and all BigIDEAs in the system share the same SandwichCard chip select and memory space which leaves your system with up to 31 additional SandwichCard chip selects for other expansion options Drives and Cards connected to the BigIDEA get to use the CF1 s PicoDOS file system so they re directly compatible with DOS Windows9x PCs The flash cards and PCMCIA hard disk plug into standard PC Card slots and automatically mount as logical drives E F etc for extremely fast and easy data recovery The included BigIDEA driver software lets you access the file system t
9. c Persistor BigIDEA Preliminary User s Manual Page 6 Copyright 1999 Persistor Instruments Inc May 1999 Installing a 2 5 Hard Drive The BigIDEA makes no provision for physically mounting your 2 5 hard drive other than by offering a flexible cabling connection Most modern drives can be installed and operated in any orientation but you may need to check with the drive manufacturer for recommendations if you re pushing the technology limits Various drives have different limitations on vibration and shock and these too should be considered when you design the mounting Hard disk drives self heat when running Toshiba MK2104 calls out 15 C maximum rise so you should also provide for ventilation if you ll be running at ambient temperatures where that rise could have the drive working beyond specified limits You should also be aware that even though many of the 2 5 drives have similar top or side mounting holes these are not standard or guaranteed to remain the same from one generate of drives to another even from the same manufacturer About all you can count on mechanically is that 2 5 drives will be 2 75 x 4 0 but that the height may vary from from less than 0 2 to over 0 8 For top mounting drives we recommend slots instead of holes as shown in the drawing below far right On the left side of the drawing are the mounting hole dimensions for two different 2 5 drives we ve actually worked with For our own use we ve attache
10. ctory 3 PCs don t much care about power or startup time so they can interrogate hardware peripherals with no negative consequences Though we ve tried to make the CF1 mimic the simplicity of a PC the BigIDEA and hard drives pose special challenges because 1 There s no standard mechanical mounting arrangement so they can t ship pre configured even if ordered together 2 The vast majority of CF1s will never see an add on drive so PicoDOS doesn t expect to find one 3 PicoDOS can t poke around and look for offboard peripherals without incurring startup delays and in the case of hard drives significant power expenditures This means you have to learn enough about the BigIDEA and various drive options to correctly install the hardware and setup the software Since you ve chosen a CF1 and BigIDEA you probably do care very much about power utilization and will want to learn everything you can about the tradeoffs between convenience and simplicity versus maximum battery life Persistor BigIDEA Preliminary User s Manual Page 2 Copyright 1999 Persistor Instruments Inc May 1999 What s in the User s Guide The remainder of this manual explains how to install configure and properly use your BigIDEA and cards drive Part one describes how to connect the BigIDEA between your CF1 and other peripheral electronics and how to properly setup the board s jumper options for your particular requirements Part two describes the cabling from the B
11. d to the drives with M3 0 x 0 5 thd metric screws with a length appropriate to get about 0 1 to 0 2 of the screw into threaded holes after accounting for board thickness and spacers le 2 750 gt ae 2 750 pl p on 3 o 130 x 330 D my ee A 7 g M3 THD x 4 x f M3 THD x 4 S o k D Oy WO E a 2 430 al ee 2 430 2 430 These drawings are meant to provide some guidance but you must confirm these against a drive in hand or the drive manufacturers specifications before beginning your mechanical design Persistor BigIDEA Preliminary User s Manual Page 7 Copyright 1999 Persistor Instruments Inc May 1999 2 5 Drive Connections Some 2 5 drives have a separate power connector but you do not need this with the BigIDEA Power for the drives is brought over in the 1mm ribbon cable Instead of a 44 pin header most 2 5 drives have a 50 pin header with two pins missing to make one 44 pin header and one 2x2 pin jumper block for drive options discussed ahead Most drives also provide little or no markings to help you properly connect the cable The dimension drawing above shows how to identify pin 1 on the drive and that pin is where you should always connect the striped side of the ribbon cable To save yourself some future catastrophes this would be an excellent time to make some very clear markings on the drive where pin 1 is and where y
12. dered when you design the mounting Hard disk drives self heat when running so you should also provide for ventilation if you ll be running at ambient temperatures where that rise could have the drive working beyond specified limits The PCMCIA adapters have a shrouded 44 pin header which is not polarized so you must take care to make sure that striped side of the cable connects to pin of the adapter which is marked with the big white square Persistor BigIDEA Preliminary User s Manual Page 9 Copyright 1999 Persistor Instruments Inc May 1999 PCMCIA Adapter Dimensions The BigIDEA makes no provision for physically mounting the PCMCIA adapter board other than to provide a variety of mounting holes and breakaway panels with additional mounting holes as shown below 3 000 2 875 2 720 2 500 A AAAA y 2315 Te N 4 130 D i 080 D Persistor BigIDEA Preliminary User s Manual Page 10 Copyright 1999 Persistor Instruments Inc May 1999 Installing Disk Arrays with Multiple BigIDEAs Your CF1 can control virtually any number of BigIDEAs to expand the total storage capacity to record truly huge amounts of data Each BigIDEA adds only microamps to the idle current and each BigIDEA powers up its drive independently of other attached drives However only one BigIDEA can be active at any given time To install multiple BigIDEAs simply follow the in
