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**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
***Info:...
***Configurations:...
***Features:...
**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
***Info:...
***Versions:
UM82C206
UM82C206L
UM82C206F
No idea what the L or F versions do.
***Features:...
**UM82c45x Serial/Parallel chips ?...
**Other chips:...
*Unresearched:...
*VIA...
**VT82C505 Pentium/486 VL to PCI Bridge <05/30/94
***Info:...
***Versions:...
***Features:
o VL to PCI Bridge
- Combined with VT82C486 or VT82C496G for 80486SX/DX/DX2/DX4 based
PCI/VL/ISA Green-PC systems
- Combined with VT82C530MV chip set for Pentium/P54C/M1 based
PCI/VL/ISA Green-PC Systems
o Sophisticated Bridging Capabilities
- Supports PCI master to PCI slave cycles
- Supports PCI master to VL bus slave, system memory and ISA
slave cycles
- Supports VL master including CPU to PCI slave cycles
- Supports ISA master to VL or PCI slave cycles
- Supports multiple accelerated decoding schemes from VL master
including CPU to PCI and ISA slaves
- Supports CPUs with write-back level-one cache
- Concurrent CPU and PCI operation
- 4 level of CPU/VL to PCI post write buffers
- Automatic detection of data streaming burst cycles from CPU/VL
to PCI bus
- 4 level of post write buffers from PCI master to VL slave,
system memory and ISA slaves
- 4 level of prefetch buffers from system memory for access by PCI
masters
- Bursting capability for both PCI and CPU/VL bus
o Intelligent PCI Interface
- PCI 2.0 compliant
- Synchronous or divide-by-two CPU clock
- Hidden arbitration for up to four PCI masters
- Supports PCI preemption and time-out function
- Supports PCI master and slave initiated abort mechanism
- Supports PCI lock function
- Supports data parity generation for PCI master read cycles
- Supports data parity checking for PCI master write cycles
- Supports parity error and system error reporting on the PCI bus
- Supports PCI configuration cycles
- Interrupt steering and conversion to edge triggering for ISA
compatibility
o PCI Compliant IO Characteristics
o 0.8um high speed and low power CMOS process
o 160pin PQFP package
**VT82C586/A/B PCI Integrated Peripheral Controller <10/13/96...
**VT82C596/A Mobile PCI Integrated Peripheral Controller <11/05/97...
**VT82C686A/B PCI Super-I/O Integrated Peripheral Ctrl. <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
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