I am not sure I understand your question, but if you are looking to use nCS1 to select an external device, the signal comes off the SODIMM connecter J1C pin 10. Any memory reads or writes in the range of 0x10000000 to 0x1FFFFFFF will select the nCS1 area and cause nCS1 to drive low based on the parameters defined in the Bank Configuration Register BCR1 at 0x80002004.

Try rephrasing your question if this doesn't help.

For those also looking to use an external device in memory area 1, you will want to remember that LogicLoader does not map all physical memory. You must use the 'remap' command to do this.

losh> remap 0x10000000 0x10000000 0x200000

Another note is to be sure you are setting up the BCR# register correctly for how you expect to use the area. For example, on reset, the BCR1 register does not allow proper writes to this area.
For example, if I wanted a 32 bit, writable area, I would use:
losh> w /w 0x80002004 0x2000ffe0

Here are two decent application notes from Sharp, if you have questions about timing of the bus control signals and can't find it in their user guide or data-sheet. For timing details, the Technical Datasheet for the LH7A400 is your best bet.
http://document.sharpsma....xxx_StaticMemory.pdf
http://document.sharpsma....LH7A4xx_SMC-Diff.pdf
http://document.sharpsma....atasheet_lh7a400.pdf

Thanks,
-Mike A.