Reference Manual VSBC-6 Pentium / K6-2 based SBC with Ethernet, Video, and Industrial I/O
VSBC-6 Pentium / K6-2 based SBC with Ethernet, Video, and Industrial I/O MVSBC-6
Product Release Notes This page includes recent changes or improvements that have been made to this product. These changes may affect its operation or physical installation in your application. Please read the following information. Rev 5 Release • BIOS. Shipped with BIOS version 4.1.115 and later. See the VSBC-6 support web page for current BIOS release information. • CPU. Designed to support the Intel Tillamook chip. Rev 4 Release • BIOS. Shipped with BIOS version 4.1.107 and later.
Model VSBC-6 Pentium / K6-2 based SBC with Ethernet, Video, and Industrial I/O REFERENCE MANUAL Doc. Rev. 08/09/2002 VERSALOGIC CORPORATION WWW.VERSALOGIC.
Table of Contents 1. Introduction ...............................................................................................................1 Description.......................................................................................................................... 1 Technical Specifications..................................................................................................... 3 Technical Support...................................................................................
Table of Contents CPU................................................................................................................................... 25 CPU Clock Speed Multiplier............................................................................... 25 CPU Core Voltage Selection ............................................................................... 25 Approved CPU List ............................................................................................. 25 Heat Sink ...........
Table of Contents Analog Input ..................................................................................................................... 40 Hardware Configuration ...................................................................................... 40 External Connections........................................................................................... 40 Calibration ...........................................................................................................
Introduction 1 Description The VSBC-6 is a feature-packed single board computer designed for OEM control projects requiring fast processing, industrial I/O, flexible memory options, and designed-in reliability and longevity (product lifespan).
Description The VSBC-6 features high reliability design and construction including latching I/O connectors. It also features a watchdog timer, voltage sensing reset circuits, and self-resetting fuse on the 5V supply to the keyboard, mouse, USB 1.0 and Opto 22 I/O ports. VSBC-6 boards are subjected to a 48-hour burn-in and 100% functional testing and are backed by a limited two-year warranty.
Technical Specifications Technical Specifications Specifications are typical at 25°C with 5.0V supply unless otherwise noted. Board Size: 5.75" x 8.00" x 1.75"; EBX Compliant Storage Temperature: –40° C to 85° C Free Air Operating Temperature: 0° C to +60° C (free air, CPU fan with heatsink attached and operating) 0° C to +60° C (free air, CPU fanless version “h” operating) Power Requirements: (with 32 MB EDO DRAM, keyboard, and mouse) VSBC-6bx 266 MHz K6 CPU 5V ±5% @ 3.7 A (18.3 W) typ.
Technical Support Technical Support If you have problems that this manual can’t help you solve, first visit the VSBC-6 Product Support web page at http://www.versalogic.com/private/vsbc6support.asp. If you have further questions, contact VersaLogic for technical support at (541) 485-8575. You can also reach our technical support engineers via e-mail at support@versalogic.com. VSBC-6 Support Website http://www.versalogic.com/private/vsbc6support.
Configuration / Operation 2 Overview ELECTROSTATIC DISCHARGE Warning! Electrostatic discharge (ESD) can damage boards, disk drives, and other components. The circuit board must be only be handled at an ESD workstation. If an approved station is not available, some measure of protection can be provided by wearing a grounded antistatic wrist strap. Keep all plastic away from the board, and do not slide the board over any surface.
Initial Configuration and Setup Initial Configuration and Setup The following list describes the recommended components and gives an abbreviated outline for setting up a typical development system. RECOMMENDED COMPONENTS • • • • • • • • • VSBC-6 Single Board Computer 168-pin DIMM SDRAM Memory Module (PC-66 or PC-100) (VSBC-6 rev 4.00 or later) 168-pin DIMM EDO Memory Module (VSBC-6 Rev 2 or 3) ATX Power Supply SVGA Video Monitor Keyboard with PS2 connector 3.
CMOS Setup / Boot Procedure CMOS Setup / Boot Procedure • • • • Turn power on. Press the DEL key the instant that video is displayed (during the memory test). Verify correct CMOS Setup information (see table below) Insert bootable floppy disk into floppy drive or allow the system to boot from the hard drive. Basic CMOS Configuration +------------------------------------------------------------------------------+ | System Bios Setup - Basic CMOS Configuration | | (C) 2000 General Software, Inc.
