Other Manufacturers
Other manufacturers produced equivalent chips. OPTi, for example, produced a two-chip "AT controller" chipset comprising the OPTi 82C206 and 82C495XLC, which was found in many early 80486 and Pentium AT-compatible machines. The OPTi 82C206 provided equivalent functionality to:
- a 8254 Programmable Interval Timer
- two 8259 Programmable Interrupt Controllers
- two 82437 DMA controllers
- a MC146818 NVRAM/RTC chip
- a 74LS612 Memory Mapper chip
The 82C495XLC incorporated the additional memory controller and shadow RAM support.
Read more about this topic: NEAT Chipset