User manual AOPEN P5TC-HW

[. . . ] After installing a CPU, remember to set the switch 4-8 to specify a proper Vcore. ON 1 2 3 4 5 6 7 8 2. 9V K6-166/200 or M2 ON 1 2 3 4 5 6 7 8 2. 8V Intel P55C (MMX) ON 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 3. 52V Cyrix 6x86 or AMD K5 ON 1 2 3 4 5 6 7 8 2. 2V K6-266/300 ON 1 2 3 4 5 6 7 8 3. 45V Intel P54C or IDT C6 ON 1 2 3 4 5 6 7 8 1. 8V Reserved for future use 3. 2V AMD K6-233 2-5 Hardware Installation Warning: Please make sure that you have installed CPU fan properly if Intel PP/MT-233 or AMD K6 CPU is being selected to use. It may cause your system unstable if you can not meet the heat dissipation requirement from above CPU type. It is recommended to adopt larger fan on these CPU for better air flow in the system. Please refer to AOpen 's web site (http://www. aopen. com. tw) to choose a proper CPU fan. [. . . ] This mainboard supports IrDA (115Kbps, 1 meter) as well as ASK-IR (19. 2Kbps). Install infrared module onto IrDA connector and enable infrared function from BIOS setup, make sure to have correct orientation when you plug onto IrDA connector. Pin 1 2 3 4 5 6 Description +5V NC IRRX GND IRTX NC Note: Onboard serial port 2 (COM2) will not be available after IrDA connector is enabled. 1 2 3 4 5 6 IrDA 2-21 Hardware Installation 2. 3. 13 SB-LINK SB-LINK is used to connect Creative-compatible PCI sound card. If you have a Creative-compatible PCI sound card installed, it is necessary to link the card to the connector for compatibility issue under DOS environment. Pin 1 2 3 4 5 6 Description GNT# GND NC REQ# GND SIRQ# 1 2 5 6 SB-LINK 2-22 Hardware Installation 2. 4 Installing the System Memory Pin 1 of DIMM2 Pin 1 of DIMM1 This mainboard has four 72 pin SIMM sockets (Single-in-line Memory Module) and two 168 pin DIMM socket (Dual-inline Memory Module) that allow you to install system memory from minimum 8MB up to maximum 256MB. Pin 1 of Bank1 Pin 1 of Bank0 The SIMM supported by this mainboard can be identified by 4 kinds of factors: I. Size: single side, 1Mx32 (4MB), 4Mx32 (16MB), 16Mx32 (64MB), and double side, 1Mx32x2 (8MB), 4Mx32x2 (32MB), 16Mx32x2 (128MB). II. Type: FPM (Fast page mode) or EDO (Extended data output) IV. Parity: without parity (32 bit wide) or with parity (36 bit wide). The DIMM supported by this motherboard are always 64-bit wide SDRAM, which can be identified by following factors: I. Size: single side, 1Mx64 (8MB), 2Mx64 (16MB), 4Mx64 (32MB), 8Mx64 (64MB), 16Mx64 (128MB), and double side, 1Mx64x2 (16MB), 2Mx64x2 (32MB), 4Mx64x2 (64MB), 8Mx64x2 (128MB). Tip: Here is a trick to check if your DIMM is single-side or double-side -- if there are traces connected to golden finger pin 114 and pin 129 of the DIMM, the DIMM is probably double-side; otherwise, it is single-side. Following figure is for your reference. 168 85 Pin 129 Pin 114 2-23 Hardware Installation II. Speed: normally marked as -12, which means the clock cycle time is 12ns and maximum clock of this SDRAM is 83MHz. Sometimes you can also find the SDRAM marked as -67, which means maximum clock is 67MHz. Buffered and non-buffered: This motherboard supports non-buffered DIMMs. You can identify non-buffered DIMMs and buffered DIMMs according to the position of the notch, following figure is for your reference: non-buffered Reserved buffered Because the positions are different, only non-buffered DIMMs can be inserted into the DIMM sockets on this motherboard. Although most of DIMMs on current market are non-buffered, we still recommand you to ask your dealer for the correct type. 2-clock and 4-clock signals: Although both of 2-clock and 4-clock signals are supported by this motherboard, we strongly recommand you to choose 4clock SDRAM in consideration of reliability. Tip: To identify 2-clock and 4-clock SDRAM, you may check if there are traces connected to golden finger pin 79 and pin 163 of the SDRAM. If there are traces, the SDRAM is probably 4-clock; Otherewise, it is 2-clock. Parity: This motherboard supports standard 64 bit wide (without parity) SDRAM. Because Pentium CPU has 64 bit bus width, the SIMM sockets are arranged in two banks of two sockets each, they are Bank0 and Bank1. Both SIMMs in each bank must be in the same size and type. It is allowed to have different speed and type in different bank, for example, 70ns FPM in one bank and 60ns EDO in another bank, in such case, each bank is independently optimized for maximum performance. [. . . ] Following table list the recommended DRAM combinations of SIMM and DIMM: SIMM Data chip 1M by 4 1M by 4 1M by 4 1M by 4 1M by 4 1M by 16 1M by 16 1M by 16 1M by 16 4M by 4 4M by 4 4M by 4 4M by 4 SIMM Parity chip None None 1M by 1 1M by 4 1M by 4 None None 1M by 4 1M by 4 None None 4M by 1 4M by 1 Bit size per side 1Mx32 1Mx32 1Mx36 1Mx36 1Mx36 1Mx32 1Mx32 1Mx36 1Mx36 4Mx32 4Mx32 4Mx36 4Mx36 Single/ Double side x1 x2 x1 x1 x2 x1 x2 x1 x2 x1 x2 x1 x2 Chip count 8 16 12 9 18 2 4 3 6 8 16 12 24 SIMM size 4MB 8MB 4MB 4MB 8MB 4MB 8MB 4MB 8MB 16MB 32MB 16MB 32MB Recommended Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes SIMM Data chip 16M by 4 16M by 4 16M by 4 16M by 4 SIMM Parity chip None None 16M by 4 16M by 4 Bit size per side 16Mx32 16Mx32 16Mx36 16Mx36 Single/ Double side x1 x2 x1 x2 Chip count 8 16 9 18 SIMM size 64MB 128MB 64MB 128MB Recommended Yes, but not tested. Yes, but not tested. DIMM Data chip 1M by 16 1M by 16 2M by 8 2M by 8 Bit size per side 1Mx64 1Mx64 2Mx64 2Mx64 Single/ Double side x1 x2 x1 x2 Chip count 4 8 8 16 DIMM size 8MB 16MB 16MB 32MB Recommended Yes Yes Yes Yes 2-28 Hardware Installation DIMM Data chip 2M by 32 2M by 32 4M by 16 4M by 16 8M by 8 8M by 8 Bit size per side 2Mx64 2Mx64 4Mx64 4Mx64 8Mx64 8Mx64 Single/ Double side x1 x2 x1 x2 x1 x2 Chip count 2 4 4 8 8 16 DIMM size 16MB 32MB 32MB 64MB 64MB 128MB Recommended Yes, but not tested. Yes, but not tested. Warning: 64MB SIMMs using 16M by 4 bit chip (64M bit technology) are not available in the market and are not formally tested by AOpen quality test department yet. However they are supported by design specification from Intel and they will be tested as soon as they are available. [. . . ]