I have a TS-nvram2 board connected to a TS-7250
and am having problems using the board in linear
or paged mode, I can only see 1MB of the 2MB memory.
I have all jumpers removed and I am able to correctly
see the registers and set the mode to linear or page mode
and access the memory on the board.
The PC-104 bus on the TS-7250 has 21 address bits which provides
access to 1MB of the 2MB TS-NVRAM2 board, when accessing
the NVRAM2 board via the base address of 0x21800000.
The TS-NVRAM2 documentation says that placing the board in
linear mode will give a TS-ARM access to all 2MB for space,
how is this possible without using page mode if there
are only 21 bits of address space on the PC-104 bus?
Also, the TS-NVRAM2 documentation says the base address
of the RAM is at 0x2A800000 when placed in linear mode.
I did not find that doing a mmap to the base address of
0x2A800000 worked correctly, 0x21800000 worked.
If I set the NVRAM2 board in page mode, I can page/access the
first 32 pages, 1MB, but when access the second 32 pages,
it doesn't seem to function.
Any ideas? Anyone else tried using this board?
Thank you,
Craig
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|