Windows 95 Installation Windows 95 Installation Because of the industrial nature of the VSBC-6, a "Custom" installation of Windows 95 is recommended. Addition of ethernet and video drivers are accomplished after the operating system is fully installed. Note! If the "custom" option is not used, the installation program will hang at the 30% and 35% points in the automatic hardware detection phase.
Windows 95 Installation INSTALLATION OF WIN95 ETHERNET DRIVERS 1. With Win95 running, insert Ethernet Drivers disk into the floppy drive. 2. Hold the ALT key down and right click on the "My Computer" icon. Note the version of Windows you are running. You will need this information for step #8. 3. Start|Run|A:\EXTRACT.BAT Note: This will copy files from the floppy disk to C:\VSBC-6\NET 4. Start|Settings|Control Panel|Add New Hardware 5.
Windows 98 Installation Windows 98 Installation Because of the industrial nature of the VSBC-6, a "Custom" installation of Windows 98 is recommended. Addition of ethernet and video drivers are accomplished after the operating system is fully installed. INSTALLATION OF WIN98 OPERATING SYSTEM 1. Start out with a VSBC-6 with attached floppy drive, hard drive, and CD-ROM drive. Make sure no PC/104 expansion modules are installed. 2. Install DOS on your hard drive.
DOS Installation DOS Installation No special installation instructions are necessary for installing DOS on a VSBC-6 system. You will use regular FDISK, FORMAT, and SYS procedures which are common to all DOS installations. INSTALLATION OF DOS ETHERNET DRIVERS 1. With DOS running, insert the Ethernet Drivers disk into the floppy drive. 2. Execute A:\>EXTRACT.BAT Note: This will copy files from the floppy disk to C:\VSBC-6\NET 3. After installation, Ethernet packet drivers for DOS, and a PROTOCOL.
DOS Installation DOS Installation (continued) Directory of A:\NET IFSHLP SYS NET MSG NETH MSG NET EXE SHARES PWL SYSTEM INI WFWSYS CFG CONNECT DAT PROTMAN EXE PROTMAN DOS NDISHLP SYS SMC9000 DOS NRSETUP EXE PROTOCOL INI 4,644 76,234 123,066 450,342 622 491 840 0 13,782 21,940 4,468 28,428 33,655 545 05-26-95 05-26-95 05-26-95 05-26-95 01-01-80 01-01-80 05-26-95 01-01-80 05-26-95 05-26-95 05-26-95 04-04-97 08-06-93 01-01-80 10:57a 10:57a 10:57a 10:57a 5:21p 5:25p 10:57a 5:39p 10:57a 10:57a 10:57a 9:33a 1
DOS Installation DOS Installation (continued) A:\NET\PROTOCOL.INI (continued) [ms$netbeui] drivername=netbeui$ SESSIONS=10 NCBS=12 BINDINGS=ms$ne2clone LANABASE=0 A:\NET\SYSTEM.INI [network] filesharing=no printsharing=no autologon=yes computername=COMPNAME lanroot=A:\NET username= password= workgroup=NETNAME reconnect=no directhost=no dospophotkey=N lmlogon=0 logondomain=NETNAME preferredredir=full autostart=full maxconnections=8 [network drivers] netcard=smc9000.dos transport=ndishlp.
Reference 3 Dimensions and Mounting The VSBC-6 complies with all EBX standards which provide for specific mounting hole and PC/104-Plus stack locations as shown in the diagram below. Caution The single board computer must be supported at all eight mounting points to prevent excessive flexing when expansion modules are mated and demated. Flex damage caused by excessive force on an improperly mounted circuit board is not covered under the product warranty. Figure 1.
Dimensions and Mounting HARDWARE ASSEMBLY The VSBC mounts on four 4-40, 3/8" hardware standoffs using the corner mounting holes (A). These standoffs are secured to the underside of the circuit board using 1/4" 4-40 pan head screws. Four additional 4-40, 3/8" standoffs (B) must be used under the circuit board to prevent excessive flexing when expansion modules are mated and demated.
External Connectors External Connectors CONNECTOR LOCATION DIAGRAM Figure 3.
External Connectors CONNECTOR FUNCTIONS AND INTERFACE CABLES The table below notes the function of each connector, as well as mating connectors and cables, and the page where a detailed pinout or further information is available. Table 1: Connector Functions and Interface Cables Connector Mating Connector Function Transition Cable Cable Description Page J1 PC/104-Plus Auxiliary Power (–5V & –12V) Molex 22-01-2033 + Molex 08-50-0005 (3ea.
