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**82258 Advanced Direct Memory Access Coprocessor(ADMA) 01/01/84
***Notes:...
***Info:
Intel's 82258, Advanced Direct Memory Access Coprocessor is a high
performance, 16 bit DMA processor optimized for the 80286, 80186 and
the 8086 families of CPUs and compatible with 80386 CPU. It has
on-chip bus interface for the whole 8086 family architecture. Four
high speed, independently programmable DMA channels can achieve a
maximum cumulative transfer rate of 8 MByte/sec in an 8 MHz 80286
system and 4 MByte/sec in 8 MHz 8086/80186 systems. Channel 3 can be
used as a Multiplexor channel, whereby, it supports 32
subchannels. This flexibility allows one to use a single DMA channel
to handle a large number of slow and medium speed I/O
devices. Advanced capabilities like Command and Data chaining and "On
the fly" operations allow the 82258 to remove the I/O management load
from the processor. The 82258 addresses the full 80286 CPU memory (16
MB for 80286), thus simplifying the system design. Automatic
assembly/disassembly of data allows 16 bit processors to interface
with common 8 bit peripherals and vice-versa. Remote mode of
operation, where the 82258 has its own resident bus, allows modular
system design. The 82258 complements the high performance,
multitasking capabilities of the 80286.
***Versions...
***Features:...
**82335 High-Integration Interface Device For 386SX c:Nov88...
**82360SL I/O Subsystem 10/05/90
***Notes:...
***Info:...
***Versions:...
***Features:...
**82370 Integrated System Peripheral (for 82376) c:Oct88...
**82371FB/SB PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95...
**82371MX Mobile PCI I/O IDE Xcelerator (MPIIX) 11/01/95...
**82371AB PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4) 02/17/97...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB) c:Mar93...
**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
*Headland/G2...
**HTK340 "Shasta" 486 Chip Set c:Jun92
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**Support Chips:
**HT44 Secondary Cache c:Jun92...
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