68k homebuilts

IIRC, the 68020 has the feature that you can set the bus width by the states of a couple of pins. This was normally done to allow efficient access to 8-bit I/O devices (you can change the states of these pins depending on the current address ,of course), but there's no reason why you shouldn't hold the pins in the states for an 8-bit data bus and just have 8 it memory. Of course it's slower (4 memory cycles for each 32 it access), but it will work. 'The Art of ELectronics' is IMHO a book every electronics engineer should own. There's a lot of good stuff in it. Sure there are the odd things I disagree with, there are things I'd do differently, but by the time you've read it, you'll know enough to be able to work out how you'd want to do things. My criticism of the Student Manual is that as it was written for a university course, it assumes you have access to some nice test gear (like a 'scope, bench PSU, etc). This means the esperiments possibly can't be done by the average hobyist just starting out. But again there's a loot of good stuff in it, and I don't think you need too much exotic stuff for the 68008 circuits. -tony