I've been beating my head on the desk, printing whole PSRs, analyzing them, entering to what I believe is supposed to be the correct GKB chip, and 10 entries later I find that what I was basing the GKB on, was wrong. My current dilemma is those for MN and the use of GKB00026 or GKB00038. I've tried using GK002776 & GK003268 as well as others to school myself, but apparently that doesn't work. I've Googled for any documents that may show what such-and-such boot prom was with replaced with that such-and-such number, with no luck. I did find one for Keychips, though.
At first I thought is was the type of Optional Spectrum Display. Nope. Then I thought it was that one of them the Acceptor Limit was limited to $3,000. Nope. Then it was that one of them had Secure Standard Validation as an option. That wasn't it either. Then I thought it was that one said not to use the WAMM Address of 0. You guessed it, nope. I even went as far as thinking maybe it was the Play History (10 or 25 games) that made the difference in which GKB to use. That was a dead end too. Other than the differences I've already listed, both types of game PSRs (GK002776 & GK003268) are EXACTLY the same. I'm starting to believe that IGT just flipped a coin to determine most choices.
The PSRs for GKB00026 and GKB00038 indicate they offer ONLY External Authentication. I have also learned they are both for NON-Server based installation.
So if anybody knows what else to look for in a game's PSR that's missing the Boot Prom (GKB) number, I would love to be schooled on this. Thanks.