Compaq 164LX User Manual
AlphaPC 164LX Motherboard
Tru64 UNIX
User’s Manual
Order Number: EC–R2ZPC–TE
Revision/Update Information:
Compaq Computer Corporation
This is a revised document. It
supersedes the AlphaPC 164LX
Motherboard DIGITAL UNIX User’s
Manual, EC–R2ZPB–TE.
March 1999
The information in this publication is subje c t to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL
ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. THIS
INFORMATION IS PROVIDED “AS IS” AND COMPAQ COMPUTER CORPORATION DISCLAIMS ANY
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INFRINGEMENT.
This publication con ta ins information protecte d by copyright. No part of this publication may be photocopi ed or
reproduced in any form wit hout prior written consen t from Compaq Computer Corporation.
© 1999 Digital Equipment Corporation
All rights reserved. Printed in U.S.A.
The software described i n thi s publication is furnished unde r a l ic ense agreement or nondi scl osure agreement. The
software may be used or copied only in accordance with t he terms of the agreement.
COMPAQ, the Compaq logo, the Di gital logo, and DIGITAL Registere d in U . S . Pa tent and Trademark Office.
AlphaPC, DECnet, OpenVMS, and Tru64 are trademarks of Compaq Computer Corporation.
Microsoft, MS-DOS, Windows, and Windows NT are registered trad em arks of Microsoft Corporation .
Intel is a registered tra demark of Intel Corporat ion.
Other product names mentioned herein may be the trademarks of their respective companies.
Contents
1 About This Manual
1.1 Manual Conventions and Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2 Features
2.1 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.2 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.3 Physical Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.1 ATX Hole Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.3.2 ATX I/O Shield Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3 AlphaPC 164LX Jumper Configuration
3.1 CPU Speed Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Bcache Size Jumpers (CF1 and CF2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.3 Boot Option Jumper (CF7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.4 Flash ROM Update Jumper (J28). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
4 AlphaPC 164LX Connector Pinouts
4.1 PCI Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 ISA Expansion Bus Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.3 SDRAM DIMM Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.4 EIDE Drive Bus Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.5 Diskette (Floppy) Drive Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.6 Parallel Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.7 COM1/COM2 Serial Line Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.8 Keyboard/Mouse Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.9 SROM Test Data Input Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.10 Input Power Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
iii
4.11 Enclosure Fan Power Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.12 Speaker Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.13 Microprocessor Fan Power Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.14 Power LED Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.15 EIDE Drive LED Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.16 Reset Button Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.17 Halt Button Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.18 Soft Power Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
5 Memory and Microprocessor Configuration
5.1 Configuring SDRAM Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Upgrading SDRAM Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 Increasing Microprocessor Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.1 Preparatory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.2 Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.3 Removing the 21164 Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.4 Installing the 21164 Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
6 Interrupts and ISA Bus Addresses
6.1 Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 ISA I/O Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2.1 Flash ROM Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
7 Alpha SRM Console Firmware
7.1 Alpha SRM Console Firmware Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Basic Alpha SRM Console Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . 7-3
7.3 Environment Variables for Alpha SRM Console Commands. . . . . . . . . . . . . . . . 7-18
7.3.1 Environment Variable Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
7.3.1.1 Architecture-Required Environment Variables . . . . . . . . . . . . . . . . . . . . 7-19
7.3.1.2 System-Defined Environment Variables. . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.4 Using the AlphaBIOS Firmware Update Utility to Update the Flash ROM . . . . . . 7-22
7.4.1 AlphaBIOS Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
7.4.2 Starting the AlphaBIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7.4.3 Installing Alpha SRM Console Using AlphaBIOS Setup Program. . . . . . . . . 7-24
7.5 Installing the Tru64 UNIX Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
7.5.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
iv
8 Troubleshooting
8.1 Hardware Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.3 Post Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.4 Fail-Safe Booter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
9 Battery Recycle/Disposal Information
A Support
