[openbeos] Re: is system_time(); an expensive call?

to implement actual PS2 communication in my driver i have to read and write
to different io addresses.
the keyboard addresses for input and output are 0x60 and 0x64.

i suspect that i have to call map_physical_memory.
this means that i have 4 memory area each 1 byte long? (kb in, kb out, mouse
in, mouse out)

is this correct?

kind regards,
    Bruno.

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