Jumper Block Locations Jumper Block Locations Note! Jumpers shown in as-shipped configuration. Figure 4. Jumper Block Locations VSBC-6 Reference Manual Note: See page 25 for details on how to determine the proper VCORE voltage for your CPU chip.
Jumper Block Locations JUMPER SUMMARY Table 2: Jumper Summary Jumper Block V1 Description As Shipped Page COM3 Configuration RS-232 29 6 MHz 50 6 MHz 50 RS-232 29 Normal 27 Out — RS-232 V2 RS-422 RS-485 Endpoint Station RS-485 Intermediate Station Counter/Timer 4 Clock Source External Input 6 MHz Note! Only ½ of jumper block V2 is shown in this picture. V2 Counter/Timer 5 Clock Source 6 MHz CTC#4 External Input Note! Only ½ of jumper block V2 is shown in this picture.
Jumper Block Locations umper Summary Pg 2 Jumper Block Description As Shipped Page Out 38 V6[1-2] Ethernet Media Configuration In — AUI Out — 10BaseT V6[3-4] Ethernet Address Configuration In — Base Address defined in CMOS Setup Out — Base Address 300h In 38,53 Opto 22 I/O Rack Power In — I/O rack power provided by VSBC Out — I/O rack power provided externally In 48 System BIOS Selector In — Primary System BIOS occupies F0000h to FFFFFh Out — Secondary System BIOS occupies F0000h to FFFFFh
Jumper Block Locations Jumper Summary Pg 3 Jumper Block V12 Description CPU Core Voltage Selection V12[9-10] V12[7-8] In In In In In In In In In In In In Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out In Out In Out In Out In Out In Out In Out In Out In V12[5-6] Out Out In In In In Out Out Out Out In In In In Out Out Out Out In In In In V12[3-4] In In Out Out In In Out Out In In Out Out In In Out Out In In Out Out In In V12[1-2] Out In Out In Out In Out In Out In Out In Out In Out
Power Supply Power Supply POWER CONNECTORS Main power is applied to the VSBC-6 through an EBX style 7-pin polarized connector (mating connector Molex Housing 09-50-8073, Pins 08-52-0072). A 3-pin auxiliary power input connector is also provided to supply –5V and –12V to the PC/104-Plus stack. See page 17 for connector pinout and location information. Warning! To prevent severe and possibly irreparable damage to the system, it is critical that the power connectors be wired correctly.
Power Supply POWER REQUIREMENTS The VSBC-6 requires only +5 volts (±5%) for proper operation. The voltage required for the RS232 ports and analog input sections are generated with a DC/DC converter. A variable lowvoltage supply circuit provides power to the CPU and other on-board devices. The exact power requirement of the VSBC-6 depends on several factors, including memory configuration, CPU speed, peripheral connections, type and number of expansion modules, and attached devices.
CPU CPU CPU CLOCK SPEED MULTIPLIER Jumper block V11 is used to multiply the on-board 66 MHz bus clock to match the internal clock speed of the CPU chip. For example, the 200 MHz CPU shown shown below uses a multiplier of 3.0 See page 21 for jumper configuration details. CPU CORE VOLTAGE SELECTION Jumper block V12 is used to program a variable output voltage regulator to match the VCORE power supply requirements of the CPU chip.
CPU HEAT SINK A heat sink and cooling fan must be in place whenever power is applied to the CPU. Either a clip-on or stick-on type may be used. The fan must be a 5V type. Ball bearing models are recommended for longevity. The fan connects to header J13 for power with the positive lead (red wire) connected to pin 2 (the pin nearest to the CPU chip).
System RAM System RAM COMPATIBLE MEMORY MODULES The VSBC-6 will accept one 168-pin DIMM memory module with the following characteristics: • • • • • Size Voltage Error Detection Error Correction Type 8 to 256 MB 3.3 Volt Parity or Non-Parity ECC or Non-ECC EDO, 60 ns (all VSBC-6 revisions) EDO, 60 ns or SDRAM, PC-66 or PC-100 (VSBC-6 rev 4.00 or later) Note: Parity and ECC features are not supported in the BIOS.
