Error in MAX+PLUS II software with MAX7000 .pof files

POF files can't be disassembled, at least with any publicly available tools (Altera probably had some internal tools a long time ago, but they never released them to my knowledge). I see folks asking to do this all the time now, because all they have is a programmed device or a POF file, but have lost the source code.

So unless you can convince the retired folks to track down the source code for you, or you can, you are basically out of luck.

There is one suggestion I can make that allows you to, more or less, see inside a POF file.

Atmel (now MicroChip) offers a function compatible drop in replacement for many of the MAX7000 series CPLD parts. It is their ATF15xxAS series. To support this they have their POF2JED tool that reads an Altera POF file for a supported device, and produces the equivalent JED file for one of their ATF15 series parts. Now the POF file is binary and not readily decipherable, but the JED file is ASCII text only, and is formatted and commented. Along with the datasheet for the fuse layout of the ATF15 series part, looking at this JED file will give you a lot of info what is going on inside the device.

Best solution I know of other that tracking down the original device source code(s).