Guide To The Operating System 5.3 Oct82

5. ~ Verst OV\ GUIDE TO THE OPERATING SYSTEM October 1 t 1982 ·....... Configuration . . . . . . . • • • • 1 OS Volume Types ·..• 2 System Files • ·.• 3 ....• • • • 4 Installing the OS How to Boot the OS ··· ··6 · Shutting Down the OS · ···· ···6 Program Development ·• . ·• •8 The as Command Shell. ·•9 The Filer • · • 11 The Privileged Filer. • · · 14 The Asynchronous File System • · • · 16 as Performance • . . . . . . . . . . . • 17 Introduction • Twiggy Bad Block Handling Printers and RS232 Input/Output Stack Size • .... • 1 • • 18 • 19 • • • 21 · . . . . . . • 22 Alternate Screen • · . . . . • • • • 24 Pas lib • • · . 24 The Pascal Heap • • • 28 ·.. Intrinsic Units The OS Interface • • • 30 Add! tions to the OS • • 41 as Error Messages • • 46 Guide to OS Confidential INTRODUCTION This document explains how to use the 5.3 release of the Operating System. It includes all relevant material from prior releases and also describes the new features of this release. The User's Guide does not explain each feature of the OS in detail; instead, it explains operations such as installing and booting the system, and presents the details of the Command Shell and Filer commands (see the Operating System 'Reference Manual for a complete description of the Operating system). Because the Operating System Reference Manual is not updated for each new release, the User's Guide also contains explanations of any new features or calls that may not fit into the above topics. The User's Guide assumes that the Operating System Reference Manual that you have is dated March 1, 1982. CONFIGURATION The OS boots from either a Profile or a Twiggy. Most people will boot the OS from a Profile, and use another hard disk for the Monitor. The OS restricts how you can use the various devices. The OS treats the Corvus as a source of Monitor files, not as an OS volume. The Lisa screen can be accessed by either the OS or the applications. The Lisa screen can display either the "main screen" that is usually reserved for applications, or the "alternate screen" that is used for Lisabug, and, read and writelns for debugging. There is a MOVESOROC program to change where application readln and writelns are to be displayed. They may be displayed on either the main screen, the alternate screen, or an external Soroc. If you use an external Soroc, you can see both the main applications screen, and the debugging screen at the same time. If you wish to use a Soroc, attach it to channel A of the Lisa. When the OS boots from a Profile, that Profile must be attached to the parallel port (the connector farthest to the right when viewed from the front). This port is 'PARAPORT' to the as and '&3' to the Monitor. Your other hard disks are attached to the N-Port card, which must (for now) be in Slot 2 (the middle slot). Starting from the bottom of the N-Port card, the ports are named '&4', '&5', and '&6' by the monitor, and 'SLOT2CHANl', 'SLOT2CHAN2', and 'SLOT2CHAN3' by the as. The monit…