I beleive all you need to do to convert "crt" file to a "bin" file is to strip off the load address which is first two bytes in CRT file. Use hex editor such as Hex Workshop. To convert a BIN file back to a CRT, you need to know what address space it is intended to load to and then prefix the BIN file with these two bytes. You can also do this in editor such as Hex Workshop. ----- Original Message ----- From: Miraglia, Walter To: torontocbm@xxxxxxxxxxxxx Sent: Thursday, April 23, 2009 10:26 PM Subject: [torontocbm] Re: C64 and c128 external cartridge files... Ok I found cartconv.exe and know how to use it to convert .crt files back to bin. Going to try one now. and burn to 27128.. J I hope I don't kill anything. I really should get a blog eh? Hello? Anyone out there? From: torontocbm-bounce@xxxxxxxxxxxxx [mailto:torontocbm-bounce@xxxxxxxxxxxxx] On Behalf Of Miraglia, Walter Sent: Thursday, April 23, 2009 8:25 PM To: torontocbm@xxxxxxxxxxxxx Subject: [torontocbm] C64 and c128 external cartridge files... Does anyone know where I can find some? I've erased some eeproms I had hanging around, And want to try out my new 8/16k cartridges with 28 pin rom socket. J Anything would fun at this point. J cheers. By the way the programmer is a William Eprom Burner standard Dual power one Board marked 3B or 4E ( I use it in 3B mode ) Seems to work well. The eprom eraser I go was only 29.00 bucks and has little Drawer and timer on it. Very cool. J Either way, if anyone has any links to share for bin files, That would be great. cheers. J just playing around at this point just to get familiar with it all. J