Xycom XVME-653 User manual

XVME-653/658
Single-Slot VMEbus
Intel Pentium®/AMD-K6®-2
Processor Module
P/N 74653-001B


1999 XYCOM™ AUTOMATION, INC. Printed in the United States of America

XVME-653/658 Manual
ii
Revision Description Date
A Manual Released 2/98
B Revision 6/99
Trademark Information
Brand or product names are trademarks or registered trademarks of their respective owners.
Pentium is a registered trademark and MMX is a trademark of Intel Corporation.
Windows and Windows NT are registered trademarks of Microsoft Corp. in the US and in other
countries.
Copyright Information
This document is copyrighted by Xycom Automation, Incorporated (Xycom Automation) and
shall not be reproduced or copied without expressed written authorization from Xycom
Automation.
The information contained within this document is subject to change without notice. Xycom
Automation does not guarantee the accuracy of the information.
Xycom Automation, Inc.
750 North Maple Road
Saline, MI 48176–1292
734-429-4971 (phone)
734-429-1010 (fax)

iii
WARNING
This is a Class A product. In a domestic environment this product may cause radio in-
terference, in which case the user may be required to take adequate measures.
European Union Directive 89/336/EEC requires that this apparatus comply with relevant
ITE EMC standards. EMC compliance demands that this apparatus is installed within a
VME enclosure designed to contain electromagnetic radiation and which will provide
protection for the apparatus with regard to electromagnetic immunity. This enclosure
must be fully shielded. An example of such an enclosure is a Schroff 7U EMC-RFI VME
System chassis, which includes a front cover to complete the enclosure.
The connection of non-shielded equipment interface cables to this equipment will
invalidate European Economic Area (EEA) EMC compliance and may result in
electromagnetic interference and/or susceptibility levels that are in violation of
regulations which apply to the legal operation of this device. It is the responsibility of the
system integrator and/or user to apply the following directions, as well as those in the
user manual, which relate to installation and configuration:
All interface cables should be shielded, both inside and outside of the
VME enclosure. Braid/foil type shields are recommended for serial,
parallel, and SCSI interface cables. Whereas external mouse cables are
not generally shielded, an internal mouse interface cable must either be
shielded or looped (1 turn) through a ferrite bead at the enclosure point of
exit (bulkhead connector). External cable connectors must be metal with
metal backshells and provide 360-degree protection about the interface
wires. The cable shield must be terminated directly to the metal
connector shell; shield ground drain wires alone are not adequate. VME
panel mount connectors that provide interface to external cables (e.g.,
RS-232, SCSI, keyboard, mouse, etc.) must have metal housings and
provide direct connection to the metal VME chassis. Connector ground
drain wires are not adequate.

Table of Contents
v
Table of Contents
Chapter 1 – Introduction ........................................................................................... 1-1
Module Features ....................................................................................................................... 1-1
Architecture .............................................................................................................................. 1-2
CPU Chip ............................................................................................................................... 1-2
Ethernet Controller................................................................................................................. 1-2
PCI Local Bus Interface .........................................................................................................1-2
Video Controller.................................................................................................................. 1-2
Fast IDE controller and Floppy Drive Controller................................................................1-2
VMEbus Interface .................................................................................................................. 1-3
Card Expansion Options ........................................................................................................ 1-3
Onboard Memory ................................................................................................................... 1-3
DRAM Memory .................................................................................................................. 1-3
Secondary Cache .................................................................................................................1-4
Flash BIOS .......................................................................................................................... 1-4
ROM Site ............................................................................................................................... 1-4
Nonvolatile SRAM.............................................................................................................. 1-4
DiskOnChip......................................................................................................................... 1-4
Universal Serial Bus Port.......................................................................................................1-4
Serial and Parallel Ports ......................................................................................................... 1-4
Mouse Port ............................................................................................................................. 1-4
Keyboard Interface................................................................................................................. 1-5
Hard and Floppy Drives......................................................................................................... 1-5
Watchdog Timer..................................................................................................................... 1-5
Operational Description............................................................................................................ 1-6
Environmental Specifications................................................................................................... 1-7
Hardware Specifications........................................................................................................... 1-7
System Configuration and Expansion Options Tables ............................................................. 1-8
Chapter 2 – Installation............................................................................................. 2-1
Jumper Settings......................................................................................................................... 2-2
CPU Configuration................................................................................................................. 2-2
CPU Core Voltage.................................................................................................................. 2-2
CPU Voltage Plane Configuration......................................................................................... 2-2
Processor Speed ..................................................................................................................... 2-3
Memory .................................................................................................................................. 2-3
Switch Settings ......................................................................................................................... 2-4
Registers ................................................................................................................................... 2-5
Register 218h – Abort/Clear CMOS Port .............................................................................. 2-5
Register 219h – LED/BIOS Port............................................................................................ 2-5
Register 233h – Watchdog Timer Port .................................................................................. 2-6
Register 234h – NVRAM and DiskOnChip Port................................................................... 2-6
Connectors ................................................................................................................................ 2-7