13. e BigIDEA is the only SandwichCard add on in your CF1 system or if the BigIDEA is the only IDE controller SandwichCard add on you should be able to safely skip the rest of this section If not you may want to familiarize yourself with some simple SandwichCard concepts to help you hurdle any installation difficulties Your CF1 system can support up to 32 SandwichCards and generally most Persistor Instruments and third party SandwichCards will be pre configured to automatically work in your system using default jumper configurations and default initialization specifiers for their respective software drivers This means you usually need to just follow the instructions to copy the associated library and header files into the proper directories and merge them into your CF1 projects However some very complex CF1 systems may be built with SandwichCard components that compete for system resources and you will need to manually reconfigure some boards and make minor accommodations in driver initialization calls to get everything working The diagram below shows the pattern and placement of the recommended 2mm chip select jumper blocks for SandwichCards Inevitably some board designs will face physical constraints that make some other scheme compelling enough to veer from the standard Electrically however the effect will be the same SandwichCard o Chip Selects 1 of 32 1024 Byte Blocks mmm oe HG The CF1 has just two chip selects to provide
14. for system expansion Without something like the SandwichCard chip select circuitry that would limit you to two add on devices With it you can have up to 32 devices but at the expense of a large memory space However with the exception of RAM or Flash almost all I O devices need only a tiny block of addresses for full functionality Each expanded SandwichCard chip select corresponds to a unique block of memory addresses but since the C language and supplied drivers means you will almost never need to be cognizant of these physical addresses we refer to each expanded chip select by a reference number between 0 and 31 The numerical markings surrounding the jumper blocks combine to yield that value based on the installed jumpers In the diagram above the top three pins of the jumper block in the upper left chooses which chip select controls the board If you jumper the right pin as shown the system uses CS8 which you don t really need to know and the chip select reference number begins with zero If the left pin was jumpered the system would use CS10 and the reference number would start with sixteen The lower six pins select the high or low bank of eight addresses and the jumpers must always be moved in pairs admittedly awkward but it saves much circuitry between right as shown for the Persistor BigIDEA Preliminary User s Manual Page 14 Copyright 1999 Persistor Instruments Inc
15. hrough standard C function calls fopen fread fprintf fwrite fseek fclose etc and if you re willing to trade file name size flexibility for the most efficient power utilization use the included recorder library routines to squeezes every last milliwatt out our your batteries Persistor BigIDEA Preliminary User s Manual Page 1 Copyright 1999 Persistor Instruments Inc May 1999 Mechanics The BigIDEA sandwiches between your CF1 and other other electronics ala PC104 and add about a half inch to the height of the system The drawing at right shows that the BigIDEA circuit board is larger than the CF1 and that it juts out far enough in front to preclude front panel access to the CompactFlash In BigIDEA systems the CF card is typically just used as buffer storage so hopefully this will not be a problem The mounting hole pattern is a standard for CF1 RecipeCards and the front two holes CF side line up with the mounting holes on the PicoDAQ RecipeCard and many TEC D other RecipeCards i SAMTEC SSQ 125 23 G D Not Quite Plug amp Play It s unlikely that the IDE drive controller in you PC came with a user s manual or is even mentioned anywhere in the PC s documentation PC s can do this because 1 Their drives and controllers are usually factory installed into convenient drive bays and card cages 2 The PC BIOS and OS were pre configured for the installed drive and controller at the fa
