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**UM82C480 386/486 PC Chip Set c91
***Info:
The UMC82C480 is a highly integrated, IBM PC/AT compatible chip set
for high performance 80386/80486 based personal computer systems.
Built with exquisite [yes it really says that] cache controller in
advanced 1.0um CMOS technology, UM82C481 (Integrated Memory
Controller, IMC), UM82C482 (Integrated System Controller, ISC), with
UM82C206 (Integrated Peripheral Controller, IPC), and limited counts
of commercial parts constitute a low cost, highly reliable, full
advanced feature personal computer system.
The UM82C482, Integrated System Controller (ISC), is part of UMC's
high performance 80386/80486 PC/AT chip set. It contains AT bus
control logic, data bus conversion logic, CPU reset logic, clock
generation for CPU, keyboard and timer, DMA/refresh logic and
peripheral interface logic. Incorporated with UM82C481, integrated
Memory Controller (IMC), and UM82C206, Integrated Peripheral
Controller (IPC), ISC provides system control functions for overall
PC/AT computer system.
The UM82C481, Integrated Memory Controller (IMC), is part of UMC's
high performance 80386/80486 PC/AT chip set. It contains sophisticated
direct-mapped cache controller with write back operation, and fast
page mode DRAM controller. Incorporated with UM82C482, Integrated
System Controller (ISC), and UM82C206, Integrated Peripheral
Controller (IPC), IMC provides main memory management function for the
PC/AT computer system.
***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:...
***Features:
o Fully compatible with PC/AT architecture
o Fully compatible with 8237 DMA controller, 8259 Interrupt
controller, 8254 Timer/Counter, and 146818 Real Time Clock
o Provides 7 DMA channels, 13 Interrupt request channels, 2 Timer/
Counter channels, and a Real Time Clock
o Built in 74LS612 memory mapper for DMA page address
o Provides 114 bytes of CMOS RAM memory
o 8 MHz DMA clock with programmable internal divider for 4 MHz
operation
o 16M bytes DMA address space
o Programmable wait states for the DMA cycle
o Reduced recovery time (120 ns) between I/O operations
**UM82c45x Serial/Parallel chips ?...
**Other chips:...
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