Performance Computer PT-VME161 User manual

Document Number 126A0190
315 Science Parkway
Performance
A Performance Technologies Company
Rochester, New York USA 14620
Computer
USER’S MANUAL
PT-VME161
Extensible Single Board Computer/Controller

When reviewing this document please note any issues that you may have with the document (errors,
points of confusion, grammar or spelling mistakes, etc.) and contact Technical Publications at (716) 256-
0200 or pccsuppor[email protected]. All comments, suggestions, and criticisms are welcome.
Copyright Notice
© 1993-1994 by Performance Computer, a Performance Technologies Company. -- Printed in USA.
315 Science Parkway, Rochester, New York 14620
Trademarks
Microware and OS-9 are trademarks of Microware Systems Corporation.
PTbug is a trademark of Performance Computer.
All other brands or names are trademarks of their respective holders.
All rights reserved. This document is the sole property of Performance Computer.
Rev ECN Pages Affected Date Approvals
10 - All 09/20/94
REVISION CONTROL

NOTICE
This document presents information for users of the Performance Computer Models PT-VME161 Exten-
sible Single Board Computer/Controller.
Although the information contained within this document is considered accurate and characteristic of the
subject product, Performance Computer reserves the right to make changes to this document and any prod-
ucts described herein to improve reliability, function, or design. Performance Computer does not assume
any liability arising out of the application or use of any product or circuit described herein.
No part of this document may be copied or reproduced in any form or by any means without the prior
permission of Performance Computer.
WARNING
THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY
AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL,
MAY CAUSE INTERFERENCE TO RADIO COMMUNICATIONS. AS TEMPORARILY
PERMITTED BY REGULATION, IT HAS NOT BEEN TESTED FOR COMPLIANCE WITH THE
LIMITS FOR CLASS A COMPUTING DEVICES PURSUANT TO SUBPART J OF PART 15 OF FCC
RULES, WHICH ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST SUCH
INTERFERENCE. OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO
CAUSE INTERFERENCE, IN WHICH CASE THE USER, AT HIS OWN EXPENSE, WILL BE
REQUIRED TO TAKE WHATEVER MEASURES MAY BE REQUIRED TO CORRECT THE INTER-
FERENCE.

Safety Information
This section is provided as a summary of the safety recommendations throughout this manual. Perfor-
mance Computer (PCC) recommends that all safety precautions are followed to prevent harm to yourself
or the equipment. Please follow all warnings marked on the equipment.
Safety Precautions
• Follow all warnings and instructions marked on the equipment.
• Ensure that the voltage and frequency of your power source matches the voltage and frequency
inscribed on the equipments electrical rating label.
• Never push objects of any kind through the openings in the equipment. Dangerous voltages may be
present. Conductive foreign objects could produce a short circuit that could cause fire, electrical
shock, or damage your equipment.
Symbols
The following symbols appear in this document.
CAUTION: There is risk of personal injury or equipment damage. Follow the instructions.
WARNING: Hazardous voltages are present. To reduce the risk of electric shock and danger to personal
heath, follow the instructions.
!

Table of Contents
Performance Computer
Extensible Single Board Computer/Controller User’s Manual v
Section 1 PT-VME161 INTRODUCTION.............................................. 1
Scope............................................................................................................................. 1
Applicable Documents............................................................................................. 2
Model Designations.................................................................................................. 3
Features ........................................................................................................................ 4
Family Members......................................................................................................... 6
PT-VME131/131E........................................................................................................ 6
PT-VME141/141E........................................................................................................ 7
PT-VME151A/151AE................................................................................................... 7
Glossary and Conventions..................................................................................... 8
Glossary ...................................................................................................................... 8
Conventions................................................................................................................. 9
Section 2 GETTING STARTED.................................................................. 11
Unpacking and Inspection..................................................................................... 11
Hardware Configuration......................................................................................... 12
Device Positions......................................................................................................... 12
U24 PROM/ROM/SRAM/EEPROM Socket Configuration ......................................... 14
Location U24 Setup............................................................................................... 15
Location U36 Setup............................................................................................... 15
SCSI Termination....................................................................................................... 17
Disabling Termination ........................................................................................... 17
Termination Power Source.................................................................................... 17
TERMPWR Overview...................................................................................... 17
DRAM Module Upgrading........................................................................................... 19
EPAK Installation........................................................................................................ 20
Board Installation ..................................................................................................... 21
Power Considerations ................................................................................................ 21
Slot Considerations .................................................................................................... 21
Backplane Insertion.................................................................................................... 21
SCSI Considerations ............................................................................................... 23
Cabling ....................................................................................................................... 23
Example................................................................................................................ 23
Mechanical restraints............................................................................................ 24