XVME-653/658 Manual
vi
Serial Port Connectors ........................................................................................................... 2-7
Parallel Port Connector .......................................................................................................... 2-7
USB Port Connector............................................................................................................... 2-8
VGA Connector ..................................................................................................................... 2-8
Keyboard Port Connector....................................................................................................... 2-8
Auxiliary Connector............................................................................................................... 2-9
VMEbus Connectors ............................................................................................................ 2-10
P1 Connector ..................................................................................................................... 2-10
P2 Connector ..................................................................................................................... 2-11
Interboard Connector 1 (P4) ................................................................................................ 2-12
Interboard Connector 2 (P3) ................................................................................................ 2-13
Installing the XVME-653/658 into a Backplane .................................................................... 2-14
Enabling the PCI Ethernet Controller..................................................................................... 2-17
Loading the Ethernet Driver ................................................................................................ 2-17
Pinouts for the RJ-45 10/100 BaseT Connector .................................................................. 2-17
Using a DiskOnChip ............................................................................................................... 2-17
Chapter 3 – BIOS Setup Menus ................................................................................ 3-1
Getting to the BIOS Setup Menus ............................................................................................ 3-1
Moving through the Menus ...................................................................................................... 3-1
BIOS Main Setup Menu ........................................................................................................... 3-2
IDE Adapter 0 Master and Slave Submenus.......................................................................... 3-4
Memory Cache Submenu ....................................................................................................... 3-6
Memory Shadow Submenu .................................................................................................... 3-7
Boot Sequence Submenu........................................................................................................ 3-8
Numlock Submenu .................................................................................................................3-9
Advanced Menu...................................................................................................................... 3-10
Integrated Peripherals Submenu .......................................................................................... 3-11
32-Pin ROM Site Submenu.................................................................................................. 3-12
Advanced Chipset Control Submenu ................................................................................... 3-13
Security Menu......................................................................................................................... 3-14
VMEbus Setup Menu ............................................................................................................. 3-15
System Controller Submenu ................................................................................................ 3-16
Master Interface Submenu ................................................................................................... 3-17
Slave Interface Submenus .................................................................................................... 3-18
Exit Menu............................................................................................................................. 3-20
BIOS Compatibility ................................................................................................................ 3-21
Chapter 4 – Programming......................................................................................... 4-1
Memory Map ............................................................................................................................ 4-1
I/O Map..................................................................................................................................... 4-2
IRQ Map ................................................................................................................................... 4-3
VME Interface .......................................................................................................................... 4-3
System Resources................................................................................................................... 4-4
VMEbus Master Interface...................................................................................................... 4-4
VMEbus Slave Interface ........................................................................................................ 4-4
VMEbus Interrupt Handling .................................................................................................. 4-5
VMEbus Interrupt Generation ............................................................................................... 4-6
VMEbus Reset Options.......................................................................................................... 4-6