16. igIDEA to you 2 5 drive or PCMCIA adapter Part three tells you how to get PicoDOS to recognize the new hardware and takes through a test run Part four explains how to make PicoDOS automatically work with BigIDEA drives Finally part five describes the various software techniques you can use to make the most of your expanded CF1 system Packing List Your BigIDEA ships with the following items BigIDEA SandwichCard Adapter 2mm configuration jumpers on the BigIDEA with standard default setting 8 3 connector IDE 44 ribbon cable 18 power cable tinned leads to 2 pin Molex C Grid plug Release Notes User s Manual this document Update and Examples Diskette possibly also an update CD See NN Read the Release Notes You must read the printed release notes that shipped with your BigIDEA before attempting to install or run the hardware This is where you ll most likely find the information fed back to us by BigIDEA pioneers and a quick read could save you much time and frustration Persistor BigIDEA Preliminary User s Manual Page 3 Copyright 1999 Persistor Instruments Inc May 1999 Setting up the BigIDEA BigIDEAs install sandwich like between a something and something else Those something elses can be a CF1 a RecipeCard your custom instrument electronics some other SandwichCard peripheral or even more BigIDEAs Typically it s a CF1 on top a BigIDEA in the middle and a RecipeCard or your stuff on the bottom In multiple Sa
17. n them or use the methods demonstrated in the much more complex BigIDEADataLogger example BigIDEADataLogger This builds a low power high capacity data acquisition program from a Persistor CF1 mated to a BigIDEA hard drive adapters and a single Persistor PRCPDAQ PicoDAQ RecipeCard for the analog to digital converter and I O connections The basic operations and features of the system are Continuous recording of to 8 channels of unipolar analog data in the range or 0 to 2 5 volts Sample rates from 50Hz to 1kHz 400sps to 8000sps aggregate 8 bit high or low byte or 16 bit 12 bit resolution samples DOS compatible file system on hard drive for simplified data recovery Automatic startup and relaunch in the event of a system failure 100 second watchdog Three stage data buffering A D to RAM RAM to CompactFlash card CF to hard drive 1mA 50Hz 1Ch to 10mA 1kHz 8Ch average current drain during acquisition Password protection to change settings or erase files This is a much more complex example and additional documentation can be found in the directory containing the project file Persistor BigIDEA Preliminary User s Manual Page 13 Copyright 1999 Persistor Instruments Inc May 1999 Using SandwichCards in your CF1 system Your new BigIDEA add on for the Persistor CF1 complies with guidelines for standard SandwichCard peripherals which should make installation and setup a fairly simple and straightforward process If th
18. ndwichCard systems the stacking order makes no difference The remainder of the installation and setup instructions will assume a simple three board system with a CF1 BigIDEA and PicoDAQ RecipeCard though what s described applies similarly to more complex systems Jumpers Before you plug your CF1 into the BigIDEA you should make sure that the three groups of configuration jumpers are properly installed for your CF1 system These jumpers select 3 3V or 5V IDE voltage separate or common power supplies and the SandwichCard memory slot All of these jumpers are accessible when a CF1 is plugged into the BigIDEA but most other full sized SandwichCards will obscure all or some these when they plug into a BigIDEA 3 3V 5V The 3 3V 5V jumper J5 comes from the factory preset to the 5 volt position and EOF that s where it has to be for hard disk drives and generally where you want it to be ERS for flash cards Flash cards write about 20 faster when operating at 5 volts but they pull about 30 less current when you writing at 3 3 volts However most systems don t spend much of time actually writing so the savings may not be all 3 that significant ij 5 toned p Power Source The power source jumper also comes from the factory installed to let the BigIDEA use the CF1 s VBAT pin 13 as its source to the switching regulator for the IDE drives This is convenient since a single power source and cable works for everything but it also means tha
19. ou want the cable stripe to be so that at some future time you or your technician will be able to confidently reattach the drive without this long lost BigIDEA manual 2 5 Master Slave Options Pins Most 2 5 drives have another four pins separated from the main group of 44 IDE pins for drive options The option pins exist for multiple drive Master Slave configurations that are not supported by the BigIDEA Though this might sound like a cheap and easy way to double your capacity the protocol only works by having the two drives up and running so it s twice the spinup surge current and only a bit less than twice the operating current while filling each drive probably not a goal for you CF1 based system If you need more capacity consider multiple BigIDEAs each powering it s drive independently Generally no jumpers is the correct option for the BigIDEA If you drive came with jumpers installed find out why before running it with the BigIDEA Persistor BigIDEA Preliminary User s Manual Page 8 Copyright 1999 Persistor Instruments Inc May 1999 To work the BigIDEA with PCMCIA hard disks or flash cards including CompactFlash in a PCMCIA adapter you need a single or dual PCMCIA to 44 pin adapter board These are actually the same printed circuit board but the single has one PCMCIA header which can work with Type I H or IIT PCMCIA cards while the dual has a double height header that can take a Type I or II card in the lower
