EPROM EMULATOR USER`S MANUAL MODEL EE1M
Contents
1. longer the download cable the higher the probability you will exceed the noise margins We have many customers successfully using 25 or more of cable but we cannot guarantee their proper operation 6 If you do buy a longer modular cable be sure to purchase one that is wired the same as the one provided 6 conductor 1 to pinl Note that modular cables can be purchased in straight through or cross over configurations 7 If you have inserted the into a 28 pin socket verify 1 It is inserted so that the ground pin on pin 16 is aligned with the ground pin pin 14 of the socket leaving pins 1 2 31 and 32 hanging over the edge of the socket You may need to use a 28 pin socket between and the target socket as a spacer to insure that these pins do NOT short against anything 2 5 volts is applied to pin 32 of the This can be accomplished by soldering a short wire between pins 30 and 32 or by connecting a jumper wire between pin 32 and 5 Volts on the target board If you need additional technical assistance we can be reached at TechTools Technical Solutions P O BOX 462101 Garland TX 75046 2101 Voice or FAX 972 272 93922. EPROM EMULATOR USER S MANUAL MODEL EEIM Version 1 1 INTRODUCTION Thank you for selecting a Technical Solutions product We have made every attempt to provide a quality product at an affordable price Our goal is to provide tools for the Engineer Technician and Hobbyist that are inexpensive but fully functional If you have any problems or comments please don t hesitate to call or FAX us and let us know The uses 128 KBytes of static RAM to emulate EPROMS up to 128 KBytes in size An IBM compatible computer PC is used to down load object code into the RAM The RAM is dual ported allowing both the PC interface circuitry and the target to have access to it When the PC starts to download object code arbitration circuitry disables the target port and enables the PC interface port While the download is occurring the RESET pins are activated holding the target in reset until its port is re enabled INSTALLATION 1 Turn off power to the target system 2 Configure the EE1M for the size of EPROM you are emulating Four jumpers are used to configure the size These jumpers are used to isolate connect the upper address lines from to the internal SRAM Isolating unused upper address lines while emulating a smaller EPROM makes EE1M more immune to target socket variances The lowest jumper connects 13 The upper most jumper connects 16 The following table summarizes the proper settings for each EPROM si
3. atch file Enter LD1M or BLD1M without parameters to see the parameter syntax Most of the parameters should be self explanatory but a few clarifications are in order O xxxxx Absolute starting address of the EPROM s in HEX EXAMPLE If you are placing a 27C512 at the top of memory in an 8086 1M 64K 0000 you would enter 0 0000 This parameter is used for Intel Hex or Motorola S files It has no effect for binary files Binary files are assumed to be absolute binary images of the EPROM Therefor the address of the EPROM is irrelevant W x width in bits Valid width 8 16 24 or 32 bits B x Bank count Valid bank count 1 2 3 or 4 total number of emulators can not exceed four Therefor only the following combinations of Bank count and Data width are legal 1 2 3 or 4 banks of 8 bits 1 or 2 banks of 16 bits 1 bank of 24 bits 1 bank of 32 bits BRWN Re All parameters are optional and can be listed in any order The Printer Port is specified by base address rather than LPTx This allows the use of multi port parallel cards that do not map directly into LPT1 LPT3 Most BIOS DOS compatible printer ports are located at one of the following I O addresses 378 3BC or 278 ADDITIONAL NOTES 1 Most linker locators will generate Binary files quicker than Intel Hex or Motorola 5 files In addition the EPROM Emulator downloads Binary files quicker than the other t
4. is plugged in or if power is applied to the target and therefor the Emulator TROUBLESHOOTING TIPS Verify that the EE1M is communicating with host The LED should turn off during the download and back on after the download If the LED stays on or off 1 Verify that the proper printer port address was specified 2 Verify that the cable is connected properly 3 Verify that the target is powered up during the down load 4 Try a different printer port 5 Verify that the EPROM Emulator is plugged in properly 2 Try using a BINARY file if possible Binary files are simpler and leave less room for mistakes in locating or specifying offsets 3 Verify that the is jumpered properly for the size EPROM being emulated 4 The Emulator and therefor the target must be powered before the object code can be down loaded into the Emulator While the download is occurring RESET and RESET are active to reset the target After completing the down load the reset lines are returned to their in active states If the target attempts to access the Emulator during down loading the reset lines were not connected it will read whatever data is being down loaded at that instant Once object code is downloaded it will stay valid until power is removed or new code is downloaded 5 Remove any extension cables you may have added to the download cable or the target socket We designed the for as much noise immunity as possible but the
