386 Motherboards

386 Chipsets

Very early 386 motherboards used mostly discrete logic "TTL" ICs. Early 386 chipsets simply merged many of the TTL chips (DMA, IRQ, timers etc) into several highly integrated ICs. The first generation wasn't considered to be totally reliable so they were often mounted in PLCC sockets so expensive motherboards could be easily serviced. These early chipsets often have their top speeds stamped into the tops, and exceeding these limits can result in permanent damage as early VLSI chips were very sensitive. Later 386 chipsets contained reduced numbers of chips and became more specialized, integrating cache controllers, UMB memory management and sometimes support for DRAM interleaving. The last generation of 386 chipsets appeared in the early 90s and were often used in low end 486 motherboards as well. These are often 1 or 2 chip designs and are sometimes lacking performance or features of previous generation high end 386 chipsets, however they are usually rated for operation at higher speeds (40MHz) and work well with fast memory timings.

Acer Labs Inc. (ALi)

• M1209, 386SX/SLC
• M1217, 386SX/SLC
• M1419
• M1429, 386DX/486

ALD

• 308/308A

Atmel Corporation

• AT40281, 386SX Core Logic Controller w/Cache
• AT40283, 386SX Core Logic Controller w/o Cache
• AT40391, 386DX PC/AT Chip Set

BIOTEQ

• 82C3480, ISA 486/386 Cache System Chipset
• 82C3491, ISA 486/386 Single Chip

Chips & Technologies (C&T or "CHIPS")

• CS8230
• CS82310 PEAKset DM
• 82C236 SCATsx

Contaq

• 82C591/82C592 WriteBack
• 82C596 WriteBack

Efar Microsystems

• 82EC495 WriteBack
• 82EC798 WriteBack

Elite Microelectronics

• Eagle

Eteq

• 82C491/82C493 "Bobcat", 386DX/486 chipset
• 82C491/82C492 "Cougar", 386DX/486 chipset
• 82C4901/82C4902 "Bengal", 386DX/486 chipset (WritevBack)
• 82C390SX "Panda", 386SX Single Chip w/Direct Mapped Cache
• ET9800/ET391SX "Firefox", 386SX Write Back chipset

Forex

• 36C300/200 [36C300/46C402] WriteThru
• 36C311 Single Chip 386SX with Cache
• 46C411/402 WriteThru
• 46C521 WriteBack
• 46C421A/422 WriteBack

FTDI

• FTDI 82C3480 WriteBack/WriteThru

Hong Kong Technologies

• HK3000

Headland Technologies

• HT12/HT12+ (built in EMS)
• HT22/HT18C
• HT320 "Shasta"
• HT340 "Shasta"

Mosel

• MS400 Single Chip

Macronix

• MX83C305/306 (with built-in 8Kb cache)

Micro Integration Corporation (MIC)

• MIC9283, 386SX PC/AT Single Chip w/Posted Write or Write-Thru
• MIC9382, 386DX PC/AT Chip Set w/Write-Thru Cache
• MIC9391, 386DX PC/AT Chip Set w/Write-Back Cache

OPTi

• 82C281 Single-Chip Posted-Write
• 82C283 Single-Chip
• 82C291 Single-Chip WriteBack
• 82C381 WriteThru
• 82C391 WriteBack
• 82C481 WriteThru
• 82C491 WriteBack
• 82C493 WriteBack
• 82C495[SX,XLC,SLC]/392/206 Write Back (3 chip)
• 82C496/497/206 (2 chip)

Sarc

• RC2016A

Silicon Integrated Systems (SiS)

• 85C360, ISA 386DX Single Chip
• 85C310/320/330 "Rabbit", Interleaved DRAM
• 85C411, EISA 386/486 Chipset
• 85C460, ISA 386DX/486 Single Chip
• 85C461, ISA 386DX/486 Single Chip

Symphony Labs

• SL82C46x "Haydn"

Texas Instruments

• TACT83000 "Tiger"

UMC

• 82C330 "Twinstar"
• 82C48x WriteBack
• 82C491 Single-Chip

VLSI

• 386 "Topcat"