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Manuals
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SD System Manuals
Controller
VFW-III
Operation manual
SD System VFW-III Operation Manual
Versafloppy winchester disk controller
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Contents
Table of Contents
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Table of Contents
Table of Contents
Subsection
Title no
Sectioni
1 General
Features
Introduction
Scope
Computer Bus
2 General
Theory of Operation
Winchester Disk Drives
Floppy Disk Drives
Vfw-III Disk Controller
Zone 7: Floppy Disk Interface
Error Register (Read Only)
3 General
Memory Map
Sector Buffer (Read/Write and Increment)
Sof'iware Drivers
Command Aborted
Data Address Mark
Not Found
Status Register Bit 6: Ready
Bad Block Detect
Identification Field Not Found
Status Register Bit 4: Seek
Uncorrectable Error
Write Precompensation Cylinder (Write Only)
Cylinder High (Read/Write)
Cylinder Low (Read/Write)
Sector Count (Read/Write)
Sector Number (Read/Write)
Size/Device/Head Register (Read/Write)
Data Transfer Requested (Bit 3)
Drive Ready (Bit 6)
Ecc Correction Made (Bit 2)
Error Encountered (Bit 0)
Seek Complete (Bit 4)
Vfw- III Busy (Bit 7)
Write Fault (Bit 5)
8" Full Size Floppy Select (Bit 0)
Command Register (Write Only)
Tma Extended Significant Byte (Write Only)
Tma Least Significant Byte (Write Only)
Vfw-III Control Port (Write Only)
Extended Head Selection (Bit 1)
Motor-On Mode (Bit 3)
Single Density Select {Bit 2)
Temporary Master Access Direction (Bit 4)
Temporary Master Access Enable {Bit 5)
Vfw-III Command
Type 1 Commands
Diagnostic Test Command
Read Command
Seek Command
Type 2 Commands
Format Command
Readlong Command
Type 3 Commands
Writelong Command
Cables
Floppy Disk Drives
4 General
Installation
Power and Cooling
Test Connector
Jumpers
Jumpers and Switches
Switches
Calibration
Floppy Disk Controller Calibration
Test Mode for the Vfw-III
Floppy Disk Read Pulse Width
Floppy Disk Write Precompensation
Floppy Voltage Controlled Oscillator Center Frequency
Winchester Voltage Controlled Oscillator
Non-Ieee-696 Busses
Pin Assignments
Data Transfer Modes
Sectionv
Environment
5 General
Power Requirements
Specifications
Aselected Ieee-696 Specification Sheets
Bdisclaimer
Limited Warranty
Ewinchester Interface
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)
VFW-I I I
JERSAFLOPPY WINCHESTER DISK CONTROLLER
OPERATIONS MANUAL
SD
#7140174
REVISION
A
SEPTEMBER
21,
1983
.
•
P.O. Box 28810, Dallas, Texas 75228
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