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vi Extensible Single Board Computer/Controller User’s Manual
SCSI device grounds ............................................................................................ 24
Device addresses....................................................................................................... 25
Serial Port Cabling ................................................................................................... 25
Example...................................................................................................................... 25
Mechanical restraints.................................................................................................. 26
Section 3 FUNCTIONAL DESCRIPTION........................................... 27
Microprocessor ......................................................................................................... 28
Memory......................................................................................................................... 28
DRAM......................................................................................................................... 28
DRAM Mapping..................................................................................................... 29
Sizing .................................................................................................................... 29
Parity ..........................................................................................................................30
Checking............................................................................................................... 30
Initialization ........................................................................................................... 31
Testing .................................................................................................................. 31
PROM/SRAM Sockets................................................................................................ 31
Nonvolatile SRAM and Time of Day/Calendar Clock ................................................. 31
Serial EEPROM.......................................................................................................... 31
Interval Timer ............................................................................................................. 32
VMEbus Interface...................................................................................................... 33
SCV64........................................................................................................................ 33
VME
64
Transfers.................................................................................................. 33
Transfer Modes..................................................................................................... 33
Decoupled........................................................................................................ 33
Atomic.............................................................................................................. 34
VMEbus Control Logic .......................................................................................... 34
VMEbus Slave Accesses...................................................................................... 35
SCV64 register access from the VMEbus ....................................................... 35
EPAK access from the VMEbus...................................................................... 35
VMEbus Master Accesses.................................................................................... 35
68060 Accesses .............................................................................................. 35
Read-Modify-Write........................................................................................... 36
DMAC.................................................................................................................... 36
Location Monitor.................................................................................................... 37
Registers............................................................................................................... 37
Test and Diagnostics............................................................................................. 37
Reset..................................................................................................................... 38
Local Bus Timer.................................................................................................... 38
Watchdog Timer.................................................................................................... 38
Tick Timer ............................................................................................................. 38
Register Block....................................................................................................... 39
Interrupt Handler................................................................................................... 39

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Extensible Single Board Computer/Controller User’s Manual vii
Local Level 7 Sources ..................................................................................... 39
Abort........................................................................................................... 39
SCSI Bus Reset ......................................................................................... 40
AC Fail........................................................................................................ 40
System Fail................................................................................................. 40
General Purpose Local Interrupts.................................................................... 40
Location Monitor FIFO................................................................................ 40
SCV64 VME Event..................................................................................... 41
Timer Event................................................................................................ 41
Tick ....................................................................................................... 41
Interval.................................................................................................. 42
I/O Event .................................................................................................... 42
FAS216 Requests................................................................................. 42
EPAK Requests (-EPIRQ) .................................................................... 42
EPAK Vectored Interrupt Request.............................................................. 42
DUART Interrupt Request (-INTP<5>)....................................................... 43
VMEbus Interrupts........................................................................................... 43
Interrupt Acknowledgment............................................................................... 43
VMEbus Requester.......................................................................................... 44
System Monitor Functions............................................................................... 44
Reset.......................................................................................................... 44
System Clock Driver................................................................................... 44
VMEbus Arbiter.......................................................................................... 44
IACK Daisy Chain Driver............................................................................ 45
Bus Timer................................................................................................... 45
I/O UTILITIES .............................................................................................................. 45
System Control Registers........................................................................................... 45
System Control Register 1.................................................................................... 45
VMEbus Page Select....................................................................................... 45
User LEDs ....................................................................................................... 46
SCSI DMA Read/Write Direction..................................................................... 46
EPAK Space Cache Enable ............................................................................ 46
VMEbus Space Cache Enable ........................................................................ 46
System Control Register 2.................................................................................... 46
Enable EPAK Access from the VMEbus.......................................................... 47
Enable Parity Error Checking .......................................................................... 47
Enable Bad Parity............................................................................................ 47
Enable Interval Timer Interrupts ...................................................................... 48
Enable Tick Timer Interrupts............................................................................ 48
Enable Bus Snooping...................................................................................... 48
System Status Registers............................................................................................ 49
System Status Register 1...................................................................................... 49
Hex Switch....................................................................................................... 49
System Status Register 2...................................................................................... 49
68060 Parity Error............................................................................................ 49

