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============= .'=:: OWNER'S MANUAL Model 2422 -B Floppy Disk (;ontroller ===='===========:=== 1'-5 California Computer Syste~s=-. . . .-. .,__ "__, __ _ MODEL 2422 MULTIMODE FLOPPY DISK CONTROLLER REFERENCE MANUAL 89000-02422 Rev B Copyright 1981 California Computer Systems 250 Caribbean Drive Sunnyvale, CA 94086 Copyright 1980 by California Computer Systems All rights reserved. No part of this publication may be reproduced in any form or by any means without express permission of California Computer Systems. The information contained in this manual is believed to be correct at the time of publication. However, CCS assumes no liability resulting from the use of this manual. Z-80 is a registered trademark of Zilog, Inc. CP/M is a registered trademark of Digital Research, Inc. Publication History: Revision A printed in August 1980 Revision B printed in May 1981 TABLE OF CONTENTS 1 . ~I INTRODUCTION 1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 The 2422 and System Compatibility . . . . . . . . . . . . . . 1-2 1.3 Drive Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1.4 Diskette Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 2.0 USER OPTIONS 2.1 Auto Boot O,ption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.2 PerSci Drive Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.3 Options for System/Software Compatibility . . . . . . 2-5 3.~' INSTALLATION AND OPERATION 3.1 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 Drive Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3.4 Operation 3-8 4." THE 2422 ROM:-RESIDENT FIRMWARE 4.1 Cold-start Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4.2 Page 0 RAM Used by Firmware . . . . . . . . . . . . . . . . . . . . 4-2 4.3 The Firmware Disk Routines . . . . . . . . . . . . . . . . . . . . . 4-2 4.4 The Monitor's I/O Routines . . . . . . . . . . . . . . . . . . . . . 4-4 4.5 The Bootstrap Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 4.6 The Monitor' . . . . . . . . . . . .