OCEAN MOTHERBOARDS JUMPER SETTINGS. 1996, Sept 20. 486 Board DCA2 486 VLB Board ver 2.25 DCA1 486 VLB Board ver 1.1 *NOT FOUND Hippo-15 486 PCI / ISA Board ver 1.2x Hippo-12 486 PCI / VLB/ ISA Board ver. 1.01 Hippo-10 486 VLB Board ver. 1.21 Pentium PCI Board Rhino-9 Pentium PCI Board ver. 1.12, 1.3 Rhino-6VX Pentium PCI Board ver. 1.1, 1.2, 1.3, 1.4 Rhino-6 Pentium PCI Board ver.1.01, 1.11 Rhino-5 Pentium PCI Board ver. 1.16, 1.17,1.22 Rhino-5 Pentium PCI Board ver. 1.11, 1.12,1.13, 1.15 -------------------------------------------------------------------------- Hippo DCA2 486 board - rev 2.25 JUMPER SETTINGS CPU TYPE JP3 JP4 JP5 JP6 JP7 JP8 JP10 JP11 JP13 JP14 JP15 Intel 486SX-25 1-2 1-2 1-2 open open open 2-3 2-3 2-3 2-3 2-3 Intel 486SX-33 2-3 2-3 1-2 open open open 2-3 2-3 2-3 2-3 2-3 486SL SX-33 Intel 486DX-25 1-2 1-2 1-2 open open 1-2 1-2 2-3 2-3 2-3 2-3 486DX2-50 3-4 486DX4-75 *Intel 486DX-33 2-3 2-3 1-2 open open 1-2 1-2 2-3 2-3 2-3 2-3 486DX2-66 3-4 486DX4-100 P24T 486SL DX-33 486SL DX2-66 AMD 486DX4-100 AMD 5x86-133 The Same as the INTEL DX/2-66* with JP-26 (1-2) and JP-17 (1,2) AMD 486DX2-66 WB Intel 487-25 1-2 1-2 1-2 open open 2-3 1-2 2-3 2-3 2-3 2-3 AMD 486DX2-50 3-4 Intel 487-33 2-3 2-3 1-2 open open 2-3 1-2 2-3 2-3 2-3 2-3 3-4 AMD 486DX2-66 2-3 2-3 1-2 open open 1-2 1-2 2-3 2-3 2-3 2-3 3-4 AMD 486DX2-50 1-2 1-2 1-2 open open 2-3 1-2 2-3 2-3 2-3 2-3 3-4 Cyrix 486DX-33 2-3 2-3 1-2 open 2-3 1-2 1-2 2-3 2-3 2-3 2-3 3-4 Cyrix 486DX2-50 1-2 1-2 1-2 open 1-2 1-2 1-2 2-3 2-3 2-3 2-3 3-4 Cyrix 486DX2-66 2-3 2-3 1-2 open 1-2 1-2 1-2 2-3 2-3 2-3 2-3 3-4 Remark: For AMD 486DX2-66 (3.45V, write-through) : JP17 1-2 JP26 2-3 Jumper Description Setting Option JP1 CPU clock speed select 1-2 25MHz 2-3 33MHz JP4 CPU clock speed select 1-2 25MHz 2-3 33MHz JP7 Cyrix CPU type select 1-2 2 x CLK 2-3 1 x CLK open JP8 Floating point error pin select 1-2 486DX/DX2, 487, 486SX JP9 VL bus operation 2-3 nonsynch. open synch. JP10 Non-maskable interrup select 1-2 486DX/DX2, 487, 486SX 2-3 3-4 JP11 CPU bus speed type selection 1-2 CPU greater than 33MHz 2-3 CPU less or equal to 33MHz JP12 VL bus speed type selection 1-2 1 wait state 2-3 0 wait state JP14 SL-CPU select 2-3 SL JP19 CMOS discharge 1-2 discharge 2-3 preserve JP21 Color / Mono display select 1-2 color 2-3 mono JW1 VL bus operation 1-2 nonsynch. 