Table of Contents
vii
PCI BIOS Functions ................................................................................................................. 4-6
Calling Conventions............................................................................................................... 4-7
16-Bit Interface.................................................................................................................... 4-7
32-Bit Interface.................................................................................................................... 4-7
PCI BIOS Function Calls .......................................................................................................4-8
Locating the Universe Chip................................................................................................. 4-8
Read Configuration Byte..................................................................................................... 4-9
Read Configuration Word ................................................................................................... 4-9
Read Configuration Dword ............................................................................................... 4-10
Write Configuration Byte.................................................................................................. 4-10
Write Configuration Word ................................................................................................4-11
Write Configuration Dword .............................................................................................. 4-11
Software-Selectable Byte-Swapping Hardware...................................................................... 4-12
Byte-Ordering Schemes ....................................................................................................... 4-12
Numeric Consistency ........................................................................................................... 4-14
Address Consistency ............................................................................................................ 4-15
Chapter 5 – XVME-973/1 Drive Adapter Module ...................................................... 5-1
Connectors ................................................................................................................................ 5-2
P1 Connector.......................................................................................................................... 5-2
P2 Connector.......................................................................................................................... 5-3
P3 Connector.......................................................................................................................... 5-4
P4 Connector.......................................................................................................................... 5-5
P5 Connector.......................................................................................................................... 5-6
Appendix A – DRAM Installation .............................................................................. A-1
Appendix B – Drawings.............................................................................................B-1
Appendix C – Schematic...........................................................................................C-1

1-1
Chapter 1 – Introduction
The XVME-653 VMEbus Pentium® MMX™ PC-compatible VMEbus processor module
and the XVME-658 VMEbus AMD-K6®-2 PC-compatible VMEbus processor module
are designed to combine the high performance and ruggedized packaging of the VMEbus
with the broad application software base of the IBM PC standard. These modules inte-
grate the latest processor and chipset technology.
At the core of the XVME-653 is an Intel®233 MHz Pentium CPU with MMX technol-
ogy. This generation of Pentium processors features enhanced multimedia instructions,
larger level 1 caches, and a 10 to 20 percent performance increase over standard Pentium
processors.
At the core of the XVME-658 is an AMD 333 MHz K6-2 CPU with 3DNOW!™ Tech-
nology. 3DNOW!™ Technology is the first innovation to the x86 processor architecture
that significantly enhances floating-point-intensive three-dimensional (3D) graphics per-
formance. The AMD-K6-2 system can provide performance comparable to the many of
the Pentium II systems on the market today.
Module Features
The XVME-653 and the XVME-658 offer the following features:
•233 MHz Intel Pentium MMX CPU (XVME-653)
•333 MHz AMD-K6-2 CPU with 3DNOW! Technology (XVME-658)
•Up to 256 MB fast-page or EDO DRAM in 72-pin SIMM sites, with ECC or parity
•512 KB of synchronous level 2 pipeline cache
•High-performance PCI local bus SVGA controller with 2 MB of VRAM
•PCI Enhanced IDE controller with DMA
•10/100 Mbit PCI Ethernet controller with front RJ-45 connector
•32-pin site for DiskOnChip or battery-backed SRAM
•PCI-to-VMEbus interface with DMA
•Two high-speed 16550-compatible serial ports
•One Universal Serial Bus (USB) port
•EPP or ECP configurable parallel port
•PS/2-style keyboard and mouse ports
•Configurable hardware byte-swapping logic (XVME-658 and XVME-653/31x)
•Expansion options for PC/104, PMC, ISA, and PCI cards

XVME-653/658 Manual
1-2
Architecture
This section describes the XVME-653/658 processor modules’ architecture.
CPU Chip
The XVME-653 supports the Intel 233 MHz Pentium MMX processor. The MMX proc-
essor features new instructions to improve multimedia performance. A dynamic branch
prediction unit, improved internal pipelines, and separate 16 KB data and instruction
caches further enhance performance.
The XVME-658 supports the AMD 333 MHz K6-2 processor with 3DNOW! Technol-
ogy. The AMD 333 MHz K6-2 processor incorporates the MMX instruction set as well
as the new 3DNOW! Technology instruction set which can increase the speed of float-
ing-point-intensive operations and 3D graphics. In addition, a 64 KB L1 cache, four x86
instructions decoders, a large branch prediction table, and six integer-execution units
further enhance performance.
Ethernet Controller
The XVME-653/658 contains a state-of-the-art Intel 82558 10/100 BaseTX Ethernet
controller with a 32-bit PCI bus mastering interface to support 100 Mbits per second bus
transfers. The RJ-45 connector on the module’s front panel provides autosensing for
10BaseT and 100BaseTX connections.
PCI Local Bus Interface
The PCI-to-ISA bridge device provides an accelerated PCI-to-ISA interface that includes
a high-performance enhanced IDE controller, PCI and ISA master/slave interfaces, en-
hanced DMA functions, and a plug-and-play port for onboard devices. The bridge device
also provides many common I/O functions found in ISA-based PC systems, including a
seven channel DMA controller, two 82C59 interrupt controllers, an 8254 timer/counter,
and control logic for NMI generation.
Video Controller
The PCI bus video controller features a 64-bit graphics engine, with 24-bit RAMDAC
for true color support. It has 2 MB of VRAM and supports resolutions up to 1280 x 1024
with 256K colors.
Fast IDE controller and Floppy Drive Controller
The enhanced IDE controller supports programmed I/O (PIO) and bus mastering DMA
with transfer rates to 22 MB/second. The controller contains an 8 x 32 bit buffer for bus
master IDE PCI burst transfers, and will support up to two IDE devices. This controller
can also handle a single optional floppy drive device. If present, this floppy drive will be
designated Drive A.