A.1 Customer Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 Supporting Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.1 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.2 Thermal Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.3 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.4 Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A.3 Alpha Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A.4 Third–Party Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
v
Figures
2–1 AlphaPC 164LX Jumper/Connector/Component Location . . . . . . . . . . . . . . . . . . 2-2
2–2 ATX Hole Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2–3 ATX I/O Shield Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3–1 AlphaPC 164LX Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
5–1 Fan/Heat-Sink Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
7–1 AlphaBIOS Boot Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7–2 AlphaBIOS Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7–3 AlphaBIOS Upgrade Options Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
7–4 AlphaBIOS Warning Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
7–5 AlphaBIOS Upgrade SRM Console Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
7–6 AlphaBIOS Upgrade Complete Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
vi
Tables
2–1 AlphaPC 164LX Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2–2 AlphaPC 164LX Jumper/Connector/Component List . . . . . . . . . . . . . . . . . . . . . . 2-3
2–3 Power Supply DC Current Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2–4 AlphaPC 164LX Motherboard Environmental Requirements . . . . . . . . . . . . . . . . 2-5
4–1 PCI Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4–2 ISA Expansion Bus Connector Pinouts (J30, J31) . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4–3 SDRAM DIMM Connector Pinouts (J8 through J11) . . . . . . . . . . . . . . . . . . . . . 4-4
4–4 EIDE Drive Bus Connector Pinouts (J6, J7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4–5 Diskette (Floppy) Drive Bus Connector Pinouts (J15). . . . . . . . . . . . . . . . . . . . . . 4-6
4–6 Parallel Bus Connector Pinouts (J13). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4–7 COM1/COM2 Serial Line Connector Pinouts (J4). . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4–8 Keyboard/Mouse Connector Pinouts (J5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4–9 SROM Test Data Input Connector Pinouts (J29) . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4–10 Input Power Connector Pinouts (J3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4–11 Enclosure Fan (+12 V dc) Power Connector Pinouts (J2, J19) . . . . . . . . . . . . . . 4-8
4–12 Speaker Connector Pinouts (J20). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4–13 Microprocessor Fan Power Connector Pinouts (J18) . . . . . . . . . . . . . . . . . . . . . . 4-9
4–14 Power LED Connector Pinouts (J24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4–15 EIDE Drive LED Connector Pinouts (J25). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4–16 Reset Button Connector Pinouts (J21) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4–17 Halt Button Connector Pinouts (J22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4–18 Soft Power Connector Pinouts (J1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
5–1 AlphaPC 164LX SDRAM Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6–1 ISA Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6–2 ISA I/O Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7–1 AlphaBIOS Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
8–1 Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8–2 Post Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
vii
About This Manual
This manual describes the AlphaPC 164LX motherboard, a module for computing
systems based on the Alpha 21164 microprocessor and the companion 21174 core
logic chip. It describes the motherboard’s features and how to set its configuration
jumpers. This manual helps users to install and populate the AlphaPC 164LX
motherboard with memory modules and peripheral cards.
1.1 Manual Conventions and Terminology
The following conventions are used in this manual.
Caution: Cautions indicate potential damage to equipment, software, or data.
Note: Notes provide additional information about a topic.
Numbering: All numbers a re dec imal or hexadec imal un less o therwi se ind icate d. In
case of ambiguity, a subscript indicates the radix of nondecimal numbers. For
example, 19 is a decimal number, but 19
Extents: Extents are specified by a single number or a pair of numbers in square
brackets ([ ]) separated by a colon (:), and are inclusive. For example, bits [7:3]
specify an extent including bits 7, 6, 5, 4, and 3. Multiple bit fields are shown as
extents.
and 19A are hexadecimal numbers.
16
1
Register Fi gures: Register figures have bit and field position numbering starting at
the right (low -order) and increasing to the left (high-order).
Signal Names: All signal names are printed in boldface type. Signal names that
originate in an industry-standard specification, such as PCI or IDE, are printed in the
case as found in the speci ficat ion ( usuall y upper case) . Activ e low s ignals have e ither
a pound sign “#” appended, or a “not” overscore bar; for example, DEVSEL# and
RESET
.
About This Manual 1–1
Manual Conventions and Terminology
Italic Type: Italic type emphasizes important information and indicates complete
titles of documents.
Terms: The following terms are used in this manual:
This term... Refers to...
Alpha SRM console The Alpha SRM Console firmw are
DIGITAL UNIX installation guide The DIGITAL UNIX Installation Guide
Tru64 UNIX The Tru64 UNIX (formerly DIGITAL UNIX)
operating system
1–2 About This Manual
2
Features
Table 2–1 provides an overview of the AlphaPC 164LX motherboard’s features.