Disk on Chip COMPATIBLE DEVICES Any 5 Volt, M-Systems series rev 1.10 or later 2000 DOC device will work. INSTALLING THE DOC CHIP 1. Align pin 1 on the DOC with pin 1 of socket U22. 2. Push the DOC into the socket carefully until it is fully seated. 3. Make sure jumper V10[1-2] is installed. Warning! The DOC can be permanently damaged if installed incorrectly! When installing or removing the DOC, be sure to align the chip as shown in the picture below.
Serial Ports Serial Ports The VSBC-6 features four on-board 16550 based serial channels located at standard PC I/O addresses. COM1 and COM2 are RS-232 (115.2K baud) serial ports with interrupts fixed at IRQ4 and IRQ3 respectively. IRQ use can be enabled/disabled in CMOS Setup. COM3 and COM4 can be operated in RS-232, RS-422, or RS-485 modes. Two additional nonstandard baud rates are also available (programmable in the normal baud registers) of 230K and 460K baud.
Serial Ports SERIAL PORT CONNECTORS See the Connector Location Diagram on pages 17 and 18 for connector and cable information. The pinout of the DB9 connector applies to use of the VersaLogic transition cable #VL-CBL2001.
Parallel Port Parallel Port The VSBC-6 includes a standard bi-directional/EPP/ECP compatible LPT port which resides at the PC standard address of 378h. The port can be enabled/disabled and interrupt assignments can be made via the CMOS Setup screen. The pinout of the DB25 connector applies to use of the VersaLogic transition cable #VL-CBL-2601.
EIDE Hard Drive / CD-ROM Interfaces EIDE Hard Drive / CD-ROM Interfaces Two EIDE interfaces are available to connect up to four hard disk or CD-ROM drives. Connector J17 is the primary IDE controller and connector J16 is the secondary IDE controller. Use CMOS Setup to specify the drive parameters of the attached drives. Some older IDE drivers, such as those that are PIO Mode 0-1, do not operate reliably with this product.
Utility Connector Utility Connector KEYBOARD/MOUSE INTERFACE A standard PS/2 keyboard and mouse interface is accessible through connector J7. In addition, connector J7 supports a programmable LED output, hard drive activity LED, and a speaker output as shown in the table below. The pinout of the PS/2 connectors applies to use of the VersaLogic transition cable #VL-CBL-1602.
Floppy Drive Interface EXTERNAL SPEAKER A miniature 8 ohm speaker can be connected between J7 pin 5 (SPKO*) and J7 pin 6 (MKPWR). PUSH-BUTTON RESET The Utility Connector J7 (see page 33) includes an input for a push-button reset switch. Shorting J7 pin 1 to ground will cause the VSBC-6 to reboot. Floppy Drive Interface The VSBC-6 supports a standard 34-pin PC/AT style floppy disk interface at connector J18. Up to two floppy drives can be attached to this port.
Video Interface Video Interface An on-board Chips and Technologies 65550 video controller with 2MB video RAM provides full SVGA video output capabilities for the VSBC-6. Windows 95/98/NT automatically detects the 65550 and installs native driver support for all resolutions and color depths. The 65550 is also supported by QNX and VXWorks operating systems. A 40KB video BIOS located at C0000h can be shadowed via CMOS Setup.
Video Interface FLAT PANEL DISPLAY CONNECTOR See the Connector Location Diagram on page 17 for pin and connector location information.
Video Interface COMPATIBLE FLAT PANEL DISPLAYS The following list of flat panel displays are reported to work properly with the Chips and Technologies 65550B video controller chip used on the VSBC-6: • Fujitsu FLC31SVC6S • Hitachi D01VC1CAA • Hitachi LMG9970ZWCC • Hitachi LMG9972ZWCC • Hitachi TX34D61VC1CAD • NEC NL8060BC31-01 • Optrex DMF-50714NCU-FW (1024x768 DSTN) • Samsung LT121-103 • Samsung LT133X1-104 • Samsung LT133X1-124 • Sanyo LM-GK53-22NTX (DSTN) • Sanyo LM-GD53-22NAZ •
Ethernet Interface Ethernet Interface The VSBC-6 features an industry-standard Ethernet interface based on the SMC LAN LAN91C96 Interface Chip. While this interface is not NE2000 compatible, the SMC 9000 series is widely supported. Drivers are readily available to support a variety of operating systems such as QNX, VxWorks and other RTOS vendors. Win95/98/NT ship with built-in support for this Ethernet interface. The drivers load automatically when the operating system is installed.
