IDE ports work in either PIO Modes 0 through 4. The 168-pin DIMM slots can be fitted with 16Mx4, 8Mx8 or 4Mx16 66ns SDRAM modules. The 72-pin SIMM slots provide for between 8 MB and 256 MB of either FPM of EDO 60ns DRAM. Compatible CPUs are Pentium 75-233, P54C, P55C MMX, Cyrix/IBM 6x86MX (MII), IDT C6, and AMD K5 and K6. CPU core voltages supported are 2.5V, 2.7V, 2.8V, 2.9V and 3.5V. The board supports FSB speeds of 50, 55, 60, 66, and 75 MHz, and CPU clock multipliers of 1.5x, 2.0x, 2.5x, and 3.0x. So you need to choose either: 8x16M, 16x32M, or 32圆4M. The Apollo VP1 chipset can only handle 16 Mbit memory modules - those with 64 Mbit will only be recognised at a quarter of their true capacity. Memory: 4 x 72-pin SIMM (2 banks), 2 x 168-pin DIMM. Ĭhipset: VIA Apollo VP1 (relabelled "VX Pro"). Older BIOS versions were dated, ,, and. The last BIOS version for this board was dated, and added support for AMD K5 PR166 and AMD K6 CPU, Cyrix MII CPU, LBA mode (> 512 MB), and auto-banking DRAM. It supports 3.3V and 3.5V CPUs, with multipliers of 1.5x, 2x, 2.5x or 3x. This board has 256 KB or 512 KB COAST 3.0+ module slot. Memory: 4 x 72-pin SIMM (8 to 128 MB max), 1 x 168-pin DIMM (8 to 64 MB max.) Hard disks of between 528 MB and 8.4 GB are supported without device drivers. transfer rate of 16.67 MB/second) and master DMA Mode 2 for a maximum of 22 MB/second. The SIMM memory banks support both EDO (Extended Data Out) and Fast Page Mode (FPM) DRAM modules.Īll three PCI slots support bus mastering, with support for up to 4 IDE drives in PIO Mode 0 up to Mode 4 (max. The board can support a cacheable area up to 64 KB of cache. Either a 256 KB or 512 KB module of asynchronous SRAM or a 256 KB module of pipeline-burst SRAM can be installed. Driver vga amptron socket 478 Pc#This is one of the PC Chips boards that have the fake cache chips, as can be seen in the top-right corner of the image above - this means that unless you have a COASt module installed in the slot, the motherboard has no L2 cache. In order to support dual-rail voltage CPUs (such as Pentium P55C), you must also have the PCChips voltage regulator module (VRM) installed which was an optional extra.Įxternal bus clock speeds supported are: 50 MHz, 60 MHz and 66 MHz.Ĭlock speeds supported are 1.5x, 2.0x, 2.5x and 3x. Supports single-rail voltage CPUs, including the Intel Pentium P54C 75 MHz up to 200 MHz, AMD K5 PR75 - PR166, IDT C6/Winchip 2/2A and some early Cyrix 6x86 including P120+, P150+ and P166+. Memory: 4 x 72-pin SIMM (2 banks) - max 128 MB onboard. Slots: 4 x ISA (16-bit), 3 x PCI, 1 x COAST Version 2.2 of this board may have a PC Chips-branded single-chip controller with CHTF2 on it, instead of the SARC RC4018A4. Both the Intel 80386SX and Cyrix Cx486SLC are supported. This board supports CPU speeds of 16, 25, 33 and 40 MHz. Memory: 4 x 30-pin SIMM (2 banks) - max 16 MB. Here is an example of a board revision with a CPU socket: 1 2 3 4 Socketed versions support the Cyrix Cx486DLC or Texas Instruments TX486DLC chips. Another revision of this board has a socket for the main CPU instead of the PQFP (Plastic Quad Flat Package) you see in the rev 3.1 image above. The blue socket in the corner is for a math coprocessor. Memory: 8 x 30-pin SIMM (2 banks) + onboard cache This page is large, so I've included this quick links section for convenience: M326 PC Chips motherboards were also sold under the names Ability, Amptron, Aristo, Eurone/ Matsonic, Houston Tech, PCWare(Alton), Protac and Sybercom. The were somewhat famous in the mid 90s to early 2000s for building motherboards with fake cache chips on 486 boards and relabelled chipsets (socket 5, 7 and slot 1) suggesting they were better than Intel's. Founded in 1984, they later became one of the major shareholders in Elitegroup (ECS) in 1998 and finally merged with ECS in 2005. PC Chips (Hsing Tech Enterprise Co.) was a low-end motherboard manufacturer for the IBM PC and its compatibles during the DOS era.
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