Michael <bele...@bsdmail.de> wrote: > I've got me a PCMICA adapter for compact flash cards. It is recognized > and basically works, but the read/write performance is really bad.
Yes. These purely mechanical adapters don't support DMA and all data must be transferred by the CPU with very, very slow accesses (8 MHz ISA-style bus). It may have made sense 15 years ago, but it doesn't now. There were a few smart Cardbus adapters out there that provided CF access without completely bogging down the CPU, but they are rare, comparitively expensive, and we don't have a driver. (NetBSD's njata(4) could be ported.) -- Christian "naddy" Weisgerber na...@mips.inka.de
