HelenOS sources

MALTA_PCI_PHYSBASE   45 kernel/arch/mips32/include/arch/mach/malta/malta.h #define MALTA_PCI_BASE		PA2KSEG1(MALTA_PCI_PHYSBASE)
MALTA_PCI_PHYSBASE   53 kernel/arch/mips32/include/arch/mach/malta/malta.h #define TTY_BASE		(MALTA_PCI_PHYSBASE + 0x3f8)
HelenOS homepage, sources at GitHub