PT-S959SDLX / PT-S959SDLXC Series User’s Manual
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Table 6.3. Function of Each Register < 4 / 4 >
I/O address
Description
03FEH
MSR : Modem Status Register
03FFH
SCR : Scratchpad Register
This is an 8-bit, readable/writable register which is available to the user
to allow data to be saved temporarily.