2-3 synch. -------------------------------------------------------------------------- Hippo DCA1 486 board - rev 1.1 In pages 2-5 and 2-6, CPU type and CPU clock multiple are negligible. CPU Type TYPE JP6 JP8 JP9 JP24 JP17 Intel DX/DX2/DX4 1-2 2-3 2-3 open 1-2 Intel 486SX 2-3 open 1-2 open 1-2 Intel 487SX 1-2 1-2 2-3 open 1-2 AMD Enhanced DX2/66 WT/WB 1-2 2-3 2-3 2-3 1-2 AMD Enhanced DX4-100 WB 1-2 2-3 2-3 2-3 1-2 AMD Enhanced DX4-100 WT 1-2 2-3 2-3 1-2 1-2 Cyrix DX2/DX4 1-2 2-3 2-3 open 1-2 Cyrix 5x86/100 1-2 2-3 2-3 open 1-2 AMD 5x86/133 1-2 2-3 2-3 2-3 3-4 -------------------------------------------------------------------------- Hippo-12 486 board - rev 1.01 CPU TYPE JP1 JP2 JP18 JP19 JP20 JP24 JP25 JP26 JP30 JP31 JP32 JP34 JP35 JP36 JP37 Intel 1-2 1-2 1-2 3-4 open open open open 1-2 open open open open open open 486DX/DX2 3-4 Intel 1-2 1-2 2-3 open open open open open 1-2 open open open open open open 486SX Intel 1-2 1-2 1-2 2-3 open 2-3 1-2 open 3-4 open 2-3 2-3 1-2 2-3 open P24T 3-4 4-5 5-6 Cyrix 2-3 1-2 2-3 open open 1-2 2-3 open 3-4 open 2-3 1-2 2-3 1-2 open CX486S 3-4 Cyrix 2-3 1-2 1-2 3-4 open 1-2 2-3 open 3-4 open 2-3 1-2 2-3 1-2 open CX486D 3-4 3-4 UMC-U5S 1-2 2-3 2-3 1-2 open open 3-4 open 1-2 open 1-2 open open open open 3-4 Intel 1-2 1-2 2-3 open open 2-3 open open 3-4 open 2-3 2-3 open open open SL 486SX 4-5 Intel SL 1-2 1-2 1-2 3-4 open 2-3 open open 3-4 open 2-3 2-3 open open open DX/DX2/DX4 3-4 4-5 AM486DXL 1-2 2-3 1-2 1-2 open open 3-4 open 1-2 open 1-2 open open open open AM486DX4 3-4 3-4 UMC-U5DS AM486DX2 1-2 1-2 1-2 3-4 open 2-3 open open 3-4 open 2-3 2-3 open open open AM486DX4 3-4 4-5 P24D 1-2 1-2 1-2 3-4 2-3 2-3 open 1-2 3-4 1-2 2-3 2-3 open open 1-2 3-4 4-5 AM486DX2 1-2 2-3 1-2 1-2 1-2 open 3-4 open 1-2 open 1-2 open open open open 3-4 3-4 AMD 1-2 1-2 1-2 3-4 2-3 2-3 open 1-2 3-4 1-2 2-3 2-3 open open 1-2 5X86-133 3-4 4-5 Cyrix5x86 1-2 1-2 1-2 3-4 open 2-3 open 1-2 3-4 1-2 2-3 2-3 open open open 3-4 4-5 Remark: To support AMD 5X86-133 CPU: BIOS Rev.095-036 (Sept 26, 1995) is required and JP33 = 2-3. To support Cyrix 5x86-100 CPU: BIOS Rev.095-036 (Sept 26, 1995) is required and JP33 = open. CPU Clock Multiple JP33 Intel 486DX4 / AMD Enhance 486DX4 open CLK 3x 1-2 CLK 2.5x 2-3 CLK 2x Clock Selection JP16 Clock Rate CPU speed 1-2 50MHz DX50 1-2,3-4,5-6 33MHz DX33, DX2-66, DX4-100 