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viii Extensible Single Board Computer/Controller User’s Manual
SCSI DMA Parity Error.................................................................................... 49
DARF Parity Error............................................................................................ 49
EPAK Parity Error............................................................................................ 50
SCSI Present................................................................................................... 50
System Status Register 3...................................................................................... 50
DRAM Size...................................................................................................... 50
Parity Installed................................................................................................. 50
Interval Timer Interrupt Pending...................................................................... 50
DUART....................................................................................................................... 51
Utility Serial Ports.................................................................................................. 51
General Purpose Timer/Counter........................................................................... 51
Parallel Input Port.................................................................................................. 51
Clear-to-Send .................................................................................................. 51
Data-Terminal-Ready ...................................................................................... 51
EPAK General Purpose Input.......................................................................... 52
Serial EEPROM Data In .................................................................................. 52
Parallel Output Port............................................................................................... 52
Request-to-Send.............................................................................................. 52
Data-Set-Ready............................................................................................... 52
EPAK General Purpose Output....................................................................... 52
Serial EEPROM Select.................................................................................... 52
Serial EEPROM Control .................................................................................. 52
Serial EEPROM Data Out................................................................................ 53
SCSI Controller.......................................................................................................... 54
SCSI Bus.................................................................................................................... 54
Register Access.......................................................................................................... 54
DMA Mechanism........................................................................................................ 55
Interrupts .................................................................................................................... 55
Termination................................................................................................................. 55
EPAK Interface........................................................................................................... 57
Section 4 FUNCTIONAL SUMMARY.................................................... 59
Memory Map ............................................................................................................... 59
Default VMEbus Slave Addressing............................................................................. 60
161 System Registers.............................................................................................. 61
System Control Register 1.......................................................................................... 61
System Control Register 2.......................................................................................... 63
System Status Register 1........................................................................................... 64
System Status Register 2........................................................................................... 65
System Status Register 3........................................................................................... 66
SCSI Memory Address Register................................................................................. 67
Jumper List (Defaults)............................................................................................. 67

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Extensible Single Board Computer/Controller User’s Manual ix
Interrupt Control........................................................................................................ 68
Register Maps............................................................................................................ 69
SCV64........................................................................................................................ 69
DS1643 Nonvolatile Timekeeping RAM..................................................................... 71
82C54 Interval Timer.................................................................................................. 71
EMULEX FAS216 SCSI Controller............................................................................. 72
68681 DUART............................................................................................................ 72
Controls and Indicators.......................................................................................... 73
Rotary Switch ............................................................................................................. 73
“RUN” Indicator........................................................................................................... 74
“FAULT” Indicator....................................................................................................... 74
“VME” Indicator........................................................................................................... 74
RESET Switch............................................................................................................ 74
ABORT Switch............................................................................................................ 74
User Programmable LEDs.......................................................................................... 74
Section 5 CONNECTOR PINOUTS......................................................... 75
Utility Serial Port Pin Assignments.................................................................... 75
VMEbus Pin Assignments..................................................................................... 76
EPAK Connectors..................................................................................................... 78
DRAM Module ............................................................................................................ 79
Section 6 MECHANICAL AND ENVIRONMENTAL................... 81
Power Requirements............................................................................................... 81
Ambient Temperature.............................................................................................. 81
Humidity....................................................................................................................... 81
Vibration....................................................................................................................... 81
Mechanical Shock..................................................................................................... 82
Physical Dimensions............................................................................................... 82
Section 7 APPENDICES.................................................................................. 83
Product Warranty 83
Product Return Procedure .................................................................................... 84
Product Support........................................................................................................ 85
Installation Notes...................................................................................................... 86
EEPROM Usage......................................................................................................... 87
PTbug......................................................................................................................... 87
OS-9........................................................................................................................... 88