Table 2–1 AlphaPC 164LX Features
Feature Description
Microprocessor Alpha 21164 microprocessor
(64-bit RISC)
Core logic chip 21174 core logic chip, comprising a single co ntrol chip that pro-
vides an interface to system memory and the PCI bus
Synchronous DRAM (SDRAM)
memory
Caching:
L1 Icache 8KB, direct-mapped instruction cache on the CPU chip
L1 Dcache 8KB, direct-mapped data cache on the CPU chip
L2 Scache 96KB, three-way , set -associ ative, wr ite-ba c k unifie d instru ctio n
L3 backup cache Onboard 2MB, direct-mapped, synchronous SSR AM backup
I/O and miscellaneous support 32-bit and 64-bit, 33-MHz PCI
Firmware Alpha SRM Console firmware
32MB to 1GB memory array –- Two banks of 128-bit memory;
168-pin unbuffered SDRAM DIMMs
and data cache on the CPU chip
cache with 128-bit data path
Two 64-bit and two 32-bit PCI expansi on slots
PCI/EIDE control (CMD PCI0646)
Intel 82378ZB PCI-to-ISA bridge chip
Two dedicated ISA expansion slots
SMC FDC37C935 combination controller chip provides control
for diskettes, two UARTs with modem control, parallel port, keyboard, mouse, and time-of-year cl ock
1MB flash ROM
Features 2–1
Figure 2–1 shows the AlphaPC 164LX motherboard and its components and
Table 2–2 describes these components.
Figure 2–1 AlphaPC 164LX Jumper/Connector/Component Location
J31J30J28J27
J25
J24
J18
J19
J20
J21
J22
J6
J7
U62
U61
*
*
*
U48
U40
U31 U32 U33
U20 U21 U22
U8 U9
U10
J29
*
U58
*
U59 U60
J26
J23
B1
*
U49
**
U50
U43
U41
U37
*
U42
*
U53
*
J17
J16
J15
J13
J5
J4
2–2 Features
Denotes Pin #1
*
J2J11J10
Mouse
Keyboard
*
Top:
Bottom:
FM-05933.AI4
COM1
COM2
J4
*
J9J8J1J3
Top:
J5
Bottom:
Table 2–2 AlphaPC 164LX Jumper/Connector/Component List
Item No. Description Item No. Description
B1 RTC battery (CR2032) J25 Hard-drive LED connector
J1 Soft power connector J26 PCI slot 0 (64-bit)
J2 Fan powe r, enclos ure (+12V) J27 System co nfiguration jumpe rs
J3 Power (+3V, +5V, -5V, +12V, -12V) J28 Flash ROM update enable/disable
jumper
J4 COM1/COM2 (DB9) connectors J29 SROM test port connector
J5 Keyboard/mouse connectors J30 ISA slot 1
J6 EIDE drive 2/3 connector J31 ISA slot 0
J7 EIDE drive 0/1 connector U8 to U10 Cache SRAM (L3)
J8 SDRAM DIMM 0 [0:63] connector U20 to U22 Cache SRAM (L3)
J9 SDRAM DIMM 1 [64:128] connector U31 to U33 Cache SRAM (L3)
J10 SDRAM DIMM 2 [0:63] connector U37 I/O interface and address control
(DS 21174-CA)
J11 SDRAM DIMM 3 [64:128] connector U40 Microprocessor, socket
(DS Alpha 21164)
J12 Reserved U41 Patch 8K PAL
J13 Parallel I/O connector U42 EIDE controller
J14 Reserved U43 System clock PLL (CY2308)
J15 Diskette (floppy) drive connector U48 Microprocessor clock synthesizer
(MC12439)
J16 PCI slot 3 (32-bit) U49 Serial ROM, socketed (Xilinx
XC17128D)
J17 PCI slot 2 (32-bit) U50 PCI-to-ISA bridge (Intel 82378ZB)
J18 Microprocessor fan/fan sense connec-
tor
U53 Combination controller, Super I/O
(SMC FDC37C935)
J19 Enclosure fan +12V power connector U58 Flash ROM (1MB)
J20 Speaker connector U59 PCI arbiter PAL
J21 Reset button connector U60 PCI interrupt request PAL
J22 Halt button connector U61 Power controller
J23 PCI slot 1 (64-bit) U62 P ower sens e
J24 Power LED connector
Features 2–3
Power Requirements
2.1 Power Requirements
The AlphaPC 164LX motherboard has a total power dissipatio n of 100 W, excluding
any plug-in PCI and ISA devices. Table 2–3 lists the power requirement for each dc
supply voltage.
The power supply must be ATX-compliant.