3-4,5-6 40MHz DX40, DX2-80 5-6 25MHz DX25, DX2-50 CPU Voltage TYPE CPUVCC JP41 JP42 JP43 JP44 JP45 JP46 AUTO 5V/3.45V open open open open 1-2 open FIXED 5V open open open open open 1-2 FIXED 4V open open open 1-2 open open FIXED 3.8V open open 1-2 open open open FIXED 3.6V open 1-2 open open open open FIXED 3.45V open open open open open open FIXED 3.3V 1-2 open open open open open Cache Configuration For 33MHz clock, the tag RAM 32Kx8 is used 20ns, and 40MHz or 50MHz system, 15ns RAM is used (U10). 512K 256K 256K 128K 128Kx8 32Kx8 64Kx8 32Kx8 U1,U3,U6,U8 U1-U4,U6-U9 U1,U3,U6,U8 U1,U3,U6,U8 JP5 2-3 1-2 2-3 2-3 JP14 1-2,3-4 1-2 1-2 open On-board IDE JP11 IDE 1-2 enabled 2-3 disabled Slot Configuration JP39 Close VL slot clock greater than 33.333MHz Open VL slot clock less than or equal to 33.333MHz JP40 Close 1 WS VL-write cycle Open 0 WS vl-write cycle ----------------------------------------------------------------- Hippo-10 486 board - rev 1.21 CPU TYPE JP32 JP33 JP34 JP35 JP36 JP37 JP57 486SX open 2-3 open open open 2-3 open 486DX / DX2 1-2 1-2 open open open 2-3 open 3-4 Intel SL 1-2 1-2 1-2 1-2 5-6 1-2 open 486DX/DX2/DX4 3-4 3-4 AMD Enhanced AM486DX/DX2/DX4 Intel 1-2 1-2 1-2 1-2 3-4 1-2 open P24D 3-4 3-4 4-5 5-6 4-5 Intel 2-3 1-2 1-2 1-2 5-6 1-2 open P24T 3-4 3-4 Cyrix SX open 2-3 2-3 1-2 2-3 1-2 open 4-5 3-4 4-5 3-4 5-6 5-6 Cyrix DX/DX2 1-2 1-2 2-3 1-2 2-3 1-2 open 3-4 3-4 4-5 3-4 5-6 5-6 UMC CPU 3-4 2-3 open 2-3 1-2 2-3 open AM486DX2 1-2 1-2 open 2-3 1-2 2-3 2-3 3-4 3-4 AM486DX4 1-2 1-2 open 2-3 1-2 2-3 1-2 3-4 3-4 Cyrix 5x86/100 1-2 1-2 1-2 1-2 3-4 1-2 open 3-4 3-4 5-6 4-5 AM5x86/133 1-2 1-2 1-2 1-2 3-4 1-2 open 3-4 3-4 5-6 ** Remark: Pls update BIOS rev.096003 to support 5x86 CPU. CPU Clock Multiple JP27 TYPE open 1-2 2-3 Intel 486dx4 3X 2.5X 2X AMD Enhanced DX4 3X n/a n/a AM5x86 n/a n/a 4X Suspend Mode JP43 open Normal* close System Suspend ------------------------------------------------------------------------------ Rhino-9 586 board - rev 1.12, 1.3 CPU Voltage Core Selection For Rhino-9 rev 1.12: CPU Core Voltage CPU Core Voltage JP16 Intel P55C CPU 2.5V 2-3 Intel P54C, P54CQS or 3.3V 1-2 Intel P54CS, 54CTB, or AMD 5k86 P75-P100 Cyrix 6x86 Full Spec/C-Spec(028) 3.5V open For Rhino-9 rev 1.3: CPU Core Voltage CPU Core Voltage JP9 JP10 JP11 JP15 JP16 JP17 JP18 Intel P55C CPU 2.8V 