Chapter 1 – Introduction
1-3
Caution
The IDE controller supports enhanced PIO modes, which reduce the cy-
cle times for 16-bit data transfers to the hard drive. Check with your
drive manual to see if the drive you are using supports these modes. The
higher the PIO mode, the shorter the cycle time. As the IDE cable length
increases, this reduced cycle time can lead to erratic operation. As a re-
sult, it is in your best interest to keep the IDE cable as short as possible.
The PIO modes are selected in the BIOS setup (see p. 3-4). The Auto-
config will attempt to classify the connected drive if the drive supports
the auto ID command. If you experience problems, change the Transfer
Mode: to Standard.
Caution
The total cable length must not exceed 18 inches. Also, if two drives are
connected, they must be no more than six inches apart.
VMEbus Interface
The XVME-653/658 uses the PCI local bus to interface to the VMEbus. The VMEbus
interface supports full DMA to and from the VMEbus, integral FIFOs for posted writes,
block mode transfers, and read-modify-write operations. The interface contains one
master and four slave images that can be programmed in a variety of modes to allow the
VMEbus to be mapped into the XVME-653/658 local memory. This makes it easy to
configure VMEbus resources in protected and real mode programs. The XVME-658 and
the XVME-653/31x modules also incorporate onboard hardware byte-swapping (see
Table 1-1).
Card Expansion Options
The XVME-653/658 supports optional PMC (PCI Mezzanine Card), PC/104, short ISA,
or PCI expansion using XVME-976 expansion modules. The XVME-976/201 provides
one PCI Mezzanine Card (PMC) site and one 16-bit PC/104 site. The XVME-976/202
provides one 16-bit short ISA expansion site. The XVME-976/203 provides two PMC
sites. The XVME-976/204 provides two 16-bit PC/104 sites. The XVME-976/205 pro-
vides one PCI card expansion site. All XVME-976 modules are designed to plug directly
into the XVME-653/658 using the 80-pin interboard connectors.
Onboard Memory
DRAM Memory
The XVME-653/658 has two 72-pin SIMM memory sites, providing up to 256 MB of
DRAM. The memory sites can be populated with standard fast page mode memory or
enhanced data out memory (EDO). EDO memory is designed to improve DRAM read
performance. Using EDO memory improves the back-to-back burst timing to 5-2-2-2
from the 5-3-3-3 of standard memory. The XVME-653/658 also supports error checking

XVME-653/658 Manual
1-4
and correction (ECC) or parity checking DRAM memory. Approved DRAM suppliers
are listed in Appendix A.
Secondary Cache
The XVME-653/658 comes equipped with 512 KB synchronous level 2 pipeline burst
cache.
Flash BIOS
The XVME-653/658 system BIOS is contained in a 512 KB flash device to facilitate
system BIOS updates. You can program and enable additional areas of the flash device to
provide optional ROM support. You should contact Xycom Automation for more infor-
mation on flashing option ROMs and video ROMs into the BIOS image.
ROM Site
This 32-pin onboard site supports nonvolatile SRAM and DiskOnChip.
Nonvolatile SRAM
The board supports 32K x 8 and 128K x 8 nonvolatile SRAM memory sizes. Packaged in
a standard 32-pin DIP format, the SRAM contains a built-in battery and battery backup.
Battery life is seven years minimum in absence of VCC.
DiskOnChip
The DiskOnChip is a single-chip flash disk in a standard 32-pin DIP format. It requires
an 8 KB window to view as an extension BIOS. During boot up, the DiskOnChip loads
its software in the PC memory and installs itself as an additional drive. See Table 1-2 for
DiskOnChip size options.
Universal Serial Bus Port
The XVME-653/658 incorporates a Universal Serial Bus (USB) port that is compatible
with USB devices. The port terminates in a standard two-pin connector.
Serial and Parallel Ports
PC peripherals include two high-speed 16550-compatible serial ports and an ECP or EPP
configurable parallel port.
Mouse Port
The XVME-653/658 includes a PS/2-compatible mouse port.

