Compaq 164LX - page 41

Interrupts and ISA Bus Addresses 6–3

ISA I/O Address Map

6.2.1 Flash ROM Address Map

The address range for the flash ROM is FFF8.0000–FFFF.FFFF. Flash space of 1MB

is obtained by double mapping this 512KB space. FLASH_ADR19 register at I/O

location 80016 provides this function. Writing a 0 to this location enables the lower

512KB of flash. Writing a 1 to this location enables the upper 512KB of flash.

Contents

Main Page Contents 1 About This Manual 2 Features 3 AlphaPC 164LX Jumper Configuration 4 AlphaPC 164LX Connector Pinouts 5 Memory and Microprocessor Configuration 6 Interrupts and ISA Bus Addresses 7 Alpha SRM Console Firmware Page Figures Tables Page About This Manual 1.1 Manual Conventions and Terminology Manual Conventions and Terminology Features Features Table 21 provides an overview of the AlphaPC 164LX motherboards features. Table 21 AlphaPC 164LX Features 22 Features Figure 21 AlphaPC 164LX Jumper/Connector/Component Location Page Power Requirements 2.1 Power Requirements 2.2 Environmental Requirements 2.3 Physical Parameters 26 Features Physical Parameters 2.3.1 ATX Hole Specification Figure 22 ATX Hole Specification Features Physical Parameters 2.3.2 ATX I/O Shield Requirements Figure 23 ATX I/O Shield Dimensions Page AlphaPC 164LX Jumper Configuration 3.1 CPU Speed Selection 3.2 Bcache Size Jumpers (CF1 and CF2) 32 AlphaPC 164LX Jumper Configuration Bcache Size Jumpers (CF1 and CF2) Figure 31 AlphaPC 164LX Configuration Jumpers J27 System Configuration Jumpers J28 Flash ROM Update Jumpers Page Page AlphaPC 164LX Connector Pinouts 4.1 PCI Bus Connector Pinouts Table 41 shows the PCI bus connector pinouts. PCI Bus Connector Pinouts ISA Expansion Bus Connector Pinouts 4.2 ISA Expansion Bus Connector Pinouts Table 42 shows the ISA expansion bus connector pinouts. SDRAM DIMM Connector Pinouts 4.3 SDRAM DIMM Connector Pinouts Table 43 shows the SDRAM DIMM connector pinouts. EIDE Drive Bus Connector Pinouts 4.4 EIDE Drive Bus Connector Pinouts Table 44 shows the EIDE drive bus connector pinouts. Diskette (Floppy) Drive Bus Connector Pinouts 4.5 Diskette (Floppy) Drive Bus Connector Pinouts Table 46 shows the parallel bus connector pinouts. Table 45 shows the diskette (floppy) drive bus connector pinouts. 4.6 Parallel Bus Connector Pinouts COM1/COM2 Serial Line Connector Pinouts 4.7 COM1/COM2 Serial Line Connector Pinouts Table 48 shows the keyboard/mouse connector pinouts. Table 47 shows the COM1/COM2 serial line connector pinouts. 4.8 Keyboard/Mouse Connector Pinouts SROM Test Data Input Connector Pinouts 4.9 SROM Test Data Input Connector Pinouts Table 411 shows the enclosure fan power connector pinouts. Table 49 shows the SROM test data input connector pinouts. 4.10 Input Power Connector Pinouts Table 410 shows the input power connector pinouts. 4.12 Speaker Connector Pinouts Table 413 shows the microprocessor fan power connector pinouts. Table 412 shows the speaker connector pinouts. 4.13 Microprocessor Fan Power Connector Pinouts 4.14 Power LED Connector Pinouts 4.15 EIDE Drive LED Connector Pinouts 4.16 Reset Button Connector Pinouts 4.17 Halt Button Connector Pinouts 4.18 Soft Power Connector Pinouts Memory and Microprocessor Configuration 5.1 Configuring SDRAM Memory Upgrading SDRAM Memory 5.2 Upgrading SDRAM Memory 5.3 Increasing Microprocessor Speed 5.3.3 Removing the 21164 Microprocessor 5.3.4 Installing the 21164 Microprocessor Page Page Interrupts and ISA Bus Addresses 6.1 Interrupts Table 61 lists each AlphaPC 164LX ISA interrupt and its source. ISA I/O Address Map 6.2 ISA I/O Address Map Table 62 lists the AlphaPC 164LX ISA I/O space address mapping. Page Page Alpha SRM Console Firmware 7.1 Alpha SRM Console Firmware Conventions Alpha SRM Console Firmware Conventions 7.2 Basic Alpha SRM Console Command Descriptions arc boot Page Page deposit <data> The data to be deposited. Options Page examine Page Page fwupdate set Page show 7.3 Environment Variables for Alpha SRM Console Commands 7.3.1 Environment Variable Descriptions Page Page Page Using the AlphaBIOS Firmware Update Utility to Update the Flash ROM 7.4 Using the AlphaBIOS Firmware Update Utility to Update the Flash ROM 7.4.1 AlphaBIOS Conventions Page Page Page Page Page Page 7.5 Installing the Tru64 UNIX Operating System Page Troubleshooting 8.1 Hardware Startup Beep Codes 8.2 Beep Codes 8.3 Post Codes Post Codes Fail-Safe Booter 8.4 Fail-Safe Booter Battery Recycle/Disposal Information Page A Support A.1 Customer Support The Alpha OEM website provides the following information for customer support. A.2 Supporting Products A.2.1 Memory A.2.2 Thermal Products A.2.3 Power Supply Alpha Documentation A.3 Alpha Documentation ThirdParty Documentation A.4 ThirdParty Documentation You can order the following third-party documentation directly from the vendor.