compupro A290 Disk 1A Technical Manual Nov84 free download

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DISK 1AM TECHNICAL MANUAL A290 $20.00 DISK 1A Technical Manual HIGH PERFORMANCE FLOPPY DISK CONTROLLER FOR 8" AND 5.25" DRIVES DISK IA TECHNICAL MANUAL Copyrigh t 1984 CompuPro Hayward, CA 94545 First Edition: July, 1984 Second Edition: November, 1984 Document No: 12036 Filename: DISKIA.MAN Board No: 203 Rev: D EPROM: Version 1.4 Part # 290 DISCLAIMER - CompuPro makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Further, CompuPro reserves the right to revise this. publication and to make any changes from time to time in the content hereof without obligation of CompuPro to notify any person of such revision or changes. Trademark: MP /M; Digital Research, Inc. Registered trademarks: CP/M, CP /M-86; Digital Research, Inc. Compound trademarks: CP/M 8-16, Concurrent DOS 8-16; Digital Research, Inc and CompuPro. All rights reserved. No part of this publication may be reproduced or transmitted in any form, or by any means, without the written permission of CompuPro. Printed and assembled in the United Sta tes of America. CONTENTS HOW TO GET YOUR DISK lA UP AND RUNNING WITHOUT READING THE MANUAL... 1 Drive Interface - 8" Drives ... 6 Drive Interface - 5.25" Drives ... 6 Boot the Controller ... 7 HARDWARE SECTION ... 8 Disk Interface Port Map ... 8 CompuPro Drive Interface Address ... 10 Port Addressing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10 In terrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10 Boot EPROM. . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11 Boot EPROM Routine Addressing ... 11 Boot Routine Description ... 12 Wait State Enable ... 13 Boot Enable/Inhibit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13 Arbiter and Priority Selection ... 13 Motor Control Enable ... 14 Disk lA Connector Pinout with 8" and 5.25" Drives ... 14 Programming Considerations for using Minifloppy Drives . . . . 15 Specifications for 8" Floppy Disk Drives ... 16 Specifications for 5.25" Minifloppy Disk Drives ... ,.. 16 THEORY OF OPERATION ... 17 Bus Interf