>That was the theory anyway. In practice, however, I hit the
>limit of my budget. A four-layer mainboard cost far too much
>to have fabricated in one-off (I was quoted $400 for a single
>four-layer FR4 about the size of a 2.5" hard disc). Two-layer
>just doesn't provide enough space for the various address and
>data tracks.

Check out Olimex, as they will do a 4 layer eurocard at reasonable cost. You
may need to double check your drill sizes though, as they use a limited
range and have restrictions on track sizes, for their cheap boards.

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