- Just before dawn on September 21, 1868, 26 S’Klallam Indians, led by a man known locally as Lame Jack (or Nu-mah the Bad by his tribesmen), conduct a raid on a party of 18 Tsimshian Indians camped on New Dungeness Spit. The Tsimshians were traveling by dugout canoe to Fort Simpson near Prince Rupert, British Columbia, from Puyallup where they had been harvesting hops. They had decided to wait for daylight and for a dense fog to lift before making the 22-mile journey north across the Strait of Juan de Fuca to Vancouver Island. Within a short period of time, the S’Klallam massacre 17 Tsimshian Indians, but one woman, wounded and left for dead, escapes to tell the story. It is the last major bloodletting among Indians in this area.
- Reverse-engineering the conditional jump circuitry in the 8086 processor (righto.com)
Intel introduced the 8086 microprocessor in 1978 and it had a huge influence on computing. I’m reverse-engineering the 8086 by examining the circuitry on its silicon die and in this blog post I take a look at how conditional jumps are implemented. Conditional jumps are an important part of any instruction set, changing the flow of execution based on a condition. Although this instruction may seem simple, it involves many parts of the CPU: the 8086 uses microcode along with special-purpose condition logic.