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5-56 ES45 Owner's Guide
5.14.8 com*_modem
The com1_modem and com2_modem environment variables are used to
telltheoperatingsystemwhetheramodemispresentontheCOM1or
COM2 ports, respectively. From the settings of these variables, the op-
erating system determines whether the port should assert a signal
DTR.
Syntax
set com*_modem modem_value
modem_value Defined values are:
on—Modem is present.
off—Modem is not present (default value).
IfyouattachamodemtotheCOM1orCOM2port,setthemodem_value to on.
This setting tells the operating system to assert a DTR (data terminal ready)
signal to let the modem know that there is hardware attached. The modem re-
sponds with a DSR (data set ready) signal.
Example
P00>>> set com1_modem on
- AlphaServer ES45 1
- Contents 5
- Chapter 5 Firmware 7
- Chapter 6 Remote Management 8
- Chapter 7 Troubleshooting 9
- Chapter 8 Specifications 9
- Intended Audience 15
- Document Structure 15
- Documentation Titles 16
- Support Resources 16
- Chapter 1 17
- System Overview 17
- 1.1 Model Differences 18
- 1.2 System Enclosures 19
- System Overview 1-5 21
- 1.4 System Chassis—Rear View 23
- Pedestal 24
- 2 3 4 5 6 26
- 1.7 System Motherboard 28
- 123 4 5 6 7 8 910 30
- 00111222 36
- 1.10 Removable Media Storage 38
- 1.11 Storage Subsystem 39
- 1.12 System Access 40
- 1.13 Console Terminal 42
- Chapter 2 43
- Operation 43
- 2.1 PoweringUptheSystem 44
- 2.2 Power-Up Displays 45
- 2.2.1 SROM Power-Up Display 46
- 2-8 ES45 Owner's Guide 50
- 2.3 SRM Console 52
- Example 2–5 Show Boot* 56
- Example 2–6 Show Config 58
- Example 2–7 Show Device 64
- Example 2–8 Show Memory 66
- 2.6 Setting Console Security 68
- Example 2–9 Set Password 69
- Example 2–10 Set Secure 71
- Example 2–11 Login 72
- 2.6.4 Returning to User Mode 74
- 2.7 Updating Firmware 75
- 2.7.1 Firmware Update Utility 76
- Operation 2-35 77
- 2.7.2 Manual Updates 78
- Chapter 3 83
- Booting and Installing 83
- 3.1 Setting Boot Options 84
- 3.1.1 auto_action 85
- 3.1.2 bootdef_dev 86
- 3.1.3 boot_file 87
- 3.1.4 boot_osflags 88
- 3.2 Booting Tru64 UNIX 95
- Example 3–2 RIS Boot 97
- 3.4 Booting Linux 101
- Example 3–4 Linux Boot Output 102
- 3.5 Booting OpenVMS 104
- Example 3–6 InfoServer Boot 106
- Chapter 4 111
- Configuring and Installing 111
- Components 111
- 4.1 Removing Enclosure Panels 113
- V @ >240VA 117
- 4-10 ES45 Owner's Guide 120
- 4.4 Memory Allocation 122
- Pedestal/Rack 125
- 4.7 CPU Configuration 129
- 4.8 Installing CPUs 131
- 4.9 Memory Configuration 133
- Unstacked 134
- 4-26 ES45 Owner's Guide 136
- 4.10 Installing DIMMs 138
- 4.11 PCI Configuration 141
- 4.11.1 Model 1B PCI Backplane 142
- 4.11.2 Model 2B PCI Backplane 143
- 4.11.3 Model 3B PCI Backplane 144
- 4.12 Installing PCI Cards 145
- 4.13.1 Disk Drive Status LEDs 151
