19 Jun
2012
19 Jun
'12
5:15 a.m.
On Mon, Jun 18, 2012 at 9:41 PM, Dan Roganti <ragooman at gmail.com> wrote:
A very popular book to read
68000 Microcomputer Systems: Designing, and Troubleshooting, Alan Wilcox,
Prentice Hall, 1987, ISBN 0138113998
Looks like Mr Alan Wilcox has written several books on the 68000. I
will be keeping my eye out.
Another source of simple 68K SBC's to experiment
with is an arcade board by
Bally Midway, part#A080-91864-C000. I use two of them here. It has 128KW
Eprom space, up to 4KW Ram space. They are inexpensive, especially if you
ask on Klov.com - the largest resource of arcade info. These were used as
sound boards - so it also includes an onboard DAC and speaker amp, among
the typical peripherals, 6821. You still need to add a serial port for a
console.
Interesting idea. I just looked at a picture of one... That rather
looked like a PAL in the middle, to the right of the CPU... Probably
the addressing PAL... it might not be too hard to make a daughter card
that plugged into the 6821 socket as well, for access to the bus, etc,
as opposed to sitting in the CPU socket and grabbing the signals first
(like the in-the-socket IDE interfaces for the Amiga 500 did).
Depending on what the 6821 is used for locally, it might also not be
hard to remove it entirely and take advantage of its space and
connectivity with a serial chip (which would still need a little help
in the form of a local crystal, typically).
I'm sure the schematics for that board aren't hard to track down -
that would answer a lot of questions.
-ethan