Description
The UM82C480 is a highly integrated, IBM PC/AT compatible chip set for high performance 80386/80486 based personal computer systems.
Features
- 100% IBM PC/AT compatible Support 80386 CPU running at 25/33/40 MHz Support 80486 CPU running at 25/33/40/50 MHz in 1X clock Support Intel 80387 / Weitek 3167 / Weitek 4167 Floating Point Coprocessors Built-in cache controller: - Direct-mapped organization with write-back operation - Q wait state for cache hit - Flexible cache size: 32/64/128/256/512/1024 KB - Hidden DRAM refresh to boost system performance - Built-in registers to support three independent non-cacheable regions - Support cache l.
UM82C480-UMC.pdf