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x Extensible Single Board Computer/Controller User’s Manual
The differences between the PT-VME161 and the VME151....................... 90
SCV64........................................................................................................................ 90
Differences:........................................................................................................... 90
68060 Versus 68040 .................................................................................................. 91
The differences between the PT-VME151A and the VME151.................... 92
Renamed Registers.................................................................................................... 92
New Devices............................................................................................................... 92
DRAM Sizing.............................................................................................................. 92
SRAM Access............................................................................................................. 93
PT-VME151A Differences From VME131/141................................................. 94
DARF64 uses 68040 mode........................................................................................ 94
SCSI Controller differences........................................................................................ 94
Effects of 68040 vs. 68030......................................................................................... 94
Cacheability and Serialization............................................................................... 94
68040 Cache Control Registers............................................................................ 95
68040 Cache Clearing .......................................................................................... 96
68040 Exception Processing................................................................................. 96
PT-VME151A Control Register Differences ............................................................... 96
SCV64 Overview........................................................................................................ 98
Functional Description................................................................................................ 98
BI-mode................................................................................................................. 98
Location Monitor.................................................................................................... 99
VMEbus Master Memory Map............................................................................... 99
Master VMEbus Accesses................................................................................... 101
Slave VMEbus Accesses..................................................................................... 102
AVICS Application Notes...................................................................................... 104
Local Interrupts.......................................................................................................... 104
Example:.............................................................................................................. 104
Setting Up the Master Bus Memory Map................................................................... 105
Example:.............................................................................................................. 105
Setting Up A24/A32 Slave Images on the Bus.......................................................... 105
Example A:........................................................................................................... 106
Example B:........................................................................................................... 107
Generating VMEbus Interrupts.................................................................................. 108
Example:.............................................................................................................. 108
Receiving VMEbus Interrupts.................................................................................... 108
Example:.............................................................................................................. 108
Initiating a DMA Transfer........................................................................................... 109
Example:.............................................................................................................. 109
VMEbus Address Modifiers.................................................................................. 111
Section 8 SCHEMATICS................................................................................ 123

List of Figures
Performance Computer
Extensible Single Board Computer/Controller User’s Manual xi
Figure 1: PT-VME161 Device Positions................................................................................ 12
Figure 2: EPROM/ROM/SRAM/EEPROM Device Orientation.............................................. 14
Figure 3: K4 and K10Jumpers............................................................................................... 15
Figure 4: K3 and K11 Jumpers.............................................................................................. 15
Figure 5: U24 and U36 Jumper Settings............................................................................... 16
Figure 6: SCSI Components................................................................................................. 17
Figure 7: PT-VME161 Front Panel........................................................................................ 22
Figure 8: Example SCSI Cable ............................................................................................. 24
Figure 9: Example Serial port Cable ..................................................................................... 26
Figure 10: Block Diagram...................................................................................................... 27
Figure 11: Interval Timer Block Diagram............................................................................... 32
Figure 12: Timer Block Diagram............................................................................................ 41
Figure 13: PT-VME161 Front Panel Controls and Indicators................................................ 73
Figure 14: SCV64 Memory Map........................................................................................... 100

