[Chips and Technologies, Inc.]

82C836 CHIPSet Introduction

The 82C836 (also known as SCATsx) is a VLSI device incorporating the motherboard logic required to build a low-cost, highly-integrated, IBM PC/AT-compatible computer. It is designed to be used in conjunction with other Chips and Technologies controllers such as the 82C45X VGA Controller and the 82C710 Integrated Floppy Disk and Multifunction Controller. When used with these devices, the 82C836 acts as the heart of a highly integrated system significantly reducing motherboard size, component count, and the need for many I/O channel slots.

FEATUREs
The 82C836 provides the following features:
● 80386sx control logic and clocks to support CPU speeds of up to 25MHz with zero (or one) wait states
● A 146818-compatible Real Time Clock with 114 bytes of CMOS RAM
● Two 8237-compatible DMA controllers
● Two 8259-compatible interrupt controllers
● An 8254-compatible programmable interval timer
● An 82284-compatible clock generation and READY interface
● An 82288-compatible bus controller
● A DRAM refresh controller
● Power management features
● A DRAM controller that supports up to 16 MB of DRAM using 256kB, 1MB or 4MB DRAMs
● A memory controller that provides shadow RAM and support of either 8-bit or 16-bit BIOS ROM
● Support for fast local cache RAM via external cache controller
● Four EMS page registers (LIM EMS 4.0 and 3.2 compatible)
● Interface logic for an 80387sx numeric coprocessor
● Interface logic for an 8042 keyboard controller
● Fast GATEA20 and fast CPU reset logic
● Compact packaging in a single 160-pin plastic flat pack (160 PFP).