2-3 2-3 2-3 2-3 2-3 2-3 2-3 Intel P54C, P54CQS or 3.5V(VRE) 1-2 1-2 1-2 2-3 1-2 1-2 1-2 Intel P54CS, 54CTB, or Cyrix 6x86 or AMD 5k86 P75-P100 Note : Be careful to select the appropriate Core voltage for different CPU. Improper Core voltage supplied to CPU may result in "PERMENENT DAMAGE" to CPU! CPU Type (CPU/L2 Cache BUS Speed) Settings TYPE CPU Clock JP28 JP29 JP8 JP25 Intel P54C-75 50MHz 2-3 2-3 1-2 1-2 Cyrix 6x86-P120+(100Mhz) 50MHz 2-3 2-3 1-2 1-2 AMD 5k86-P75(75Mhz) 50MHz 2-3 2-3 1-2 1-2 Intel P54C-90 60MHz 1-2 2-3 1-2 2-3 Intel P54C-120 60MHz 1-2 2-3 1-2 2-3 Intel P54C-150 60MHz 1-2 2-3 1-2 2-3 Intel P54C-180 60MHz 1-2 2-3 1-2 2-3 Cyrix 6x86-P150+(120Mhz) 60MHz 1-2 2-3 1-2 2-3 AMD 5k86-P90(90 Mhz) 60MHz 1-2 2-3 1-2 2-3 Intel P54C-100 66Mhz 2-3 1-2 2-3 2-3 Intel P54C-133 66Mhz 2-3 1-2 2-3 2-3 Intel P54C-166 66Mhz 2-3 1-2 2-3 2-3 Intel P54C-200 66Mhz 2-3 1-2 2-3 2-3 Cyrix 6x86-P166(133Mhz) 66Mhz 2-3 1-2 2-3 2-3 AMD 5k86-P100(100Mhz) 66Mhz 2-3 1-2 2-3 2-3 CPU Clock Multipler JP2 JP3 P54C P54CS P54CS P55C Cyrix6x86 P54CQS B-STEP C-STEP 2-3 2-3 reserved reserved x2.5 x2.5 reserved 1-2 2-3 reserved reserved reserved reserved reserved 2-3 1-2 x2 x2 x2 x2 x2 1-2 1-2 x1.5 x1.5 x1.5 reserved reserved Multiplier selection based on CPU type TYPE JP2 JP3 Intel P54C-75 1-2 1-2 Intel P54C-90 1-2 1-2 Intel P54C-100 1-2 1-2 Intel P54C-120 2-3 1-2 Intel P54C-133 2-3 1-2 Intel P54C-150 2-3 2-3 Intel P54C-166 2-3 2-3 Intel P54C-180 1-2 2-3 Intel P54C-200 1-2 2-3 Cyrix 6X86-P120+(100MHz) 2-3 1-2 Cyrix 6X86-P150+(120MHz) 2-3 1-2 Cyrix 6X86-P166+(133MHz) 2-3 1-2 AMD 5k86-P75(75Mhz) 1-2 1-2 AMD 5k86-P90(90Mhz) 1-2 1-2 AMD 5k86-P100(100Mhz) 1-2 1-2 External Cache(L2 cache) setting Async Cache/ Syn Cache Size For Rhino-9 rev 1.12, require Sync. Cache Module Ver C Octek rev.101 w/o Tag Ram Total Cache Size JP4 JP5 JP6 JP7 JP12 0KB 1-2 1-2 1-2 1-2 1-2 256KB 2-3 1-2 1-2 1-2 1-2 512KB 1-2 2-3 2-3 2-3 2-3 For Rhino-9 rev 1.3, require Sync. Cache Module Ver C Coast 3.0 w/o Tag Ram* Total Cache Size JP4 JP5 JP6 JP7 JP12 JP1* 0KB 1-2 1-2 1-2 1-2 1-2 256KB 2-3 1-2 1-2 1-2 1-2 512KB open open open open 2-3 2-3 CPU Fan Voltage Select JP1(Rhino-9 rev 1.12) JP35(Rhino-9 rev 1.3) +5V 1-2 1-2 +12V 2-3 2-3 PS/2 Mouse support JP49 JP43 JP44 Enabled 1-2 2-3 2-3 Disabled 2-3 1-2 1-2 Power Good Signal Select JP42 External Power Good 