Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!carroll1!jeff From: jeff@carroll1.cc.edu (Jeff Bartig) Newsgroups: sci.electronics Subject: Re: MC68705 development Message-ID: <2015@carroll1.cc.edu> Date: 31 Jul 90 02:55:40 GMT References: <1990Jul29.201446.23082@zoo.toronto.edu> Organization: Carroll College-Waukesha, WI Lines: 30 henry@zoo.toronto.edu (Henry Spencer) writes: ]Motorola is happy to supply schematics and board layout for a programming ]board that takes an EPROM and a 68705 and has the 68705 transfer the ]contents of the EPROM to the 68705's EPROM. In fact, that is the only way ]to program the 68705; it has to program itself, you can't do it externally. ]Given this, the problem is reduced to programming an EPROM, for which ]innumerable solutions are available. Check out page 82 of the Sept 1989 edition of Radio Electronics. They have plans for building an 68705P3 programmer. It takes the contents of a 2716 EPROM and programs the 68705's internal EPROM with it. I believe they also had another article in the next months edition that discussed some applications using the 68705. I have Motorola's 68705PGMR board, so I haven't had a need to try out the programmer shown in the RE article. I received it earlier this year, but I haven't had time to play with it yet. It is for programming the 68705C8 processor. I believe it will take data either from a host computer (PC or Mac) or from a 2764 EPROM. This kit comes with a disk containing software to download from a PC and a simple assembler. Both of these are also available from Motorola's BBS at (512) 891-FREE. Jeff -- Jeff Bartig, Carroll College | "The sooner you fall jeff@carroll1.cc.edu | behind, the more time you uunet!marque!carroll1!jeff | have to catch up."