List of Figures
xii Extensible Single Board Computer/Controller User’s Manual

List of Tables
Performance Computer
Extensible Single Board Computer/Controller User’s Manual xiii
Table 1: EPAK Caching Options........................................................................................... 46
Table 2: Memory Map ........................................................................................................... 59
Table 3: Default VMEbus A24 Memory Map......................................................................... 60
Table 4: Default VMEbus A32 Memory Map......................................................................... 60
Table 5: Interrupt Request Summary.................................................................................... 68
Table 6: SCV64 Register Map............................................................................................... 69
Table 7: DS1643 Nonvolatile Timekeeping RAM Registers.................................................. 71
Table 8: 82C54 Interval Timer Registers............................................................................... 71
Table 9: EMULEX FAS216 SCSI Controller Register Map................................................... 72
Table 10: Motorola 68681 DUART Register Map.................................................................. 72
Table 11: Utility Serial Port Pin Assignments........................................................................ 75
Table 12: VMEbus “P1” Connections.................................................................................... 76
Table 13: VMEbus” P2” Connections.................................................................................... 77
Table 14: EPAK Connections................................................................................................ 78
Table 15: EPAK mounting standoffs ..................................................................................... 79
Table 16: DRAM Module Connections.................................................................................. 79
Table 17: EPAK mounting standoffs ..................................................................................... 80
Table 18: Power Requirements............................................................................................. 81
Table 19: Ambient Temperature............................................................................................ 81
Table 20: Humidity Constraints............................................................................................. 81
Table 21: Physical Dimensions............................................................................................. 82
Table 22: EEPROM Default Values...................................................................................... 88
Table 23: 151 to 161 Register Map DIfferences.................................................................... 92
Table 24: EPAK Caching....................................................................................................... 96
Table 25: Recommended Interrupt Assignments................................................................. 104
Table 26: VMEbus Address Modifiers.................................................................................. 111

List of Tables
xiv Extensible Single Board Computer/Controller User’s Manual

Section
Extensible Single Board Computer/Controller User’s Manual 1
1
PT-VME161 INTRODUCTION
Scope
This document provides information for users of the Model PT-VME161 and PT-VME161E Extensible
Single Board Computer/Controllers.
This manual is not intended as a stand-alone document. If you plan on writing software for the board or
developing an Expansion Module the references cited below in the Applicable Documents section are
necessary.
This manual does provide the information necessary to understand the operation and features of the
board. A prime objective was to answer those questions raised by system developers as to whether the
PT-VME161 will complement their architecture. When combined with the supporting documentation
listed below, a complete description of PT-VME161 facilities are presented.
Section 1 Provides an introduction and general overview of the PT-VME161. It is intended as a quick
summary of PT-VME161 features and provides a framework for the rest of the docu-
ment.
Section 2 (Getting Started) describes the physical setup and installation procedures.
Section 3 The Functional Description provides a detailed description of PT-VME161 architecture and
functional blocks.
Section 4 Summarizes the PT-VME161 memory map, registers, controls, indicators, etc.
Section 5 (Connector Pinouts) summarizes the PT-VME161 external connections.
Section 6 Describes mechanical and environmental characteristics of the PT-VME161.
Section 7 Appendices.
Section 8 Index.
Section 9 Schematics.

Section 1PT-VME161 INTRODUCTION
2 Extensible Single Board Computer/Controller User’s Manual
Applicable Documents
a. VMEbus Specification Manual, Revision ANSI/IEEE STD 1014-1987, VMEbus International
Trade Association (VITA). VITA; 10229 N. Scottsdale Road, Suite B; Scottsdale, AZ 85253.
b. M68000 Family Programmer’s Reference Manual; M68000PM/AD; Motorola Incorporated, 1989.
Motorola Literature Distribution; P.O. Box 20912; Phoenix, AZ 85036.
c. MC68060, MC68EC060, MC68LC060 Microprocessor User’s Manual; M68060UM/AD; Motorola
Incorporated, 1994. Motorola Literature Distribution; P.O. Box 20912; Phoenix, AZ 85036.
d. MC68681 Multi-Function Peripheral Specification (DUART); September, 1985. Motorola Semi-
conductor Products Incorporated; 3501 Ed Bluestein Boulevard; Austin, TX 78721.
e. PT-VME131/141/151 Expansion Module Design Guide; Document Number 126A0075, Perfor-
mance Technologies, Incorporated.
f. 93C46 Data Sheet; Catalyst Semiconductor, Inc. or International CMOS Technology, Inc.
g. FAS216/226/236 Technical Manual; VLSI51007-00 Rev A, January 4,1991. Emulex Micro
Devices; 3545 Harbor Boulevard; Costa Mesa, CA 92626.
h. Intel Peripherals Handbook; Literature Order Number 296467. Intel Corporation, Literature Sales;
P.O. Box 7641; Mt. Prospect, IL 60056-7641.
i. Openbus Interface Components - SCV64 User Manual; Issue 1; Document: 891078.MD301.01.
Newbridge Microsystems; 603 March Road; Kanata, Ontario, Canada K2K 2M5.
j. Dallas Semiconductor, 1992-1993 Product Data Book. DS1643 Nonvolatile Timekeeping RAM.
Dallas Semiconductor; 4401 South Beltwood Parkway; Dallas, Texas 75244-3292.
k. American National Standard for Information System - Small Computer System Interface (SCSI),
ANSI X3.131-1986. American National Standard for Institute, Inc.; 1430 Broadway; New York,
New York 10018.
Information regarding EPAKs is provided in a separate User’s Manual for the specific EPAK.