1-2 On-board Power Good 2-3 CMOS discharge JP21 Preserve CMOS 1-2 Clear CMOS 2-3 Battery Selec JP23 On-board Battery 1-2 External Battery 2-3 --------------------------------------------------------------------------- Rhino-6VX 586 board - rev 1.1, 1.2, 1.3, 1.4 CPU Voltage Core Selection For Rhino6VX rev 1.1, 1.2* : CPU Type CPU Core Voltage JP40-JP45 JP49 Intel P54C, P54CQS, P54CS or 3.3V 1-2 2-3 Cyrix 6x86, AMD 5K86 Intel P55C CPU 2.5V 2-3 1-2 For Rhino6VX rev 1.3, 1.4 : CPU Type CPU Core Voltage JP52 Intel P54C, P54CQS or 3.3V 3-4 P54CS, AMD 5K86 Cyrix 6x86(no marking, (016)3.3v) Cyrix 6x86((028), 3.3v or 3.52v) 3.5V(VRE) 5-6 Note: Rhino6VX 1.2 has above jumpers soldered on the board, so there is only one core voltage setting available, which is 3.3v. CPU Type TYPE CPU Clock JP4 JP5 JP8 JP9 JP10 Intel P54C-75 50Mhz 1-2 1-2 2-3 2-3 1-2 Cyrix 6x86-P120+ (100Mhz) 50Mhz 2-3 1-2 2-3 2-3 1-2 AMD 5K86-P75 (75Mhz) 50Mhz 1-2 1-2 2-3 2-3 1-2 Cyrix 6x86-P133+ (110Mhz) 55Mhz 2-3 1-2 1-2 1-2 1-2 Intel P54C-90 60Mhz 1-2 1-2 1-2 2-3 2-3 Intel P54C-120 60Mhz 2-3 1-2 1-2 2-3 2-3 Intel P54C-150 60Mhz 2-3 2-3 1-2 2-3 2-3 Intel P54C-180 60Mhz 1-2 2-3 1-2 2-3 2-3 Cyrix 6x86-P150+ (120Mhz) 60Mhz 2-3 1-2 1-2 2-3 2-3 AMD 5K86-P90 (90Mhz) 60Mhz 1-2 1-2 1-2 2-3 2-3 Intel P54C-100 66MHz 1-2 1-2 2-3 1-2 2-3 Intel P54C-133 66Mhz 2-3 1-2 2-3 1-2 2-3 Intel P54C-166 66Mhz 2-3 2-3 2-3 1-2 2-3 Intel P54C-200 66Mhz 1-2 2-3 2-3 1-2 2-3 Cyrix 6x86-133 (P166+) 66Mhz 2-3 1-2 2-3 1-2 2-3 AMD 5K86-P100(100Mhz) 66MHz 1-2 1-2 2-3 1-2 2-3 External Cache (L2 cache) setting Sync Cache size selection TYPE JP16 JP50 256K cache using on board 256K SRAM open 2-3 256K cache using 256K cache module w/o Tag Ram* 1-2 open 512K cache using on board 512K SRAM(4pcs PBSRAM) 2-3 1-2 512K cache using on board 512K SRAM(2pcs PBSRAM) 2-3 2-3 512K cache using on board 256K and 256K cache module w/o Tag Ram 2-3 1-2 512K cache using on board 512K cache module w Tag Ram(4pcs PBSRAM) 2-3 open Note: Neither U41 nor U43 should be installed in this case. On board tag RAM U10 is used. If 256K cache module contains a Tag RAM, U10 need not be installed. PS/2 Mouse support TYPE JP31 JP32 JP33 Enabled 1-2 2-3 2-3 Disabled 2-3 1-2 1-2 Power Good Signal Select JP27 External Power Good 1-2 On-board Power Good 2-3 CMOS discharge JP7 Preserve CMOS 1-2 Clear CMOS 2-3 Battery