I've played with crdfil.rom a little with my m100+REX, it seemed to work fine. I really liked it, just didn't have much need.
You need a regular Intel HEX file to binary converter... That would depend on what OS you use... Or you can grab it at http://www.sdc.org/~goosey/m100/crdfil.100.rom.zip that is just a plain zipped .bx file. Willard
