IBM Aptiva Hardware Handbook page 46

Table 5: S registers (Continued)
Register Function
S9 Carrier detect response time
S10 Carrier loss time
S11 Touch-tone dialing speed
S12 Escape character detect time
S13 Reserved (Do not use)
S14 Echo, response, dialing, originate/answer
S15 Reserved (Do not use)
S16 RDL, Clear-Down, Retrain Response
S17 Reserved (Do not use)
S18 Modem test timer
S19 Reserved (Do not use)
S20 Reserved (Do not use)
S21 Originate-only, line, DTR, DCD, DSR, and Long Space Disconnect
S22 Speaker, M/B ratio and response
S23 DTE data rate, parity, and guard tone
S24 Reserved (Do not use)
S25 Data Terminal Ready delay
S26 RTS to CTS delay interval
S27 Async/Sync operation, clock source, DCE speed
S28 Power-on connect, call-back security, CCITT/Bell mode
36 S registers
Range/units
0-255 /10ths of a second
0-255 /10ths of a second
50-255 /milliseconds
0-25 /50ths of a second
Bit-mapped register
Bit-mapped register
0-255 /seconds
Bit-mapped register
Bit-mapped register
Bit-mapped register
0-100 seconds
0-255 /100ths of a second
Bit-mapped register
Default
6
14
95
50
None
None
None
None
None
0
None
None
None
None
None
None
5
1
None
None