UMC

Part NumberCodeCPUChipsetI/OTurboNoteShould work withVersions foundDownloads
V037B301UMC_301386DXUMC82C48x WriteBack Rev. 0None1.65 UMC_301.BIN
V037B302UMC_302386DXUMC82C48x WriteBack Rev. A & Rev.BNone1.65 UMC_302.BIN
V037B304UMC_304386DXUMC82C48x WriteBack Rev. A & Rev.BNoneModula Tech 3FLUD1.65 UMC_304.BIN
V037B305UMC_305386DXUMC82C48x WriteBack Rev. A & Rev.BUM82C206FUnknown M351 386DX/486DLC ROLM Systems (Siemens) UM386-RModula Tech 3FLUD1.44 UMC_305.BIN
V057B310UMC_310386SXUMC82C330 TwinstarNoneNo Image
V057B314UMC_314386SXUMC82C330 TwinstarNoneTurbo LED and hotkeys, active lowNo Image
V057B315UMC_315386SXUMC82C330 TwinstarNoneTurbo LED and hotkeys, active highNo Image
V037B401UMC_401486UMC82C48x WriteBack Rev. 0NoneCache Computers CACHE BAT 486 (Model 319)1.0E, 1.65 UMC_401.BIN UMC_401.BIN
V037B402UMC_402486UMC82C48x WriteBack Rev. A & Rev.BNoneDFI 486-33/50UCE, 486DX2-50UCE1.65 UMC_402.BIN
V037B403UMC_403486UMC82C48x WriteBack Rev. A & Rev.BNoneNO Turbo (for 486SX 2X-OSC)1.65 UMC_403.BIN
V037B404UMC_404486UMC82C48x WriteBack Rev. A & Rev.BNoneTurbo LED and hotkeys, active low1.65 UMC_404.BIN
V037B405UMC_405486UMC82C48x WriteBack Rev. A & Rev.BNoneTurbo LED and hotkeys, active high1.65 UMC_405.BIN
V037B406UMC_406486UMC82C48x WriteBack Rev. A & Rev.BNoneCache state only, active low1.65 UMC_406.BIN
V037B407UMC_407486UMC82C48x WriteBack Rev. A & Rev.BNoneCache state only, active high1.65 UMC_407.BIN
V037B40AUMC_40A486UMC82C48x WriteBack Rev. BNoneShould be run with 2WS to avoid crashes1.65 UMC_40A.BIN
V037B40BUMC_40B486UMC82C48x WriteBack Rev. BNoneNO Turbo (for 486SX 2X-OSC)Should be run with 2WS to avoid crashes1.65 UMC_40B.BIN
V037B40CUMC_40C486UMC82C48x WriteBack Rev. BNoneTurbo LED and hotkeys, active lowShould be run with 2WS to avoid crashes1.65 UMC_40C.BIN
V037B40DUMC_40D486UMC82C48x WriteBack Rev. BNoneTurbo LED and hotkeys, active highShould be run with 2WS to avoid crashesNo Image
V037B40EUMC_40E486UMC82C48x WriteBack Rev. BNoneCache state only, active low. NO turbo, for 486SX 2X-OSCShould be run with 2WS to avoid crashesNo Image
V037B40FUMC_40F486UMC82C48x WriteBack Rev. BNoneCache state only, active high. NO turbo, for 486SX 2X-OSCShould be run with 2WS to avoid crashesNo Image
V037B40GUMC_40G486UMC82C48x WriteBack Rev. A & Rev. BNonefor L-Bus M/Boards that hang at PostCode 1D (PAL bug causes Ready-Hang on WEITEK access)Pine Technology PT-426V1.65 UMC_40G.BIN
V079B410UMC_410386/486/Cx486UMC82C491/493 Single-Chip

Octek Hippo COM 1.xOctek Hippo COM 2.xU-Board TK-82C491

Octek UMC486-01 REV 1.0

1.5 UMC_410.BIN UMC_410.BIN
V079B412UMC_412386/486/Cx486UMC82C491/493 Single-ChipOctek Hippo COM 1.xOctek Hippo COM 2.x1.65 UMC_412.BIN