Table 2–3 Power Supply DC Current Requirements
Voltage/Tolerance Current
+3.3 V dc, ±5% 5.0 A
1
+5 V dc,
–5 V dc,
+12 V dc,
–12 V dc,
1
Caution: Fan sensor requi red. The 21 16 4 mic rop rocessor cooling fan must have
±5% 14.0 A
±5% 0 A
±5% 1.0 A
±5% 100.0 mA
Values indicated are for an AlphaPC 164LX mot herboard with an Alpha 21164 microprocessor
operating at 600 MHz, with 64MB SDRAM, excluding adapter cards and disk drives.
a built-in sensor t hat will dr ive a sig nal if t he airflow st ops. The se nsor is
connected to motherboard connector J18. When the signal is generated,
it resets the system.
2.2 Environmental Requirements
The 21164 microprocessor is cooled by a small fan blowing directly into the chip’s
heat sink. The AlphaPC 164LX motherboard is designed to run efficiently by using
only this fan. Additional fans may be necessary depending upon cabinetry and the
requirements of plug-in cards.
2–4 Features
Physical Parameters
The AlphaPC 164LX motherboard is specified to run within the environment listed
in Table 2–4.
Table 2–4 AlphaPC 164LX Motherboard Environmental Requirements
Parameter Specification
Operating temperature 10°C to 40°C (50°F to 104°F)
Storage temperature –55°C to 125°C (–67°F to 257°F)
Relative humidity 10% to 90% with maximum wet bulb temp erature 28°C
(82°F) and minimum dew point 2°C (36°F)
Rate of (dry bulb) temperature
change
2.3 Physical Parameters
The AlphaPC 164LX motherboa rd is an ATX-size printed-wiring boar d ( P WB) wi th
the following dimensions :
• Length: 30.48 cm (12.0 in ±0.0005 in)
• Width: 24.38 cm (9.6 in ±0.0005 in)
• Height: 6.86 cm (2.7 in)
11°C/hour
±2°C/hour (20°F/hour ±4°F/hour)
Features 2–5
Physical Parameters
2.3.1 ATX Hole Specification
Figure 2–2 shows the ATX Hole Specification f or the Alph aPC 164LX. Measurements
are shown in inches.
Figure 2–2 ATX Hole Specification
.800
TYP Between
Connectors
.400
.650
.500
1.612
4.900
9.600
.600
.625
8.950
6.100
ISA Connector
(2 Places)
This ATX hole is not supported
on AlphaPC 164LX board, and no
clearance is provided on side 2.
11.100
12.000
PCI Connector
(4 Places)
1.300
This ATX hole is not supported
on AlphaPC 164LX board,
however clearance is provided
on side 2.
2–6 Features
FM-06012.AI4
2.3.2 ATX I/O Shield Requirements
Figure 2–3 shows the ATX I/O shield dimensions for the AlphaPC 164LX. Measurements are shown in millimeters.
Figure 2–3 ATX I/O Shield Dimensions
Physical Parameters
R 1.00
5.00 TYP
21.36
16.05
9.25
3.58
2.45
4.35
11.15
15.47
17.95
22.95
23.96
29.10
33.10
68.4
64.9
64.91
60.26
51.27
42.28
40.48
34.13
24.7
25.14
16.7
16.15
14.35
8.00
0.99
9.98
11.78
18.13
19.93
28.92
35.5
37.91
43.5
44.26
46.06
55.05
64.04
7.19 TYP
74.8
70.39
72.19
78.2
81.18
85.4
87.2
90.17
94.4
98.9
95.40
FM-05986.AI4
14.96
R 1.00
Features 2–7
AlphaPC 164LX Jumper Configuration
The AlphaPC 164LX motherboard has two groups of jumpers located at J27 and J28 ,
as shown in Figure 2–1. These jumpers set the hardware configuration and boot
options. Figure 3–1 shows these jumper configurations.
3.1 CPU Speed Selection
The clock synthesizer at location U47 makes it possible to change the frequency of
the microprocessor’ s sy stem cloc k output wi thout ha ving to c hange the clock cr ystal.
Simply set the system clock divisor jumpers to adjust the frequency of the
microprocessor’s system clock output. These system clock divisor jumpers are
located at J27–1/2 (IRQ3), J27–3/4 (IRQ2), J27–5/6 (IRQ1), and J27–7/8 (IRQ0).
