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Table 6.6.
Function of Each Register < 4 / 4 >
I/O address
03FEH
MSR : Modem Status Register
D7
DCD
DCD
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.
BX710 series User's Manual
Description
D6
D5
D4
D3
D2
RI
DSR CTS
DDCD TERI DDSR DCTS
Delta data carrier detect
CTS
DSR
RI
D1
D0
Delta CTS
Delta DSR
Trailing edge RI
6. Appendix
123
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