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> There is a file called gdb-4.16-bdm-patches.tgz which includes patches > for gdb-4.16 to operate via bdm. It includes schematics for a bdm > interface. BUT: It will only work if gdb is able to upload the code > via bdm. So you _need_ to have RAM properly connected to /CSBOOT if > you want to avoid kludges like having an EPROM on /CSBOOT which > set up things and jumt into RAM afterwards. I'm not sure if you meant this exactly, but just to clarify: You don't have to use /CSBOOT with your RAM. Just be sure to have a *.bdmmb macro file that loads the appropriate CSOR and CSBAR registers so your chip selects operate before the file is uploaded (that is what the *.bdmmb file does - it runs before upload). I have a 68333 and a 64Kx16 RAM chip and no FLASH/EPROM. I use CS6,CS7, and CS8 to access the RAM. -tim