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Maxc OperationsTable of Contents

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Table of ContentsMaxc Operations

Maxc Operations

by Edward R. Fiala, Charles M. Geschke, Edward Taft, and Ronald L. Weaver

Maxc Document 18.7
January 1, 1982

This document describes many of the commonly used procedures for Maxc operation, as well as a number of uncommon procedures used during system debugging and maintenance. This is intended primarily as a reference document for system personnel. However, in the absence of system personnel, any user should be able to restart Maxc from a Tenex crash using the procedure outlined in Section 2.

XEROX
PALO ALTO RESEARCH CENTER
3333 Coyote Hill Road / Palo Alto / California 94304

SectionPage

1.Introduction1
1.1Overview of the Maxc System1
1.2A Word on Terminals and Consoles2

2.Tenex Crashes3

3.Power Up10

4.Power Down11

5.Loading the PDP-10 Emulator12

6.Starting Tenex13

7.Stopping Tenex14

8.AltIO16
8.1.Calling AltIO16
8.2.AltIO Commands17

9.Maxc2 Midas Operation20
9.1.Starting Midas20
9.2.Midas Display20
9.3.Midas Command Menu21
9.4.Keyboard23
9.5.Command Files24
9.6.Loading Programs26
9.7.Dumping Microprograms27
9.8.Tenex Microcode27
9.9.Power On-Off27
9.10.Testing Through the Maintenance Interface29

10.Operating Tenex Microcode from Midas31

11.Interpreting Checker Failures33

12.Using Micro-Exec34
12.1.Tenex Disk Structure34
12.2.Micro-Exec Command Descriptions35
12.3.Micro-Exec Command Summary40

13.Hardware Diagnostic and Maintenance Procedures42
13.1.Running Microprocessor Diagnostics42
13.2.Running PDP-10 Diagnostics44
13.3.Memory Maintenance45
13.4.Disk Maintenance47
13.5.TM49
13.6.MemBash49
13.7.SMIDiag49
13.8.AITest49

14.Recovery from Checkdsk Errors50

15.Bsys Operation53
15.1.Backup Procedures53
15.2.Incremental Dumps54
15.3.Full Dumps55
15.4.Full Backup to Tape57
15.5.Continuing Interrupted Dumps57
15.6.Restoring Files from Backup57
15.7.Restoring the Entire File System58
15.8.Archive Procedures59
15.9.Organization of the Archive Tapes60
15.10.Archiving Files to Tape60
15.11.Retrieving Files from Tape62

16.Contents of the Alto Disk64

17.Software Maintenance Procedures65
17.1.Midas65
17.2.AltIO65
17.3.TM, MemBash, SMIDiag, Alto Microcode66
17.4.Tenex and Diagnostic Microcode66
17.5.Tenex66

18.Local Memory Chip Charts67

19.Creating and Destroying Maxc Accounts68
19.1.Obtaining a Maxc Account68
19.2.General Information About Maxc Directories68
19.3.The EcCREATE AND EcPRINT Commands72
19.4.Creating a Maxc Directory75
19.5Editing the Grapevine Data Base77
19.6.Changing the Password and Other Modifications to Directories78
19.7.Destroying a Maxc Account79
19.8.Operations on MESSAGE.TXT Files80
19.9.Reinstantiating a Destroyed Directory81
19.10.Retrieving Archived Files for Defunct Directories82
19.11.Printing Accounting Information82

20.Miscellaneous Maxc Room Procedures83
20.1.Updating the Arpanet Host Name Table83
20.2.Periodic deletion of SYSTEM files84
20.3.Changing PARC-GUEST Password84
20.4Before doing a FORCED ARCHIVE84
20.5IMP Deadlock Problem85
20.6Deleting an ]ARCHIVE-DIRECTORY[85

21.Appendix86
21.1.Files Comprising this document86
21.2.Changing and Printing this document87
Figure 1(Old Bipolar Card Chip Changing Map)90
Figure 2(New Bipolar Card Chip Changing Map)91
Figure 3(MAXC Computer Memory Board Location)92
Figure 4(MAXC Memory Board Chip Location)93
Figure 5(Files-only account protection guide)94
Figure 6(Application for MAXC Files-Only Directory)95
Figure 7(Application for PA Registry, Mailbox, Maxc Login, or Ivy
Directory [Xerox Palo Alto employees only])96
Figure 8(Application for MAXC Login Directory [Non-Xerox and
Xerox employees not at PARC or Palo Alto SDD/SD])97

MAXC Room Power Down/Up Procedure98