5. nks of 8 bit EPROMs The OUT jack of the first is connected to the IN jack of the next EE1M This is repeated up to three times Most Significant Byte of Most Significant bank is loaded into the first connected to the PC The Least Significant Byte of the Least Significant bank is loaded into the last EE1M in the chain Therefor the first byte in the object file will end up in the last EE1M in the chain If four are daisy chained in a 32 bit system the second byte will be placed in next to the last The fourth byte will be placed in the first EE1M in the chain the one connected directly to the PC 9 OPTIONAL Connect a jumper between one of the reset pins on one of the Ms to the appropriate place on the target if automatic reset is desired after each download RESET and RESET are TTL CMOS compatible outputs capable of sourcing 15 milliamps and sinking 15 milliamps 10 IF YOUR TARGET HAS IN CIRCUIT EPROM PROGRAMMING CAPABILITY DISABLE IT The EEIM is a5 Volt ONLY device Programming voltages will DAMAGE the device and will void the warranty Even short surges during power up or reset can be damaging 11 Apply power to the target system 12 Run the loader program We wrote the loader as a command line driven routine rather than an interactive one This allows you to run the program from a batch file without intervention It can be added directly to your Compile Link Locate b
6. wo because the data does not require conversions Therefor for the quickest download times we recommend the use of Binary files It will speed up the linker locator and the download process With that in mind we created a new program BLD1M EXE This program works with BINARY files only Removing the Intel Hex and Motorola S file conversion routines from the downloader eliminates the conversion time the time for buffering an image of the data in RAM and the overhead of HUGE pointers This results in a considerable decrease in download times BLDIM EXE does NOT support multiple banks of EPROMs It DOES support daisy chaining for wider data paths If you are emulating more than one bank you must use the original loader LD1M EXE 2 The Eprom Emulator uses high quality machined pin headers for the target socket pins However they are not very forgiving to being bent We recommend the use of a sacrificial socket between the Eprom Emulator and the target socket This socket protects the Eprom Emulator from mechanical damage If one of the socket pins becomes bent or damaged the socket can be replaced a lot easier than the Eprom Emulator can be repaired This is common practice for most test equipment that plugs into target sockets 3 The RESET and RESET outputs are driven by TRI STATED devices They are active during the download only 4 The loader programs have no feedback from the Eprom Emulator They can not tell if the Eprom Emulator
7. ze the EE1M emulates 2764 27128 27256 27512 27010 16 TOP OPEN OPEN OPEN SHORTED 15 OPEN OPEN SHORTED SHORTED Al4 OPEN SHORTED SHORTED SHORTED 13 SHORTED SHORTED 5 SHORTED 3 Inset the into the target socket BE CAREFUL TO INSERT THE PROPERLY INSERTING THE EEIM BACKWARDS CAN RESULT IN PERMANENT DAMAGE TO THE EEIM OR THE TARGET SYSTEM Pin of the is identified by the small notch in the DIP plug similar to an IC Insert the EPROM Emulator so that this notch points the same direction as the notch on the target socket If you are inserting the into a 28 pin socket insert it so that pins 1 2 31 and 32 hang over the end of the socket This will place pin 3 of the EE1M into pin 1 of the socket You will also need to apply power to pin 32 by connecting a jumper to pin 32 or tack soldering a wire between pin 30 and pin 32 The remaining pins are designed to float un terminated 4 Select an un used printer port on your IBM compatible PC XT AT 5 Plug the supplied DB 25 to RJ 11 12 converter into the selected port 6 Plug one end of the supplied RJ 11 12 cable into the adaptor 7 Plug the other end of the RJ 11 12 cable into the jack labeled IN 8 For target systems with wider data paths or multiple banks of EPROMS multiple EE1Ms can be daisy chained Up to four units can be connected for data paths up to 32 bits wide or for up to 4 ba
Download Pdf Manuals
Related Search