Chapter 1 – Introduction
1-5
Keyboard Interface
The keyboard interface uses a PS/2-style connector on the front panel. The +5 V is pro-
tected with a polyswitch. This device will open up if the +5 V is shorted to GND. Once
the shorting condition is removed, the polyswitch will allow current flow to resume.
Hard and Floppy Drives
The XVME-653/658 IDE hard drive and floppy drive signals are routed through the P2
connector, providing a simplified method of connecting external floppy and hard drives.
The XVME-653/658 will support only one floppy drive.
When used with the XVME-977 mass storage module, the hard and floppy drives do not
need to be located next to the processor. Using the supplied six-inch ribbon cable (which
connects the XVME boards’ J2 VME backplane connectors), the XVME-977 can be in-
stalled up to six slots away from the XVME-653/658 on the VME backplane. This al-
lows greater flexibility in configuring the VMEbus card cage.
For applications that require mass storage outside the VMEbus chassis, the XVME-973/1
drive adapter module plugs onto the VMEbus J2 connector. This module provides
industry standard connections for IDE and floppy signals. One floppy drive can be
connected to the XVME-973/1. This drive may be 2.88 MB, 1.44 MB, 1.2 MB, or 360
KB in size. For more information on the XVME-973/1, refer to Chapter 5.
Caution
The total cable length must not exceed 18 inches. If two drives are con-
nected, they must be no more than six inches apart.
Watchdog Timer
The XVME-653/658 incorporates a watchdog timer. When enabled, the timer can either
generate an interrupt or a master reset, depending on how you configure the watchdog
timer port. The timer input needs to be toggled within 1.6 seconds to prevent timeout.

XVME-653/658 Manual
1-6
Operational Description
Figure 1-1 is the block diagram for the XVME-653/658.
CPU Local Bus
Processor
PCI Bus
Keyboard
Controller
DRAM
ISA Bus
XBus
Buffer
X Bus
PCI to ISA Bridge
PCI to VME
Interface
L2 Cache
PCI VGA PCI Ethernet
VME
Buffers
and
hardware
byte-
swapping
(all except
XVME-653/30x)
Optional
Onboard
Flash Disk
80-pin
PCI
Super I/O RTC
Flash
BIOS
FPGA
Flash/Port
LED
CRT RJ45
V
ME P1 & P2
Keyboard
and Mouse
Connectors
USB
CPU to PCI bridge
LPT1 COM1 COM2
P2
Floppy
P2
IDE
Figure 1-1 XVME-653/658 Block Diagram

