Intel386™ 302-20 Motherboard PLEASE NOTE: This product is no longer being manufactured by Intel. THESE DOCUMENTS ARE PROVIDED FOR HISTORICAL REFERENCE PURPOSES ONLY AND ARE SUBJECT TO THE TERMS SET FORTH IN THE "LEGAL INFORMATION" LINK BELOW. For information on currently available Intel products, please see www.intel.com and/or developer.intel.com End of Interactive Support Intel is announcing the end of interactive support for the Intel386™ 302-20 Motherboard. See the End of Interactive Support Announcement for details. DRAM Timing Control Jumper Name Pins 1-2 Pins 2-3 J2/J8 No delay of address multiplexer Delay address multiplexer by 10 ns1 J3/J9 Adjust CAS timing during memory ready by 10 ns Adjust CAS timing during memory ready by 20 ns1 J4/J10 Adjust CAS timing during memory read by 30 ns Adjust CAS timing during memory read by 40 ns J5/J11 Adjust CAS timing during memory wite by 50 ns Adjust CAS timing during memory wite by 60 ns J6/J12 Adjust CAS timing during memory write by 70 ns1 Adjust CAS timing during memory write by 80 ns J7/J13 Adjust CAS timing during memory write by 90 ns Adjust CAS timing during memory write by 100 ns MCLK2 Phase Adjustment Jumper Name Pins 1-2 Pins 2-3 J14 Adjust MCLK2 by 1 gate1 No adjustment J15 Adjust MCLK2 by 1 gate1 No adjustment Pipeline Control Mode Jumper Name Pins 1-2 Pins 2-3 J17 Select pipeline cycle1 No pipeline cycle LED Indicator Jumper Name Pins 1-2 Pins 2-3 J16 LED used as power-on indicator1 LED used as smart mode indicator Coprocessor Option Jumper Name Pins 1-2 Pins 2-3 J18 Select numeric processor No numeric processor1 Memory Parity Check Jumper Name Pins 1-2 Pins 2-3 J19 Disable memory parity check Enable memory parity check1 Eprom Type Jumper Name Pins 1-2 Pins 2-3 J20 Select the 512 EPROM Select the 256/128 EPROM1 J21 Select 512/256 EPROM1 Select the 128 EPROM SW1 Default Switch Settings Switch On/Off Preset Value Function SW1-1 OFF COM1=Serial Port 1 COM2=Serial Port 2 Serial port assignment SW1-2 SW1-3 OFF OFF COM1 Enabled COM2 Enabled Enable/disable serial port SW1-4 OFF Enable Parallel port enable SW1-5 OFF Port Address 378H Selected Port address selection SW1-6 OFF Disabled Printer interupt to IRQ5 SW1-7 OFF Disabled Printer interupt to IRQ7 SW1-8 OFF Enabled RAM BIOS selection SW1-9 OFF Monochrome Display type selection SW1-10 ON Disabled Enable/disable smart mode SW2 Switch Settings Total Memory(MB) Bank A Bank B Switch ON 2 256k x 9 none SW2-2 4 256k x 9 256k x 9 SW2-2 SW2-3 SW2-4 10 256k x 9 1M x 9 SW2-2 SW2-4 8 1M x 9 none   10 1M x 9 256k x 9 SW2-3, SW2-4 16 1M x 9 1M x 9 SW2-4 ^ 80 ns Minimum Speed for Installed Systems 1Factory Default

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