There are two versions of the CBL loader (cbl5 and cbl8). One runs only on the PDP-5, and the other only on the PDP-8. The only actual change is the ordering of instructions around a "7417" instruction, which skips on the PDP-5 and not on the PDP-8. I don't know why an ordering that would run on both machines was not chosen. The other thing I have placed here is a patch for some version of the PAL assembler. I also found a corrupted CBL binary of the patched assembler, which I have attempted to repair here. With the exception of decus-5-26.pal (the patch), the sources here are just disassemblies of the binaries. Vince