Honored Contributor
Honored ContributorUnless you are trying to upgrade a legacy product, while trying to preserve a large software, or adapter board market, its unlikely that you would deliberately pair incompatible logic standards such as your MC68000 and a new generation FPGA.
As you first pointed out, there are MC68000 devices with LVCMOS compatible logic interfaces, so I would expect most people to select that if they absolutely had to use an MC68000. Although, I would expect a new design to leverage ColdFire or something more closely compatible with the MC68000. In my designs, the FPGAs are used for signal processing. With a new generation FPGA, I can process significantly more data, and generally this means I have to transport more 'results' off the FPGAs. This in turn requires faster external buses, network interfaces, and hence a faster processor. Rather than reusing a specific processor, I try and update to the latest processor with a compatible instruction set, eg., in my case PowerPC processors from Freescale. Cheers, Dave
