Sit on the money for just a little longer and get a Minimig mainboard and some old Dell/Compaq/ Laptop for a few cents. Then normally I guess all that's left to make it a working combo is soldering some adapter cables to get signals on/from the right pins.
Why Minimig mainboard?
- A500 compatible
- New
- Due to FPGA big potential for other projects as well
- Low power consumption
- Has a scan-doubled VGA output
- Has PS/2 connectors for keyboard
Why an old PC laptop?
- Shouldn't cost a limb and an arm
- Should have the right connections (or atleast connections that could easily be adapted)
- Gives a good reason for printing a nice little sticker to be stuck on the case: "What's an Minimig doing inside a Satelite? A lot more than the PC-board ever did!' ;-)
Cost wise? All depends on the final price of Minimig and the price you pay for the laptop.