Appearance: UsedFunctionality: WorkingDescription:============As pictured, a DTK386SX motherboard, model PPM-2031DS. Board has the 386SX CPU in a specialsocket, rather than usually soldered to the board. The CPU is rated for 25mhz,although the motherboard runs it at 20mhz. Includes 4MB of RAM. The board pre-datesIDE and only seems to only support MFM and RLL hard drives – with an IDE drivean error was received. System was still able to use the drive – just received afalse positive message. The battery leaked and was removed, area cleaned asbest as possible.Board can beupgraded and customized to your needs, please contact us.Specs and jumpersare available here: http://stason.org/TULARC/pc/motherboards/D/DTK-COMPUTER-INC-386-PPM-1631D-S-2031D-S-2531D-S.html#.VK7WoOl0yUk About Us:=========The ComputerPreservation Group is dedicated to the preservation of historical computers. Tohelp fund ongoing operations, select items are made available. To learn more,please visit our website: www.computerpreservation.com. Thank you for your support!Warranty andReturns:=====================We understand thatthere may be compatibility issues, space constraints, or it just doesn’t lookperfect. This item can be returned within 14-days for ANY reason. However,shipping to and from is not refundable. Shipping:=========- Local pickup isalso available at no cost. As a bonus, all local pickups will include abeverage of your choice ;)Stock#:13666PPM-1631D(S)/2031D(S)/2531D(S)Motherboard Settings and ConfigurationDTK COMPUTER, INC. PPM-1631D(S)/2031D(S)/2531D(S)Processor 80386SX Processor Speed 16/20/25MHz Chip Set DTK Max. Onboard DRAM 5MB Cache None BIOS DTK/AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX CONNECTIONS Purpose Location Purpose Location Power LED &keylock J2 Turbo LED J5 Turbo switch J3 Reset switch J6 Speaker J4 External battery J7 USER CONFIGURABLESETTINGS Function Jumper Position » BIOS type select27256 W7 pins 1 & 2closed BIOS type select27128 W7 pins 2 & 3closed » NPU disabled W8 Closed NPU enabled W8 Open » NPU mode selectsynchronous with CPU W10 Open NPU mode selectasynchronous with CPU W10 Closed » Battery type selectinternal W11 pins 2 & 3closed Battery type selectexternal W11 pins 1 & 2closed » Monitor type selectmonochrome W12 pins 1 & 2closed Monitor type selectcolor W12 pins 2 & 3closed DRAM CONFIGURATION Size Bank 0 P-0 Bank 1 P-1 Bank 2 Bank 3 512KB 1 (4) 44256 (2) 4464 NONE NONE NONE NONE 640KB 1 (4) 44256 (2) 4464 (4) 41256 (2) 4164 NONE NONE 1MB 1 (4) 44256 (2) 4464 (4) 44256 (2) 4464 NONE NONE 1.5MB 2 (4) 44256 (2) 4464 (4) 41256 (2) 4164 (2) 256K x 9 NONE 2MB 2 (4) 44256 (2) 4464 (4) 44256 (2) 4464 (2) 256K x 9 (2) 256K x 9 2MB 1 NONE NONE NONE NONE (2) 1M x 9 NONE 3MB 2 (4) 44256 (2) 4464 (4) 44256 (2) 4464 (2) 1M x 9 NONE 4MB 1 NONE NONE NONE NONE (2) 1M x 9 (2) 1M x 9 5MB 2 (4) 44256 (2) 4464 (4) 44256 (2) 4464 (2) 1M x 9 (2) 1M x 9 DRAM JUMPERCONFIGURATION Size W1 W2 W3 W4 W5 W6 512KB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 640KB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1.5MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 3MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 4MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 5MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note:Pins designatedshould be in the closed position.
