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==View or Print jumper settings using Fixedsys or New Courier fonts== GENOA TURBOEXPRESS 3-VL MOTHERBOARD - Bios ID string 40-0100-006156-00101111-080893-SIS461-P - 8-30 pin SIMM slots (1-64meg FPM DRAM) - 3-32bit VESA Local Bus slots - 8-16bit ISA slots - 64k-256k CACHE support in 8-28pin sockets + 1 TAG RAM - AMI 1993 Auto-Detect BIOS. - Green PC Connector - SiS 85C461 chipset - Supports 3.3v/5volt CPU's - ZIF 237pin CPU socket 3 which supports these processors: INTEL 80486SX/SX2,80486DX/DX2/DX3, Pentium Overdrive - Supports speeds of 20/25/33/40/50/66 MHz. - Manufactured by: GENOA SYSTEMS - website: http://www.genoasys.com Connector and Jumper Settings ----------------------------- The TurboExpress 486VL motherboard has two jumpers (JP7, JP6) for the CPU type selector, and two jumpers (JP11, JP12) for the Cache Size selection. Connectors are also provided for the front panel interface between the system board and the computer chassis. NOTE: JP2 and JP3 are used for the optional power saving feature on the TurboExpress 486VL - 3G version. Front Panel Speaker Connector (JP15) ------------------------------------ Connector JP15 is a 4-pin single in-line BERG strip which provides a front panel speaker connection. The pin assignments are: JP15 Pin# Assignment 1 Speaker Data 2 N.C. 3 Ground 4 +5 V Front Panel Keylock / Power LED Connector (JP16) ------------------------------------------------ Connector JP16 is a 5-pin single in-line BERG strip which provides a front panel keylock and power LED connection. When it is connected to a lock on your system case, you can enable or disable the keyboard by switching the key. The pin assignments are: JP16 Pin# Assignment 1 LED Power 2 N.C. 3 Ground 4 Keyboard Inhibit 5 Ground Front Panel Reset Connector (JP17) ---------------------------------- The reset button connector is a 2-pin single in-line BERG strip. It is used to reboot the system and will allow safe re-initialization of the system at any time. The connector should always be set in the OFF position, otherwise the system will continually reset itself. JP17 Pin# Assignment 1 Ground 2 Reset Strobe Front Panel Turbo LED Connector (JP18) -------------------------------------- Connector JP18 is a 2-pin single in-line BERG strip. It can be connected to an LED display indicating the CPU speed. The display lights up when the CPU is running at full speed. JP18 Pin# Assignment 1 Anode 2 Cathode Front Panel Turbo Connector (JP19) ---------------------------------- Connector JP19 is a 2-pin single in-line BERG strip. It is the connector for the 'Turbo' processor speed switch, which allows you to switch between system speeds. JP19 Pin# Assignment 1 Ground 2 Turbo Control Hardware CMOS Setup Connector (JP21) ------------------------------------ The hardware CMOS setup Connector is a 3-pin connector. To discharge the CMOS static memory (clear the CMOS setup settings), remove the jumper shunt from pin 2 and 3 of JP21 (default setting), and place it at the position of pin 1 and pin 2 of JP21 for 5 seconds, then return it ot the original position. The jumper selections are: Selections JP21 Default 2-3 Discharge 1-2 Power Supply Connector (PW1) ---------------------------- There is a power supply connector on-board. The pin assignments are: PW1 Pin# Assignment PW1 Pin# Assignment 1 Power Good 7 Ground 2 +5 VDC 8 Ground 3 +12 VDC 9 -5 VDC 4 -12 VDC 10 +5 VDC 5 Ground 11 +5 VDC 6 Ground 12 +5 VDC Cache Memory Configuration -------------------------- There are two jumpers to be set for the cache memory selection. For 64K cache, install 8Kx8 SRAM in locations U27, U23, U24, U25, U26, U33, U34, U35, and U36. For 128K cache, install 8Kx8 SRAM in location U27, and 32Kx8 SRAM in locations U23, U24, U25, and U26. For 256K cache, install 32Kx8 SRAM in location U27, and 32Kx8 SRAM in locations U23, U24, U25, U26, U33, U34, U35, U36. Selection JP11 JP12 64K Open Open 128K 1-2 Close 256K 2-3 Close External Battery (JP1) ---------------------- The TurboExpress 486VL motherboard provides one external battery supply connector. The pin assignments are: JP1 Pin# Assignment 1 Battery Positive 2 No Connection 3 Ground 4 Ground Keyboard Connector (KB1) ------------------------ The keyboard connector is a 5-pin DIN connector. This connector consists of a 90-degree printed circuit board PCB mounting. KB1 Pin# Assignment 1 Keyboard Clock 2 Keyboard Data 3 Spare 4 Ground 5 +5 V CPU Type Selection ------------------ The TurboExpress 486VL motherboard can accommodate either the Intel 486DX, 486DX2, 486DX3, 486SX, 487SX, 486 OverDrive, or Pentium OverDrive. There are two jumpers to be set for the microprocessor selection. Configuration of the correct CPU setting will allow compatibility with various low-end and high-end applications. The jumper settings are: CPU Type JP7 JP8 486DX/486DX2/486DX3 1-2,3-4 1-2 486 OverDrive 168-pin 1-2,3-4 1-2 486 OverDrive 169-pin 1-2,3-4 2-3 Pentium OverDrive 1-2,3-4 2-3 486SX 2-3 Open 487SX/486SX2 1-2,3-4 2-3 CPU Clock Selection ------------------- The TurboExpress 486VL motherboard uses a CPU frequency generator to generate the clock instead of an oscillator. There are three jumpers to be set for the CPU clock selection. CPU Clock JP4 JP5 JP6 DX-50 MHz Open Close Open DX-40 MHz Close Open Open DX-33/DX2-66 MHz Open Close Close DX-25/DX2-50 MHz Close Open Close DX-20 MHz Close Close Open VESA Local-Bus Identifier Jumpers (JP13, JP14) ---------------------------------------------- The identifier jumpers (JP13, JP14) allow the VL-Bus slave to identify the speed of the host CPU. CPU Speed JP13 JP14 <= 33 MHz Open Open > 33 MHz Close Close ===================End of Genoa TurboExpress VL Data==================== |
