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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, and Edward Taft

Maxc Document 18.7
January 30, 1981

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 Crashes4

3.Power Up13

4.Power Down14

5.Loading the PDP-10 Emulator16

6.Starting Tenex17

7.Stopping Tenex18

8.NVIO and ODT20
8.1.Calling NVIO20
8.2.ODT Commands21
8.3.Nova Locations of Interest23
8.4.NVIO Punts24

9.AltIO25
9.1.Calling AltIO25
9.2.AltIO Commands26

10.Maxc1 Midas Operation29
10.1.Conventions29
10.2.Commands30
10.3Special Information31

11.Maxc2 Midas Operation33
11.1.Starting Midas33
11.2.Midas Display33
11.3.Midas Command Menu34
11.4.Keyboard36
11.5.Command Files37
11.6.Loading Programs39
11.7.Dumping Microprograms40
11.8.Tenex Microcode40
11.9.Power On-Off40
11.10.Testing Through the Maintenance Interface42

12.Operating Tenex Microcode from Midas44

13.Interpreting Checker Failures46

14.Using Micro-Exec47
14.1.Tenex Disk Structure47
14.2.Micro-Exec Command Descriptions48
14.3.Micro-Exec Command Summary53

15.DMPLD55
15.1.DMPLD Operation55
15.2.Required Format for Standalone PDP-10 Programs56

16.Hardware Diagnostic and Maintenance Procedures57
16.1.Running Microprocessor Diagnostics57
16.2.Running PDP-10 Diagnostics59
16.3.Memory Maintenance61
16.4.Disk Maintenance63
16.5.TM64
16.6.MemBash65
16.7.SMIDiag65
16.8.AITest65
16.9.TR65

17.Writing a New 10SYS Tape68

18.Recovery from Checkdsk Errors69

19.Bsys Operation72
19.1.Backup Procedures72
19.2.Incremental Dumps73
19.3.Full Dumps74
19.4.Full Backup to Tape76
19.5.Continuing Interrupted Dumps76
19.6.Restoring Files from Backup76
19.7.Restoring the Entire File System77
19.8.Archive Procedures78
19.9.Organization of the Archive Tapes79
19.10.Archiving Files to Tape79
19.11.Retrieving Files from Tape81

20.Loading the Nova Disk82

21.Contents of the Nova/Alto Disk83

22.Software Maintenance Procedures85
22.1.Midas85
22.2.NVIO85
22.3.AltIO86
22.4.TM, MemBash, SMIDiag, Alto Microcode86
22.5.Tenex and Diagnostic Microcode86
22.6.Tenex86

23.Local Memory Chip Charts88

24.Creating and Destroying Maxc Accounts89
24.1.Obtaining a Maxc Account89
24.2.General Information About Maxc Directories89
24.3.The EcCREATE AND EcPRINT Commands93
24.4.Creating a Maxc Directory96
24.5Editing the Grapevine Data Base99
24.6.Changing the Password and Other Modifications to Directories100
24.7.Destroying a Maxc Account101
24.8.Operations on MESSAGE.TXT Files103
24.9.Reinstantiating a Destroyed Directory104
24.10.Retrieving Archived Files for Defunct Directories104
24.11.Printing Accounting Information105

25.Appendix106
25.1.Files Comprising this document106
25.2.Changing and Printing this document107
Figure 1(Old Bipolar Card Chip Changing Map ~ Maxc 1 only)110
Figure 2(Old Bipolar Card Chip Changing Map ~ Maxc 2 only)111
Figure 3(New Bipolar Card Chip Changing Map)112
Figure 4(MAXC Computer Memory Board Location)113
Figure 5(MAXC Memory Board Chip Location)114
Figure 6(Files-only account protection guide)115
Figure 7(Application for MAXC Files-Only Directory)116
Figure 8(Application for MAXC Login / IVY Directory [Xerox
Palo Alto employees only])117
Figure 9(Application for MAXC Login Directory [Non-Xerox and
Xerox employees not at PARC or Palo Alto SDD/SD])118