Bart Oldeman wrote: > 2009/6/24 jean-francois simon <jfs@xxxxxxxxxx>: >> i have a dos program using DPMI and making PCI accesses. it runs fine as >> a DOS stand alone. Under dosemu it can make PCI configuration access no >> problem. but when it tries to make PCI memory access then it fails. i am >> trying to access the following PCI MMIO resource at address 0xDFFFF000: >> >> 0a:0a.0 Bridge: Device 1895:0001 (rev 01) >> Subsystem: Device 1895:0001 >> Flags: bus master, medium devsel, latency 64, IRQ 10 >> Memory at dffff000 (32-bit, non-prefetchable) [size=4K] >> Memory at 80000000 (32-bit, non-prefetchable) [size=1024M] >> Memory at de000000 (32-bit, non-prefetchable) [size=16M] >> Memory at dd000000 (32-bit, non-prefetchable) [size=16M] >> Memory at 7e000000 (64-bit, prefetchable) [size=16M] >> >> >> is it possible to access PCI MMIO under dosemu? > > This should be possible using $_hardware_ram: > $_hardware_ram = "range 0xdffff000,0xdfffffff range 0x80000000,0x80100000" etc. > > Bart > thx for the info. i have tried it and it fails with: Page fault: write instruction to linear address: 0xdffff3fc CPU was in user mode Exception was caused by non-available page VFLAGS(b): 010000001010000110 EAX: 01000000 EBX: 00cc8600 ECX: 00cc8600 EDX: 00000615 VFLAGS(h): 00010286 ESI: 00000212 EDI: dffff3fc EBP: 00000000 CS: 0033 DS: 0000 ES: 0000 FS: 0000 GS: 0000 the address is valid since it is that which is reported by lspci. but it seems like a permission issue (CPU was in user mode). i did a "dosemu -s" though. -jfs -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