- LED is on 152
- LED is off 152
- LED is flashing 152
- 4-44 ES45 Owner's Guide 154
- PKO974-0A 157
- PKO975-0B 159
- Figure 4–24 Fan Locations 161
- PKO976-00 162
- 4.16 External SCSI Expansion 163
- Chapter 5 165
- Firmware 165
- 5.1 Console Overview 166
- 5.2 Invoking the SRM Console 167
- 5.3 SRM Command Overview 168
- Example 5–1 Help (or Man) 174
- Example 5–2 Show Config 175
- TOSHIBA CD-ROM XM-6302B 177
- Example 5–3 Show Device 181
- Example 5–4 Show Fru 182
- Example 5–5 Show Error 185
- Example 5–6 Show Memory 186
- Example 5–7 Show PAL 186
- Example 5–8 Show Power 187
- Example 5–9 Show Version 188
- Example 5–10 OpenVMS Boot 189
- 5.7 Testing the System 191
- Example 5–12 Crash 193
- Example 5–13 Continue 195
- 5.10 Reading a File 196
- 5.11 Initializing the System 197
- 5-34 ES45 Owner's Guide 198
- 5-36 ES45 Owner's Guide 200
- Bootdef_dev dkb0 204
- 5.14.1 auto_action 208
- 5.14.2 bootdef_dev 210
- 5.14.3 boot_file 211
- 5.14.4 boot_osflags 212
- 5.14.5 com*_baud 216
- 5.14.6 com*_flow 217
- 5.14.7 com1_mode 218
- Firmware 5-55 219
- 5.14.8 com*_modem 220
- 5.14.9 console 221
- 5.14.10 cpu_enabled 222
- 5.14.14 kbd_hardware_type 227
- 5.14.15 language 228
- 5.14.16 memory_test 229
- 5.14.17 ocp_text 230
- 5.14.18 os_type 231
- 5.14.19 pci_parity 232
- 5.14.20 pk*0_fast 233
- 5.14.21 pk*0_host_id 234
- 5.14.22 pk*0_soft_term 235
- 5-72 ES45 Owner's Guide 236
- Examples 236
- 5.14.23 tt_allow_login 237
- Chapter 6 239
- Remote Management 239
- 6.1 RMC Overview 240
- Remote Serial Terminal 242
- 6.2.1 Bypass Modes 244
- 6.3 Terminal Setup 247
- 6.5 Entering the RMC 249
- 6-14 ES45 Owner's Guide 252
- Remote Management 6-15 253
- Field Meaning 253
- 6-16 ES45 Owner's Guide 254
- RMC> power on 256
- Returning to COM port 256
- RMC> power off 256
- 6.8 RMC Command Reference 265
- RMC> set alert 272
- RMC> set com1_mode 273
- 6.9 Troubleshooting Tips 277
- Chapter 7 279
- Troubleshooting 279
- 7.1 Power-Up Error Messages 280
- Table 7–1 Error Beep Codes 281
- 7.1.2 Checksum Error 282
- 7.1.3 No MEM Error 284
- 7.2 RMC Error Messages 285
- 7.3 SROM Error Messages 287
- 7.4 SRM Diagnostics 289
- 7.4.2 Show Device Command 290
- 7.4.3 Test Command 290
- 7.4.4 Show FRU Command 292
- Example 7–6 Show Fru Command 293
- 7.4.5 Show Error Command 294
- 7.4.6 Show Power Command 295
- 7.4.7 Crash Command 296
- 7.5 Troubleshooting Tables 297
- Table 7–5 Power Problems 298
- Table 7–8 Boot Problems 301
- 7.6 Option Card Problems 303
- Chapter 8 305
- Specifications 305
- 8.1 Physical Specifications 306
- Operating 307
- H9A10 M-Series 309
- H9A15 M-Series 309
- 8-6 ES45 Owner’s Guide 310
- 8.3 Electrical Specifications 311
- 8-8 ES45 Owner’s Guide 312
- 8.4 Regulatory Approvals 313
- 8.5 Acoustic Data 314
- Linux, 3-19 315
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