Select JP6 On-board Battery 1-2 External Battery 2-3 ------------------------------------------------------------------ Rhino-6 586 board - rev 1.01, 1.11 CPU Type (CPU/L2 Cache BUS Speed) Settings TYPE CPU Clock JP8 JP9 JP10 Intel P54C-75 50Mhz 2-3 2-3 1-2 Cyrix 6x86-P120+ (100Mhz) 50Mhz 2-3 2-3 1-2 AMD 5K86-P75 (75Mhz) 50Mhz 2-3 2-3 1-2 Intel P54C-90 60Mhz 1-2 2-3 2-3 Intel P54C-120 60Mhz 1-2 2-3 2-3 Intel P54CS-150 60Mhz 1-2 2-3 2-3 Intel P54C-180 60Mhz 1-2 2-3 2-3 Cyrix 6x86-P150+ (120Mhz) 60Mhz 1-2 2-3 2-3 AMD 5K86-P90 (90Mhz) 60Mhz 1-2 2-3 2-3 Intel P54C-100 66MHz 2-3 1-2 2-3 Intel P54C-133 66Mhz 2-3 1-2 2-3 Intel P54CS-166 66Mhz 2-3 1-2 2-3 Intel P54CS-200 66Mhz 2-3 1-2 2-3 Cyrix 6x86-133 (P166+) 66Mhz 2-3 1-2 2-3 AMD 5K86-P100 (100Mhz) 66Mhz 2-3 1-2 2-3 Clock Multiplier P54C P54CS P54CS P55C JP4 JP5 P54CQS B-STEP C-STEP 2-3 2-3 reserved reserved x2.5 x2.5 1-2 2-3 reserved reserved reserved reserved 2-3 1-2 x2 x2 x2 x2 1-2 1-2 x1.5 x1.5 x1.5 reserved Multiplier selection based on CPU type TYPE JP4 JP5 Intel P54C-75 1-2 1-2 Intel P54C-90 1-2 1-2 Intel P54C-100 1-2 1-2 Intel P54C-120 2-3 1-2 Intel P54C-133 2-3 1-2 Intel P54C-150 2-3 2-3 Intel P54C-166 2-3 2-3 Intel P54C-180 1-2 2-3 Intel P54C-200 1-2 2-3 Cyrix 6x86-100 (P120+) 2-3 1-2 Cyrix 6x86-120 (P150+) 2-3 1-2 Cyrix 6x86-166 (P133+) 2-3 1-2 AMD 5K86-P75 (75Mhz) 1-2 1-2 AMD 5K86-P90 (90Mhz) 1-2 1-2 AMD 5K86-P100(100Mhz) 2-3 1-2 External Cache (L2 cache) setting Async Cache / Sync Cache size selection TYPE JP11 256k 2-3 512k open 0k open Async Cache / Sync Cache size TYPE JP13 JP12 JP16 0K 1-2 1-2 1-2 256KB 1-2 2-3 1-2 512KB 2-3 1-2 2-3 Voltage Source for Asynchronous L2 Cache Note : Theses Jumpers are for Async On-board Cache ony and have no effect on COAST Modules TYPE JP2 JP3 JP17 JP18 +5V supply 2-3 2-3 2-3 2-3 +3.3V supply 1-2 1-2 1-2 1-2 PS/2 Mouse support TYPE JP31 JP32 JP33 Enabled 1-2 2-3 2-3 Disabled 2-3 1-2 1-2 Printer Port Interrupt TYPE JP25 IRQ5 1-2 IRQ7 2-3 ------------------------------------------------------------------------ Rhino-5 586 board - rev 1.16, 1.17, 1.22 CPU Type TYPE CPU Clock JP29 JP30 Intel P54C-75 50MHz 2-3 2-3 Cyrix 6x86-100 Intel P54C-90 60MHz 1-2 2-3 Intel P54C-120 Intel P54CS-150 Intel P54C-100 66MHz 2-3 1-2 Intel P54C-133 Intel P54CS-166 Clock Multiplier P54C P54CS P54CS P55C JP2 JP39 P54CQS B-STEP