Chapter 1 – Introduction
1-7
Environmental Specifications
Characteristic Specification
Temperature:
Operating (100 cfm airflow)
XVME-653 (Intel 233 MHz Pentium)
XVME-658 (AMD 333 MHz K6-2)
Nonoperating
0 to 50°C (32 to 122°F)
0 to 45°C (32 to 113°F)
-45 to 85°C (-49 to 185°F)
Vibration:
Frequency
Operating
Nonoperating
5 to 2000 Hz
0.015” (0.38 mm) peak-to-peak displacement
2.5 G (maximum) acceleration
0.030” (0.76 mm) peak-to-peak displacement
5.0 G (maximum) acceleration
Shock: Operating
Nonoperating
30 G peak acceleration, 11 msec duration
50 G peak acceleration, 11 msec duration
Humidity 20% to 80% RH, noncondensing
Hardware Specifications
Characteristic Specification
Power Specifications:
+12V
-12V
+5V:
XVME-653 (Intel 233 MHz Pentium)
XVME-658 (AMD 333 MHz K6-2)
75 mA maximum
24 mA maximum
10.59 A (maximum); 5.87 A (typical)
10.59 A (maximum); 6.5 A (typical)
CPU speed: XVME-653
XVME-658
233 MHz
333 MHz
Cache 512 KB pipeline burst cache
Ethernet controller Intel 82558 10/100 BaseTX Fast Ethernet; RJ-45
PCI Super VGA Graphics Controller 1280 x 1024 maximum resolution, 256 colors; 2 MB VRAM
Serial Ports RS-232C, 16550 compatible (2)
USB (1)
Parallel Interface EPP/ECP compatible (1)
Onboard memory Fast-page or EDO DRAM, ECC or parity, up to 256 MB
Regulatory Compliance European Union
Electromagnetic Compatibility - 89/336/EEC
VMEbus Compliance
Complies with VMEbus Specification ANSI/VITA 1–1994
A32/A24/A16:D64/D32/D16/D08(EO) DTB Master
A32/A24/A16:D64/D32/D16/D08(EO) DTB Slave
R(0-3) Bus Requester
Interrupter I(1)-I(7) DYN
IH(1)-IH(7) Interrupt Handler
SYSCLK and SYSRESET Driver
PRI, SGL, RRS Arbiter
RWD, ROR bus release
Form Factor: Double-height, single-width 233 mm x 160 mm (9.2” x 6.3”)

XVME-653/658 Manual
1-8
System Configuration and Expansion Options Tables
Your XVME-653/658 can be ordered in a variety of configurations and expanded as
well. The following tables show these options.
Table 1-1 XVME-653/658 CPU and DRAM Configurations and Byte-Swapping Hardware
XVME-653
Intel 233 MHz Pentium CPU
XVME-658
AMD 333 MHz K6-2 CPU
Ordering
Number
Byte-Swapping
Hardware?
DRAM Byte-Swapping
Hardware?
DRAM
XVME-653/310 Yes None XVME-658/310 Yes None
XVME-653/313 Yes 32 MB XVME-658/313 Yes 32 MB
XVME-653/314 Yes 64 MB XVME-658/314 Yes 64 MB
XVME-653/315 Yes 128 MB XVME-658/315 Yes 128 MB
XVME-653/316 Yes 256 MB XVME-658/316 Yes 256 MB
XVME-653/300 No None
XVME-653/303 No 32 MB
XVME-653/304 No 64 MB
XVME-653/305 No 128 MB
XVME-653/306 No 256 MB
The ordering number is broken into two parts. The model number is the 653 or 658. The
tab number is the three digits after the slash. For the XVME-653/658, the tab number in-
dicates the presence of byte-swapping hardware (the second digit is a one if the unit has
byte-swapping hardware, otherwise it is a zero) and the amount of DRAM memory (the
third digit). DRAM options are explained more fully in Appendix A.
There are also several expansion options for the XVME-653/658.
Table 1-2 XVME-653/658 Expansion Options
Ordering
Number
Description
XVME-973/1 Drive Adapter Module for external drives
XVME-976/201 PMC and PC/104 Expansion Module
XVME-976/202 16-bit short ISA Expansion Module
XVME-976/203 Dual PMC Expansion Module
XVME-976/204 Dual PC/104 Expansion Module
XVME-976/205 PCI Carrier Module
XVME-977 Single-slot Mass Storage Module
XVME-992/8 8 MB DiskOnChip
XVME-992/24 24 MB DiskOnChip
XVME-992/40 40 MB DiskOnChip
XVME-992/72 72 MB DiskOnChip
XVME-992/144 144 MB DiskOnChip
The XVME-976 expansion modules and the XVME-977 module are described in their
own manuals. The XVME-973/1 is described in Chapter 5.

