Overview
1.2 FEATURES
The MD21 Controller features are summarized below. More details on
these features are given in subsequent sections.
•
Industry standard 5.25-inch form factor and mounting
•
Operates from 5 volt source
•
32K byte by 9-bit on-board dynamic RAM
•
8031 microprocessor operating at 12.0 mHz
•
Power Fail Detect input
•
User Panel Interface which supports:
-- Write protect switches
— Write protect indicators
— Ready indicators
•
Write protect from the drive
•
Support of one or two ESDI Disk Drives
•
Provides a transfer rate up to fifteen megabits/sec at the
ESDI interface
•
Supports physical sector sizes of 256 and 512 bytes
•
Supports hard or soft sectoring
•
Provides defect skipping, using slip sectoring
•
Sequenced drive start up
•
Supports embedded servo drives
•
Auto configuration during power-up
•
Defect management including manufacturer's defect list
•
Overlapped Seeks
•
Will not destroy manufacturer's defect list
•
Provides transfer rate of up to 1.25 Mbytes/sec at the SCSI
interface
1-2 Introduction
Summary of Contents for MD21/S2
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