C-STEP 1-2 1-2 reserved reserved x2.5 x2.5 2-3 1-2 reserved reserved reserved reserved 1-2 2-3 x2 x2 x2 x2 2-3 2-3 x1.5 x1.5 x1.5 reserved Multiplier selection based on CPU type TYPE JP2 JP39 Intel P54C-75 2-3 2-3 Intel P54C-90 2-3 2-3 Intel P54C-100 2-3 2-3 Intel P54C-120 1-2 2-3 Intel P54C-133 1-2 2-3 Intel P54CS-150 1-2 1-2 Intel P54CS-166 1-2 1-2 Cyrix 6x86-100 1-2 2-3 External Cache (L2 cache) setting Async Cache / Sync Cache selection TYPE JP42 Synchronous Cache 2-3 Asynchronous Cache 1-2 Async Cache / Sync Cache size TYPE JP3 JP4 JP10 256KB 2-3 1-2 2-3 512KB 1-2 1-2 1-2 1MB 1-2 2-3 1-2 Voltage Source for Asynchronous L2 Cache TYPE JP12 JP13 JP14 JP15 +5V supply 2-3 2-3 2-3 2-3 +3.3V supply 1-2 1-2 1-2 1-2 PS/2 Mouse support TYPE JP17 JP18 JP19 Enabled 1-2 2-3 2-3 Disabled 2-3 1-2 1-2 Printer Port Interrupt TYPE JP31 IRQ5 1-2 IRQ7 2-3 Parallel Port Address TYPE JP43 JP44 Disabled 2-3 2-3 3BC 1-2 2-3 378 2-3 1-2 278 1-2 1-2 -----------------------------------------------------------------------' Rhino-5 586 board - rev 1.11, 1.12, 1.13, 1.15 CPU TYPE CPU Clock JP29 JP30 Intel P54C-75 50MHz 2-3 2-3 Cyrix 6x86-100 Intel P54C-90 60MHz 1-2 2-3 Intel P54C-120 Intel P54C-100 66MHz 2-3 1-2 Intel P54C-133 Intel P54CS-150 60MHz 2-3 1-2 Intel P54CS-166 66MHz 1-2 1-2 Clock Multiplier P54C P54CS P54CS P55C JP2 JP39 P54CQS B-STEP C-STEP 1-2 1-2 reserved reserved x2.5 x2.5 2-3 1-2 reserved reserved reserved reserved 1-2 2-3 x2 x2 x2 x2 2-3 2-3 x1.5 x1.5 x1.5 reserved Multiplier selection based on CPU type TYPE JP2 JP39 Intel P54C-75 2-3 2-3 Intel P54C-90 2-3 2-3 Intel P54C-100 2-3 2-3 Intel P54C-120 1-2 2-3 Intel P54C-133 1-2 2-3 Intel P54CS-150 1-2 1-2 Intel P54CS-166 1-2 1-2 Cyrix 6x86-100 1-2 2-3 External Cache (L2 cache) setting Async Cache / Sync Cache selection TYPE JP42 Synchronous Cache 2-3 Asynchronous Cache 1-2 Async Cache / Sync Cache size TYPE JP3 JP4 JP10 256KB 2-3 1-2 2-3 512KB 1-2 1-2 1-2 1MB 1-2 2-3 1-2 Voltage Source for Asynchronous L2 Cache TYPE JP12 JP13 JP14 JP15 +5V supply 2-3 2-3 2-3 2-3 +3.3V supply 1-2 1-2 1-2 1-2 PS/2 Mouse support TYPE JP17 JP18 JP19 Enabled 1-2 2-3 2-3 Disabled 2-3 1-2 1-2 Printer Port Interrupt TYPE JP31 IRQ5 1-2 IRQ7 2-3 Parallel Port Address TYPE JP43 JP44 Disabled 2-3 2-3 3BC 1-2 2-3 378 2-3 1-2 278 1-2 1-2 ------------------------------------------------