The jumper configuration is set in IRQ3 through IRQ0. These four jumpers set the
speed at power-up as li ste d in Fig ure 3–1. The microprocessor frequency divi ded by
the ratio determines the system clock frequency.
3.2 Bcache Size Jumpers (CF1 and CF2)
The Bcache size jumpers ar e located at J27–11/12 (CF) and J27–13/1 4 (CF2). These
jumpers configure the Bcache as specified in Figure 3–1.
3
AlphaPC 164LX Jumper Configuration 3–1
Bcache Size Jumpe rs (CF1 and CF2)
Figure 3–1 AlphaPC 164LX Configuration Jumpers
J27 System Configuration Jumpers
IRQ3
IRQ2
IRQ1
IRQ0
CF0
CF1
CF2
CF3
CF4
CF5
CF6
CF7
1
3
5
7
9
11
13
15
17
19
21
23
25
Frequency Ratio IRQ3 IRQ2 IRQ1 IRQ0 Comments
Reserved (Default Out)
Bcache Size CF1 CF2 Comments
Reserved (Default Out)
Reserved (Default Out)
Reserved (Default Out)
Reserved (Default Out)
Boot_Option (Default Out)
Reserved (Default Out)
J28 Flash ROM Update Jumpers
1
1 to 2 In = Disable
2
2 to 3 In = Enable (Default)
3
466 MHz 7 In Out Out Out Default
533 MHz 8 Out In In In
600 MHz 9 Out In In Out
All other combinations are reserved.
2MB Out Out Default
All other combinations are reserved.
3–2 AlphaPC 164LX Jumper Confi guration
3.3 Boot Option Jumper (CF7)
The boot option jumper is located at J27–23/24 (CF7). The default position for this
jumper is out (Figure 3–1). This jumper selects the image to be loaded into memory
from the system flash ROM. With the jumper out, the SRM Console firmware is
loaded. With the jumper in, the fail-safe booter is loaded. For more informatio n
about the fail-safe booter, refer to Section 8.4.
3.4 Flash ROM Update Jumper (J28)
When J28–2/3 are jumpered together (default), the flash ROM is write-enabled.
When J28–1/2 are jumpered together, the flash ROM is write-protected.
Boot Option Jumper (CF7)
AlphaPC 164LX Jumper Configuration 3–3
AlphaPC 164LX Connector Pinouts
This chapter contains pinouts for all of the AlphaPC 164LX connectors. See
Figure 2–1 for connector locations.
4.1 PCI Bus Connector Pinouts
Table 4–1 shows the PCI bus connector pinouts.
Table 4–1 PCI Bus Connector Pinouts
Pin Signal Pin Signal Pin Signal Pin Signal
32-Bit and 64-Bit PCI Connectors (J16, J17, J23, J26)
A1 TRST# A2 +12V A3 TMS A4 TDI
A5 Vdd A6 INTA A7 INTC A8 Vdd
A9 —A10Vdd A11 — A12 Gnd
A13 Gnd A14 — A15 RST# A16 Vdd
A17 GNT# A18 Gnd A19 — A20 AD[30]
A21 +3V A22 AD[28] A23 AD[26] A24 Gnd
A25 AD[24] A26 IDSEL A27 +3V A28 AD[22]
A29 AD[20] A30 Gnd A31 AD[18] A32 AD[16]
A33 +3V A34 FRAME# A35 Gnd A36 TRDY#
A37 STOP# A38 STOP# A39 +3V A40 SDONE
A41 SBO# A42 Gnd A43 PAR A44 AD[15]
A45 +3V A46 AD[13] A47 AD[11] A48 Gnd
A49 AD[09] A50 Not used A51 Not used A52 C/BE#[0]
