Altair 8800 Help

So, here's the dilemma. The PROM board is currently configured at a start address of 1 111 100 000 000 000 (174000 Octal, or 0xF800). I plugged all of the PROMs into the sockets (there were five different ROMs that I found, including one that had a label that indicated that it was some kind of BOOT ROM). I started examining memory at 0xF800, and found that most all of the PROMs contained all zeros...either erased, or suffering from failure due to extreme age (date codes of '76), and/or no covers over the windows. The one PROM that responded was the one that had the label hinting that it might be a boot PROM. So, I wrote down the content of the PROM and went about hand disassembling it. It does indeed appear to talk to the floppy controller, which is hard-coded at I/O Addresses 0x10, 0x11, and 0x12), as there are a lot of IN and OUT instructions referencing these I/O addresses. Looking at the various absolute jump addresses in the ROM, it appers to be coded to run at 0x4Cxx, or 046xxx Octal. If I set the start address of the ROM board to make this ROM appear in the proper place, it'll conflict with the RAM installed in the system.