I'm (still) working on getting Linux running on my Mobilon Tripad (aka Vadem Clio). I'm running linux-vr hacked up to 2.4.5-ish, and I'm currently trying to get PCMCIA working (built into the kernel; not a module, since I need to access the compactflash card as root and building pcmcia as a module turns off both PCMCIA ports at boot time). My current problem: it sees the controller (VG-469), sees the card, finds an IO port.. but can't map it anywhere. The PCMCIA is basically on an ISA bus, so I believe the card needs to be mapped to low memory (under a meg), but the system memory takes up the first 16 megs, leaving none: > -more /proc/iomem << /proc/iomem >> 00000000-00ffffff : System RAM 00100000-0023de17 : Kernel code 0024f280-00260fff : Kernel data (I had moved the kernel's starting address for this kernel; the default for my platform is start the kernel at 00002000) On x86, this problem doesn't exist because there's a hole in the system memory map between 640k and 1MB, so the PCMCIA driver would probe and find something like 0c0000-0cffff or 0d0000-0dffff to be clean, whereas those segments are quite unavailable on the Clio. One possible (untested) solution would be to simply remove a section of RAM from the memory map, which would effectively duplicate the x86 memory hole and allow the card to be mapped there. Would this work? It seems a bit strange that I would have to give up some physical memory for PCMCIA. Oh, and if I modify the PCMCIA driver so it probes memory above 16M, it succeeds and marks them as clean, but the card refuses to map to anything over a meg; again, probably because it's ISA and ISA is limited to that. thanks in advance, -jim
