Re: [ts-7000] about address pins on pc/104

["Rich Wilson" <>]

When you do the mmap, the pointer returned corresponds to the first
address of the area you mapped. For example, if you map the 8-bit
I/O register space using mmap, and if cp is the value returned,
then *cp references address 0 of I/O space on the PC104 bus. *(cp+2)
accesses address 2 on the PC104 bus, etc. If you map the
entire 1 MByte in the mmap call, then you may reference
*(cp+x), where x can be up to 1 MByte.

Rich

On 2/5/07, HOSAM YOUSIF <> wrote:

hi all..
the first question i can ask that i have now some c-codes for my
ts-7250 all of this code have the same part that is open"mem/dev" then
using start=mmap to put the first using address in pointer...
BUT!!!!!i want to write a code to out the address i choose from the
address pins(A0-A19)on pc/104....plz any one help me i can't understand
this point and why always they map the address to virual address.
thanks alot

-- 
Rich Wilson


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