Octek DCS-286 © 198? Octek
A classic late-1980s Baby AT motherboard built around a high-performance Intel or AMD 80286 microprocessor running at 12 MHz or 16 MHz. It is defined by its reliance on the Headland G2 (GC101/GC102) core logic chipset, which dramatically reduced motherboard manufacturing costs by consolidating the entire IBM PC/AT peripheral controller logic, clock generation, DMA, and interrupt handling into a highly efficient two-chip solution. The DCS-286 layout features six 16-bit ISA expansion slots, two 8-bit ISA slots, a dedicated socket for an 80287 math co-processor, and dual-tier memory support combining old-style DIP sockets with modern 30-pin SIMM blocks.
Hardware Shadow RAM: The Headland G2 chipset on this board features early hardware-level "Shadow RAM" capabilities. It allows the slow 8-bit or 16-bit ROM BIOS routines to be copied directly into fast system RAM during the boot sequence, drastically speeding up video BIOS calls and character rendering in text-heavy DOS applications.