20. structions for installing a single drive adapter but repeat for each BigIDEA in the system You do not need to modify the jumper settings for each different BigIDEA and in fact all of the BigIDEAs should have identical settings At startup the CF 1 interrogates its attached SandwichCards and discovers the unique serial numbers which will be used to select individual BigIDEAs The lowest serial number becomes the default BigIDEA for programs that do not explicitly request a specific unit Persistor BigIDEA Preliminary User s Manual Page 11 Copyright 1999 Persistor Instruments Inc May 1999 Installing BigIDEA Software Always check the separate BigIDEA release notes for instructions that may supersede these directions The release notes will give you up to date installation instructions and late breaking news on any new drives supported by the BigIDEA Latest copies of the release notes can always be found on the BigIDEA page of the Persistor Instruments web site http www persistor com BigIDEAs require PicoDOS 2 0 plus patches or later versions of the CF1 software PicoDOS 2 0 shipped with partially stubbed APIs for BigIDEA operation and require that you install the latest CF1 Patch Lib file into the CF1 Libraries directory The examples that ship with the BigIDEA show how to test for valid patch installations and you should copy these techniques in your software programs PicoDOS 2 1 and later Developer s CDs will ship with full driver s
21. t if the drive turns on and tries to gulp more power than what s left in your batteries the CF1 will die when the voltage drops below about 4 volts To preclude that possibility remove the power source jumper and run a separate supply to connector J1 on the bottom right of the board E m Never connect a separate supply while J1 is jumpered Memory Slot re The SandwichCard memory slot jumper block 40 Chip Selects COmes pre configured for slot 0 as shown in the 1 of 32 1024 Byte Blocks drawing at right If you re constructing a i ESE complex SandwichCard system refer to the 00n appendix for details on setting up multiple TYEE oD SandwichCards otherwise just make sure your s0D0OA 7 BigIDEA looks like the drawing The appendix contains much more detail on SandwichCard memory addressing This is not required reading for working with the BigIDEA Persistor BigIDEA Preliminary User s Manual Page 4 Copyright 1999 Persistor Instruments Inc May 1999 Installing the BigIDEA Plug in the CF1 Before plugging in the CF1 lets also make sure we ve got a working system as a reference starting point Hookup your CF1 and RecipeCard or whatever to a power supply and terminal and make sure you can get to the PicoDOS prompt and that you have the latest BIOS and PicoDOS firmware installed BigIDEAs will only work with version 2 00 or later of both the BIOS and PicoDOS Next disconnect the power and we ll install the
22. upport for the BigIDEA to control Persistor Instruments flash cards CompactFlash and full sized ATA PC Cards 1 8 Calluna PCMCIA hard drives 512KB and 1GB 2 5 Toshiba MKxxxx and IBM Dyla hard drives along with generic IDE hard drive support which may or may not work with other IDE devices The BigIDEA may ship with a supplemental diskette containing updated drivers header files documentation and example programs Check the release notes and if required copy the updated files to the BigIDEA directory in your development PC at MotoCross Support CF1 Drivers BigIDEA which typically starts at C Program Files Metrowerks CodeWarrior Whether installed from the Developer s CD or update diskette the BigIDEA directory will contain something like the following files and directories BigIDEA bin Ilformat pxe low leve format hdfdisk pxe hard drive fdisk partitioning torture pxe hard disk read write torture tests BigIDEA Headers BigIDEA Libraries BigIDEA Docs BigIDEA Examples BigIDEA Stationery CF1 BigIDEA CF1 BigIDEA 4i Persistor BigIDEA Preliminary User s Manual Page 12 Copyright 1999 Persistor Instruments Inc May 1999 Getting Started with BigIDEA Software GigaPicoDOS Example GigaPicoDOS mcp in the BigIDEA Examples directory is a good place to start to familiarize yourself with the BigIDEA GigaPicoDOS is based on the MyPico stationery future PicoDOS 2 1 and builds a custom version of PicoDOS that is BigIDEA
23. ys guarantee proper pin alignment it does however with the included cable Drive headers are neither shrouded nor polarized so it s ever so easy to hook them up backwards goodbye expensive electronics or misaligned by one set of pins poof goes the drive You must take care to connect pin 1 of the BigIDEA header to pin 1 of the drive or adapter and you do this by looking always assigning the striped side of the cable to pin 1 The BigIDEA tries to help with a block of white silkscreen at the pin 1 side but most hard drives give no indication of which side has pin 1 The 44 pin headers on both the BigIDEA and 2 5 hard drives are not symmetrical along the center of the devices and in the field you can figure out which way to hook them together by centering the BigIDEA board with the drive and noting that only one orientation gives a straight line connection between the headers Bad Vibrations Neither the BigIDEA or the hard drives have locking mechanisms for the ribbon cable connectors and rely on the relatively high extraction force of 44 connections to hold the assembly in place This works well for desktop and even laptop computer environments but it may not be sufficient to survive high vibration applications We do not have a generic solution to this potential problem but if you suspect your system will operate in a fashion where the cable could be shaken off you ll need to do something to keep it attached wire ties tak pak clamps et
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