Performance Computer
Extensible Single Board Computer/Controller User’s Manual 3
Model Designations
The PT-VME161 is available with a 50 MHz 68060 microprocessor or a 50 MHz 68EC060 (68060
without MMU or FPU). Additionally, the PT-VME161 has options of 4, 8, 16, 32 or 64 megabytes of
main memory. Model designations are as follows:
Model PT-VME161-10491 68060-50MHz, 4 Mbyte
Model PT-VME161-10492 68060-50MHz, 8 Mbyte
Model PT-VME161-10493 68060-50MHz, 16 Mbyte
Model PT-VME161-10494 68060-50MHz, 32 Mbyte
Model PT-VME161-10495 68060-50MHz, 64 Mbyte
Model PT-VME161E-10496 68EC060-50MHz, 4 Mbyte
Model PT-VME161E-10497 68EC060-50MHz, 8 Mbyte
Model PT-VME161E-10498 68EC060-50MHz, 16 Mbyte
Model PT-VME161E-10499 68EC060-50MHz, 32 Mbyte
Model PT-VME161E-10500 68EC060-50MHz, 64 Mbyte

Section 1PT-VME161 INTRODUCTION
4 Extensible Single Board Computer/Controller User’s Manual
Features
• MC68060 Thirty-Two Bit Microprocessor With Internal Cache and FPU
PT-VME161 utilizes 50 MHz MC68060 MPU w/Memory Management Unit
PT-VME161E utilizes 50 MHz MC68EC060 MPU w/o MMU or FPU
MC68040-Compatible Integer Execution Unit
MC68881/MC68882-Compatible Floating Point Unit
Independent Instruction and Data Memory Management Units
8KByte Physical Instruction Cache and 8KByte Physical Data Cache Accessible Simultaneously
Low Latency Bus Accesses for Reduced Cache-Miss Penalty
Concurrent Integer Unit, FPU, MMU, and Bus Controller Operation Maximizes Throughput
User Object-Code Compatibility with all Earlier M68000 Microprocessors
• 4, 8, 16, 32 or 64 Megabytes of Shared DRAM
4 Clock Local Access
68060 Cache Burst Read Mode (4-2-2-2 Clock Timing)
• Parity Checking
For 16, 32 or 64 Megabyte configurations
• Two 32 Pin JEDEC Sockets (Bytewide Port)
Both sockets support ROM, PROM, EPROM, and Flash EPROM devices
One socket is additionally capable of supporting SRAM and RTC devices
• Flexible EPAK Interface Extension Capability
Supports Slave, DMA, and Buffered DMA I/O Functions
Options for Ethernet, High Speed SYNC SIO, High Density ASYNC SIO, etc.
Front Panel Interconnect
•VME64™ VMEbus Interface Features
SCV64 ASIC
Full VMEbus System Controller w/Auto-Program Option
VMEbus Requester, Interrupter, and Interrupt Handler
Tick and Watchdog Timers, General Purpose Clocks
60 MByte per second D64MBLT (VME64) Data Transfer Rate
VMEbus A64/A32/A24/A16 Address Interface
VMEbus D64MBLT/D32BLT/D16BLT/D32/D16/D8(EO), UAT, RMW Data Interface
Location Monitor w/Message FIFO
Programmable Slave Address Mapping And Protection
Integral A32:D32 Local DMA Controller w/Burst Capabilities
Programmable Burst Sizes on Local Bus DMA Operations
• Fast SCSI-2 Single Ended Interface Based Upon EMULEX FAS216
Supports ANSI X3.131-1986 and X3T9.2/86-109 Rev. 10c Standards
10 MByte per second SCSI Data Transfer Rate
Active SCSI bus termination
DMA Support To Local DRAM
P2 SCSI Interconnect
• 82C54 CHMOS Programmable Interval Timer
Three independent 16-bit counters
Provides Interrupt

