[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
*_IBM...
*ACC Micro...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**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...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C822 PCIB (VLB-to-PCI bridge) c:94
***Notes:...
***Info:
OPTi's 82C822 VESA local bus to PCI Bridge (PCIB) chip is a high
integration 208-pin PQFP device designed to work with VESA VL bus
compatible core logic chipsets. The 82C822 PCIB provides interface to
the high performance PCI bus and is fully compliant to the PCI Version
2.0 specification. The 82C822 requires no glue logic to implement the
PCI bus interface and hence it allows designers to have a highly
integrated motherboard with both VESA local bus and PCI local bus
support. The PCIB chip offers premium performance and flexibility for
VESA VL-based desktop systems running up to 50MHz. The 82C822 PCIB can
be used with OPTi's 82C802G core logic and 82C602 buffer chipsets to
build a low cost and power efficient 486-based desktop solution. It
also works with OPTi 82C546/547 chipset to build a high performance
PCI/VL solution based on the Intel P54C processor.
The 82C822 PCIB provides all of the control, address and data paths to
access the PCI bus from the VESA Local bus (VL bus). The 82C822
provides a complete solution including data buffering, latching,
steering, arbitration, DMA and master functions between the 32-bit VL
bus and the 32-bit PCI bus.
The PCIB works seamlessly with the motherboard chipset bus arbiter to
handle all requests of the host CPU and PCI bus masters, DMA masters,
I/O relocation and refresh. Extensive register and timer support are
designed into the 82C822 to implement the PCI specification.
The 82C822 is a true VESA to PCI bridge. It has the highest priority
on CPU accesses after cache and system memory. It generates LDEV#
automatically and then compares the addresses with its internal
registers to determine whether the current cycle is a PCI cycle. When
a cycle is identified as PCI cycle, the 82C822 will take over the
cycle and then return RDY# to the CPU. If not, the 82C822 will give up
the cycle to the local device or, in the case of an ISA slave,
generate a BOFF# cycle to the CPU. This action will abort the cycle
and allow the CPU to rerun the cycle.
The 82C822 includes registers to determine shadow memory space, hole
locations and sizes to allow the 82C822 to determine which memory
space should be local and which is located on the ISA bus. Upon access
to memory, the 82C822 can determine whether or not the cycle is a PCI
access by comparing the cycle with its internal registers.
***Versions:...
***Features:...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
**UM82C*** (IBM/INTEL Direct replacement) c87
Note: Dates vary for when these chips were first available. Two
databooks have been used one from '86 the other from '91. Not all the
chips are listed in the '86 databook, the date of '87 is an
assumption.
PC/XT:
IBM: UMC: Desc:
Intel 8284 UM82C84A 25MHz CMOS Clock Generator and Driver
Intel 8288 UM82C88 Bus Controller
Intel 8259 UM8259A Programmable Interrupt Controller also UM82C59A-2 (CMOS version)
Intel 8237 UM8237A 3-5MHz Programmable DMA Controller (DMAC)
Intel 8253 UM8253*2 2.6-5MHz Programmable Interval Timer
Intel 8255 UM82C55A* Programmable Peripheral Interface
Note: * indicates: possible compatibility, datasheet does not state
explicitly. YMMV.
Note: *2 indicates: The UM8253 can be replaced with the
UM82C54/-2. The datasheet says it is a superset of the 8253, and
works up to 10MHz. Also it's compatible with the 8254. AT: IBM:
UMC: Desc: Intel 82284 UM82C284* 10-12.5MHz Clock Generator and
Ready Interface Intel 82288 UM82C288* 10-12.5MHz Bus Controller
Intel 8254 UM82C54/-2 8-10MHz CMOS Programmable Interval Timer
Intel 8259 UM8259A Programmable Interrupt Controller also
UM82C59A-2 (CMOS version) Intel 8237 UM8237A 3-5MHz Programmable
DMA Controller (DMAC) 74LS612 UM74HCT612* Memory Mapper MC146818
RTC UM82C6818* Real-Time Clock (RTC) Intel 8047 ?? Keyboard
Controller
Note: * indicates: possible compatibility, datasheet does not state
explicitly. YMMV.
**UM82C088 PC/XT Integration Chip <91...
**UM82C230 286AT MORTAR Chip Set <91...
**UM82C210 386SX/286 AT Chip Set <91...
**UM82C3xx Twinstar & UM82C336F/N & UM82C39x [no datasheet] ?...
**UM82C380 386 HEAT PC/AT Chip Set <91...
**UM82C480 386/486 PC Chip Set c91...
**UM82C493/491 ??????????????? [no datasheet] ?...
**UM8498/8496 486 VL Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886 HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890 Pentium chipset [no datasheet] ?...
**
**Support Chips:
**UM82152 Cache Controller (AUStek A38152 clone) <91...
**UM82C852 Multi I/O For XT <91...
**UM82C206 Integrated Peripheral Controller <91...
**UM82c45x Serial/Parallel chips ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
(c) Copyright mR_Slugs Warehouse - All rights Reserved