Generating a JEDEC file for the EMP-21 and the GAL16V8

PURPOSE:  In the past, we have used the fuse maps for the PAL16L8 and applied them to the file "gal.txt" for the GAL16V8.  Needhams Electronics wrote this file for their EMP-20 programmer to do just this.  Unfortunately the EMP-21 is too smart for a PAL jedec file with a few added lines.  The EMP-21 does sum checking and therefore it generates errors when programming.  Lattice, the makers of the chip have an utility program (paltogal.exe) that will generate the right jedec file.

PROCEDURE: 

• Modify a copy of  "emp21.jed" in a simple text editor like "Note Pad".
• Save the modified copy under the name of gal.jed in the same folder.
• The copy should have an extention of "jed", but doesn't have to.
• paltogal.exe should be in the same folder.

• Double click on paltogal.exe.   NOTE: It runs in a DOS window.

• Type 2 then enter.  This is the PAL16L8 to GAL16V8 conversion.

• Enter the input file name of gal.  Since its extension is "jed" then we use just the file's name.
• Enter the output file nameof gal1 (number should match bench #).  Don't use an extension because we want it to be a jed extension.
• Enter "A" not "E" to exit.
• Hit "Enter" for the signature.
• That's it!  Go to the "Chip Programming Instructions.htm" page to finish your chip.
• Remember to test your chip in Radd's tester, before you hook it up to your computer.
• Burn both of your GALs now!