Peter wrote:Dave wrote:Of course, a 68EC030FN40 with caches will be a bit faster than an FLX68000 at 66MHz that only has a few bytes of instruction cache.
Not just the caches, but the 68EC030 has 2.6 times faster bus throughput per clock. So even with zero-wait RAM, the FLX68000 has no chance.
If EVERYTHING on the die except the FLX68000 core is disabled, they run with clean bus signals up to around 90 MHz. At 66MHz, the total memory bandwidth is only about the same as a 68EC020 @ 24MHz due to the limited bus width.
The FLX68000 is an interesting chip for a future "improved Gold Card" but would only come close to SGC speeds. The SGC with a 68EC030/40 would be about 60% faster.
Now, the Coldfire V2 that Nasta intended to use for the Goldfire boards.... That's something else!