- add the other mountains of the Issaquah Alps
- The Issaquah Alps is the unofficial name for the highlands near Issaquah, Washington, a suburb of Seattle, including Cougar Mountain, Squak Mountain, Tiger Mountain, Taylor Mountain, Rattlesnake Ridge, Rattlesnake Mountain, and Grand Ridge. The term was invented in 1977 by noted nature author Harvey Manning within the pages of his trail guidebook Footsore 1, elevating their status from foothills to “Alps” to advocate preservation. Manning himself lived on a developed section of Cougar Mountain in his “200 meter hut”.
- Inside the Intel 386 processor die: the clock circuit (righto.com)
Processors are driven by a clock, which controls the timing of each step inside the chip. In this blog post, I’ll examine the clock-generation circuitry inside the Intel 386 processor. Earlier processors such as the 8086 (1978) were simpler, using two clock phases internally. The Intel 386 processor (1985) was a pivotal development for Intel as it moved x86 to CMOS (as well as being the first 32-bit x86 processor). The 386’s CMOS circuitry required four clock signals. An external crystal oscillator provided the 386 with a single clock signal and the 386’s internal circuitry generated four carefully-timed internal clock signals from the external clock.