Watchdog Timer Watchdog Timer A watchdog timer circuit is included on the VSBC-6 to reset the CPU if proper software execution fails or a hardware malfunction occurs. ENABLING THE WATCHDOG To enable or disable the watchdog, set or clear bit D0 in I/O port 0E0h (or 1E0h if selected in CMOS Setup). When changing the contents of the register, make sure not to alter the value of the other bits.
Analog Input Analog Input The VSBC-6 "–r" models employ a multi-range, 12-bit A/D converter which will accept up to eight single-ended input signals. The converter features fast 6 microsecond conversion time, with channel independent input ranges of 0 to +5V, ±5V, 0 to +10V, and ±10V. HARDWARE CONFIGURATION There are no jumpers associated with the analog input circuitry. EXTERNAL CONNECTIONS Single-ended analog voltages are applied to connector J10 as shown in the table below.
Analog Input ANALOG CONTROL REGISTER ACR (WRITE) 00E4h (or 01E4h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 PD1 PD0 ACQMOD RNG BIP A2 A1 A0 Table 18: Analog Control Register Bit Assignments Bit Mnemonic D7, D6 PD1, PD0 Description Clock and Power-Down Selection — These bits select the power savings mode and clock source for the A/D circuit.
Analog Input DIGITAL CONTROL / ANALOG STATUS REGISTER DCAS (READ/WRITE) 00E2h (or 01E2h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 — — — — — DONE DIRHI DIRLO Table 19: Digital Control / Analog Status Register Bit Assignments Bit Mnemonic D7-D3 D2 — DONE Description Reserved — These bits have no function. Analog Input Conversion Complete — This status bit is used to determine when it is OK to read data from the A/D converter. DONE = 0 DONE = 1 Conversion underway, data not yet available.
Analog Input ADC DATA HIGH REGISTER ADCHI (READ) 00E5h (or 01E5h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 D11 / 0 D11 / 0 D11 / 0 D11 / 0 D11 D10 D9 D8 The ADCHI register is a read register containing the upper 4 bits of data from the A/D conversion results. It is used in conjunction with the ADCLO register to read the complete 12-bit data word. When reading data, it is normal convention to read the ADCLO register first, followed by the ADCHI register.
Analog Input ADC DATA LOW REGISTER ADCLO (READ) 00E4h (or 01E4h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 The ADCLO register is a read register containing the lower 8 bits of data from the A/D conversion results. It is used in conjunction with the ADCHI register to read the complete 12-bit data word. After a conversion is complete (as reported by the DONE bit in the ADCSTAT register) the ADCLO register should be read first, followed by the ADCHI register.
Analog Input TWO'S COMPLEMENT DATA FORMAT (±5V AND ±10V ONLY) The A/D converter translates applied analog voltages into 12-bit, two’s complement digital words. The full analog input range is divided into 4096 steps. The output code (0000h) is associated with a mid-range analog value of 0 Volts (ground). The formulas for calculating analog or digital values are given by: Analog Digital = Analog = Step x Digital Step Where: Analog = Applied voltage Digital = A/D Conversion Data Step = 0.
Analog Input BINARY FORMAT (0 TO +5V AND 0 TO +10V ONLY) The full analog input range is divided into 4096 steps. The output code (0000h) is associated with an analog input voltage of 0 Volts (ground). All codes are considered positive. The formulas for calculating analog or digital values are given by: Analog Digital = Analog = Step x Digital Step Where: Analog = Applied voltage Digital = A/D Conversion Data Step = 0.002441406 Volts (0 to +10V Range) 0.
USB 1.0 Interface USB 1.0 Interface A USB 1.0 (Universal Serial Bus) connector provides a common interface to connect a wide variety of keyboards, modems, mice, and telephony devices to the VSBC-6. With USB 1.0, there is no need to have separate connectors for many common PC peripherals. The USB 1.0 interface on the VSBC-6 is OHCI (Open Host Controller Interface) compatible, which provides a common industry software/hardware interface. Note The USB 1.0 interface must be enabled in CMOS Setup.
Opto 22 (Digital I/O) Interface Opto 22 (Digital I/O) Interface The VSBC-6 includes a 16-channel digital I/O interface. The digital lines are grouped as two 8bit bi-directional ports. The direction of each port is controlled by software, and each signal is pulled-up to +5V with a 10K ohm resistor.