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Extensible Single Board Computer/Controller User’s Manual 5
• General Purpose Local I/O
68681 DUART
Dual RS-232 ASYNC Serial I/O ports w/Front Panel Interconnect
16-bit General Purpose Timer
128 Byte EEPROM
• DS1643 Nonvolatile Timekeeping RAM
8184 Bytes of Nonvolatile SRAM
Real-Time Clock with Integrated Crystal
Power Fail Control Circuit
Lithium Energy Source
• Front Panel User Interface Features
Reset and Abort Switches
General Purpose Hexadecimal Switch
68060 (RUN) and VMEbus (VME) Activity LED indicators
User Programmable FAULT LED
Four User Programmable LEDs
• Software Support
PTbug Debugger/Monitor
OS-9 Real-Time Operating System
VxWorks Real-Time Operating System

Section 1PT-VME161 INTRODUCTION
6 Extensible Single Board Computer/Controller User’s Manual
Family Members
The PT-VME161 and PT-VME161E are members of a family of PTI Extensible Single Board Computer/
Controllers. They each represent a highly integrated M68000-compatible MPU based VMEbus platform
designed to offer the user significant flexibility in meeting specific architectural requirements.
The base modules support all standard VMEbus data and operating modes including the newly defined
VME64 mode pioneered by Performance Technologies. Operating in VME64 mode the PT-VME161
can burst data over the VMEbus at rates up to 60 MBytes per second. This high speed transfer capability
makes the 161 ideal for applications that require maximum VMEbus utilization. The base modules
provide many I/O features tightly coupled to the MPU. These features include five DRAM capacities
from four to sixty-four megabytes, a Fast SCSI-2 interface with DMA support for direct flexible/hard
disk interconnect, and dual serial I/O ports for asynchronous communication connectivity.
In addition to the standard base module features, the PTI specs provide an option for even further
extending their single VMEbus slot functionality through its “EPAK” extension interface. This interface
provides for the addition of a plug-in daughterboard (EPAK) with selectable functionality to meet
current or future I/O needs. Performance Technologies offers “off-the-shelf” EPAKs which support
Ethernet, high speed synchronous communications, additional asynchronous serial I/O, etc. If these
EPAKs do not match the requirements, the user also has the option for a custom design based upon an
available wire wrap prototyping EPAK and supplied interface documentation. Contact Performance
Technologies for custom EPAK design quotations.
A key design criterion was to maintain user software compatibility across the family members. The
command and register set of the EMULEX SCSI controller on the PT-VME161, PT-VME151 and PT-
VME141 is a super set of the PT-VME131’s NCR SCSI controller. The MC68060 of the PT-VME161
is user code compatible with the MC68030 of the PT-VME131, PT-VME141 and PT-VME151. These
and other design considerations were made to preserve your investment in code development. See “PT-
VME151A Differences From VME131/141” on page 94 for a discussion of the system level differences.
PT-VME131/131E
The features of the PT-VME131 and PT-VME131E are identical to the PT-VME161 with the following
exceptions:
• Advanced Thirty-Two Bit Microprocessor With Internal Cache
PT-VME131 utilizes 25 MHz 68030 MPU w/MMU
PT-VME131E utilizes 25 MHz 68EC030 MPU w/o MMU
• 1, 2, 4, or 8 Megabytes of Shared DRAM
• Data/Address Register File (DARF32) ASIC (not VME64)
VMEbus Master/Slave A32/A24/A16:D32/D16/D8(EO) Interface
Location Monitor with Message FIFO
Programmable Slave Address Mapping and Protection
Integral A32:D32 Local Bus to the VMEbus DMA Controller
• SCSI-I Single Ended Interface
NCR 53C94 Based
16 Bit DMA support to local DRAM
P2 SCSI Interconnect
• No 82C54 CHMOS Programmable Interval Timer