Questions - Setting up a SRAM board in S-100 / Altair system?

But on the bright side, this thing pretty much works! Fixed the stuck-on LED, still need to do some debugging. Something is up with the PROT function - the switch doesn't enable the LED (or protect the memory) - but if you play around toggling with the PROT/UNPROT it will suddenly scramble the machine's memory and set the CPU running wild. Very weird, I need to look into that one next.. That said, it does run the sample code in the operator's manual just fine.. the little program that adds two numbers in 10000000 and 10000001 and stores the result in 10000010. Ran it a dozen times with different values, works as expected. And that's a major improvement. Basically, it seems that the DRAM card was simply never being enabled for one reason or another. ?