🚀 go-pugleaf

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."