2-1
Chapter 2 – Installation
This chapter provides information on configuring the XVME-653/658 modules. It also
provides information on installing the XVME-653/658 into a backplane and enabling the
Ethernet controller. Figure 2-1 and Figure 2-2 illustrate the jumper, switch, and connec-
tor locations on the XVME-653/658. Note that the version of the XVME-653 module
without the byte-swapping hardware has three jumpers in slightly different positions.
OPEN
123 4
P3 P4
P1 CONNECTOR P2 CONNECTOR
CPU
P8
KEYBD
P9
MOUSE
SW2
RESET/
ABORT
SWITCH
P10
10/100
BASETX
P11
COM 2
P12
COM 2
JK1
LPT1
P13
USB
P14
VGA
XVME-976
CONNECTORS
MEMORY
SOCKETS
SW1
J13
J20
J1
J2
J3
J4 J6
J10 J11 J12
J7
J8
J9
J5
J14 J15
J16 J17 J19
AB B BAA
A
B
B
A
B
A
A
B
A
B
A
B
DISKONCHIP SITE (U9)
Pin 1
Figure 2-1 XVME-653/658 Jumper, Switch, and Connector Locations
J16
J17
J19
AB
Figure 2-2 J16, J17, and J19 Jumper Locations for XVME-653/30x (no byte-swapping hardware)

XVME-653/658 Manual
2-2
Jumper Settings
The following tables list the XVME-653/658 jumpers, their default positions (either
checked or labeled by module number), and their functions. Jumper locations are shown
in Figure 2-1 and Figure 2-2.
Table 2-1 General Jumper Settings
Jumper Position Function
J1 In
Out √
√√
√
Disables system resource function
Enables system resource function
J13 A√
√√
√
B
Reserve 1
J16 A√
√√
√
B
Boot from Flash
Boot from ROM
J17 A
B√
√√
√
Clear CMOS memory
Normal CMOS memory
J19 A√
√√
√
B
Reserve 2
J20 A
B√
√√
√
Reserve 3
CPU Configuration
Table 2-2 CPU Configuration Jumper Settings
Module/Speed J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12
XVME-653/233 MHz BAAAABBB A A A
XVME-658/333 MHz AABAABBB B A B
CPU Core Voltage
Table 2-3 CPU Core Voltage Jumper Settings
CPUCoreVoltage J2J3J4J5J6
2.2 V (XVME-658/333 MHz) AABAA
2.8 V (XVME-653/233 MHz) BAAAA
CPU Voltage Plane Configuration
Table 2-4 CPU Voltage Plane Configuration Jumper Settings
CPU Configuration J7 J8 J9
Single Voltage Plane A A A
Split Voltage Planes (XVME-653/658) √
√√
√BBB

Chapter 2 – Installation
2-3
Processor Speed
Table 2-5 Processor Speed Jumper Settings
Processor Speed J10 J11 J12
3/2x (XVME-653/233 MHz) A A A
5x (XVME-658/333 MHz) B A B
Memory
Table 2-6 Memory Voltage Jumper Settings
Memory J14 J15
5.0 V √
√√
√AA
3.3 V B B

XVME-653/658 Manual
2-4
Switch Settings
The XVME-653/658 has one four-pole switch (SW1). This switch controls the system
response to the front panel Reset switch (SW2). Table 2-7 shows the switch settings re-
quired to reset on the XVME-653/658 CPU, to reset only the VME backplane, or to reset
both. The switch 3 is reserved and should always be closed. The XVME-653/658 is
shipped with all four switches in the closed position (which causes SW2 to reset both the
XVME-653/658 and the VME backplane). Both switches are shown on Figure 2-1.
Table 2-7 Four-Pole Switch (SW1) Settings
For the front panel reset
switch (SW2) is to do this:
The four-pole switch
(SW1) settings must be:
124
No Resets Closed Open Open
Reset the VME backplane only* Open Closed Open
Reset the XVME-653/658 CPU only** Closed Open Closed
Reset both the VME backplane and the
XVME-653/658 CPU (default setting)
Closed
√
√√
√
Closed
√
√√
√
Closed
√
√√
√
*Caution
Resetting only the VME backplane will reset the Universe chip.
**Caution
If you have an older XVME-653 which has a Tundra Universe chip in-
stead of a Tundra Universe II chip (U19), you do not have the ability to
reset the CPU only. The option to reset both the CPU and the VME
backplane still works normally.
You can tell a Universe from a Universe II by looking at the model num-
ber on the top of the chip. The Universe has CA91C042-33CE and the
Universe II has CA91C142-33CE.