Opto 22 (Digital I/O) Interface RACK POWER When jumper V7 is installed, up to 250 mA can be drawn from J10 pin 49 to power the Opto 22 interface rack or other external equipment. The power output is protected by a self resetting circuit breaker. Warning! If the I/O rack is powered by a separate external supply, the power jumper on the I/O rack or jumper V7 must be removed. SIGNAL DIRECTION The 16 I/O signals are divided into two 8-bit I/O ports.
Auxiliary Timer/Counter Channels Auxiliary Timer/Counter Channels The VSBC-6 includes three uncommitted 8254 type counter/timer channels for general application program use. Control signals for the three channels are available on connector J6. JUMPER CONFIGURATION Jumper V2 selects the clock source for channels 4 and 5.
PC/104 Expansion Bus PC/104 Expansion Bus The VSBC-6 will accept up to four PC/104 and/or three PC/104-Plus expansion modules. Both 3.3V and 5.0V modules are supported. ARRANGING THE STACK If PC/104-Plus modules will be used, they go on the stack first (closest to the VSBC-6 circuit board). The first module is called "slot 0", the next module is "slot 1", and the third module is "slot 2".
Memory and I/O Map Memory and I/O Map MEMORY MAP The lower 1 MB memory map of the VSBC-6 is arranged as shown in the following table. CMOS setup is used to choose between DRAM and PC/104 for three sections of memory from 0C0000h to 0EFFFFh. Various blocks of memory space between A0000h and FFFFFh can be shadowed. CMOS setup is used to enable or disable this feature.
Memory and I/O Map I/O MAP The following table lists the common I/O devices in the VSBC-6 I/O map. User I/O devices should be added in the 100h – 3FFh range, using care to avoid the devices already in the map as shown below.
Interrupt Configuration Interrupt Configuration The VSBC-6 has the standard complement of PC type interrupts. Ten non-shared interrupts are routed to the PC/104 bus, and up to four IRQ lines are automatically allocated as needed to PCI devices. There are no interrupt configuration jumpers. All configuration is handled through CMOS setup. The switches in the diagram below indicate the various CMOS Setup options. Closed switches show factory default settings.
Special Control Register Special Control Register SCR (READ/WRITE) 00E0h (or 01E0h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 LED Reserved REV Reserved COM1DIS COM2DIS ETHDIS WDOGEN Table 31: Special Control Register Bit Assignments Bit Mnemonic Description D7 LED Light Emitting Diode — Controls the programmable LED connector J7 LED = 0 Turns LED off. LED = 1 Turns LED on. D6 — D5 REV D4 — D3 COM1DIS COM1 Disable — Enables and disables COM1. COM1DIS = 0 Enables COM1.
Revision Indicator Register Revision Indicator Register REVIND (READ ONLY) 00E1h (or 01E1h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 PC6 PC5 PC4 PC3 PC2 PC1 PC0 REV0 This register is used to indicate the revision level of the VSBC-6 product. Bit Mnemonic D7-D1 PC6-PC0 D0 REV0 Description Product Code — These bits are hard coded to represent the product type. The VSBC-6 will always read as 1111111. Other codes are reserved for future products.
Map and Paging Control Register Map and Paging Control Register MPCR (READ/WRITE) 00E3H (or 01E3h via CMOS Setup) D7 D6 D5 D4 D3 D2 D1 D0 FPGEN Reserved SPGEN Reserved DPGEN PG2 PG1 PG0 Table 32: Map and Paging Control Register Bit Assignments Bit Mnemonic D7 FPGEN Description FLASH Paging Enable — Enables a 64K page frame from E0000h to EFFFFh. Used to gain access to the on-board FLASH memory. FPGEN = 0 FLASH page frame disabled. FPGEN = 1 FLASH page frame enabled.
Appendix A — Other References PC Chipset ALi Aladdin IV+ Chipset A Acer Laboratories Inc., (www.acerlabs.com) Ethernet Controller Standard Microsystems Corp., (www.smsc.com) LAN91C96 (formerly called SMC91C96) Video Controller 65550 Asiliant Technologies Inc., (www.Asiliant.com) A/D Converter Maxim 197 Maxim Integrated Products, (www.maxim-ic.com) Disk On Chip DOC2000 M-Systems Inc., (www.m-sys.com) PC/104 Specification PC/104 Resource Guide PC/104 Consortium, (www.controlled.