A53 +3V A54 AD[06] A55 AD[04] A56 Gnd
A57 AD[02] A58 AD[00] A59 Vdd A60 REQ64#
A61 Vdd A62 Vdd B1 -12V B2 TCK
B3 Gnd B4 TDO B5 Vdd B6 Vdd
B7 INTB B8 INTD B9 PRSNT1# B10 —
4
AlphaPC 164LX Connector Pinouts 4–1
PCI Bus Connector Pinouts
Table 4–1 PCI Bus Connector Pinouts (Continued)
Pin Signal Pin Signal Pin Signal Pin Signal
B11 PRSNT2# B12 Gnd B13 Gnd B14 —
B15 Gnd B16 CLK B17 Gnd B18 REQ#
B19 Vdd B20 AD[31] B21 AD[29] B22 Gnd
B23 AD[27] B24 AD[25] B25 +3V B26 C/BE#[3]
B27 AD[23] B28 Gnd B29 AD[21] B30 AD[19]
B31 +3V B32 AD[17] B33 C/BE#[2] B34 Gnd
B35 IRDY# B36 +3V B37 DEVSEL# B38 Gnd
B39 LOCK# B40 PERR# B41 +3V B42 SERR#
B43 +3V B44 C/BE#[1] B45 AD[14] B46 Gnd
B47 AD[12] B48 AD[10] B49 Gnd B50 Not used
B51 Not used B52 AD[08] B53 AD[07] B54 +3V
B55 AD[05] B56 AD[03] B57 Gnd B58 AD[01]
B59 Vdd B60 ACK64# B61 Vdd B62 Vdd
64-Bit PCI Connectors Only (J23, J26)
A63 Gnd A64 C/BE#[7] A65 C/BE#[5] A66 Vdd
A67 PAR64 A68 D[62] A69 Gnd A70 D[60]
A71 D[58] A72 Gnd A73 D[56] A74 D[54]
A75 Vdd A76 D[52] A77 D[50] A78 Gnd
A79 D[48] A80 D[46] A81 Gnd A82 D[44]
A83 D[42] A84 Vdd A85 D[40] A86 D[38]
A87 Gnd A88 D[36] A89 D[34] A90 Gnd
A91 D[32] A92 — A93 Gnd A94 —
B63 — B64 Gnd B65 C/BE#[6] B66 C/BE#[4]
B67 Gnd B68 D[63] B69 D[61] B70 Vdd
B71 D[59] B72 D[57] B73 Gnd B74 D[55]
B75 D[53] B76 Gnd B77 D[51] B78 D[49]
B79 Vdd B80 D[47] B81 D[45] B82 Gnd
B83 D[43] B84 D[41] B85 Gnd B86 D[39]
B87 D[37] B88 Vdd B89 D[35] B90 D[33]
B91 Gnd B92 — B93 — B94 Gnd
4–2 AlphaPC 164LX Connec tor Pinouts
ISA Expansion Bus Connector Pinouts
4.2 ISA Expansion Bus Connector Pinouts
Table 4–2 shows the ISA expansion bus connector pinouts.
Table 4–2 ISA Expansion Bus Connector Pinouts (J30, J31)
Pin Signal Pin Signal Pin Signal Pin Signal
1 Gnd 2 IOCHCK# 3 RSTDRV 4 SD7
5 Vdd 6 SD6 7 IRQ9 8 SD5
9 –5V 10 SD4 11 DRQ2 12 SD3
13 –12V 14 SD2 15 ZEROWS# 16 SD1
17 +12V 18 SD0 19 Gnd 20 IOCHRDY
21 SMEMW# 22 AEN 23 SMEMR# 24 SA19
25 IOW# 26 SA18 27 IOR# 28 SA17
29 DACK3# 30 SA16 31 DRQ3 32 SA15
33 DACK1# 34 SA14 35 DRQ1 36 SA13
37 REFRESH# 38 SA12 39 SYSCLK 40 SA11
41 IRQ7 42 SA10 43 IRQ6 44 SA9
45 IRQ5 46 SA8 47 IRQ4 48 SA7
49 IRQ3 50 SA6 51 DACK2# 52 SA5
53 TC 54 SA4 55 BALE 56 SA3
57 Vdd 58 SA2 59 OSC 60 SA1
61 Gnd 62 SA0 63 MEMCS16# 64 SBHE#
65 IOCS16# 66 LA23 67 IRQ10 68 LA22
69 IRQ11 70 LA21 71 IRQ12 72 LA20
73 IRQ15 74 LA19 75 IRQ14 76 LA18
77 DACK0# 78 LA17 79 DRQ0 80 MEMR#
81 DACK5# 82 MEMW# 83 DRQ5 84 SD8
85 DACK6# 86 SD9 87 DRQ6 88 SD10
89 DACK7# 90 SD11 91 DRQ7 92 SD12
93 Vdd 94 SD13 95 MASTER# 96 SD14
97 Gnd 98 SD15 —— ——
AlphaPC 164LX Connector Pinouts 4–3
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