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8-bit 286 Accelerator / OverDrive Card HotShot/286 Made by AST in 1987 8-bit ISA card has an Intel 286-10 CPU and Intel 287-10 Math CoPro currently using a 24MHz plug-in clock crystal for a over-clocked speed of 12MHz if you have any problems then consider swapping in a 20MHz crystal for the default 10MHz CPU speed PROBLEM: the ribbon cable that goes to the CPU socket on the motherboard is NOT ORIGINAL and does not support concurrent 8088 CPU so the current configuration does not allow on-the-fly selection between the original 8088 CPU and the 286 overdrive we also recommend that you fashion a foil sheath for the cable, ie. wrap it in aluminum foil and cover with non-conductive tape to reduce noise, it works fine as it is but the original cable had some such thick insulation this card is tested in a genuine IBM 5150 PC and runs fine we have added a high quality 40-pin adapter that plugs on top of the more delicate pins and adds thick gold-plated pins that plug into the motherboard this serves two purposes: it protects the main connector and preserves your investment it provides a much more reliable connection for the CPU the card has at least 64k cache onboard, currently it is disabled because configuring the memory page(s) can be a time-consuming activity depending upon how many other upgrade cards are in the computer. 8-bit ISA card will work in IBM PC 5150, Portable 5155, XT 5160 includes 2-page print out of switch settings USA BUYERS : No import fees or taxes. Shipping includes tracking and insurance. CANADIAN BUYERS : Must pay GST/HST so wait for an invoice before paying. No local pickup. OVERSEAS BUYERS : (Europe/Asia/Africa/SouthAmerica/Australia): STANDARD shipping does not provide tracking or insurance. We do not misrepresent the import value of items. ZOZ-003- |