- The community that would become Tenino, located in Thurston County, was founded in 1851 when Stephen Hodgden (1807-1882) filed a claim under the Donation Land Claim Act of 1850. In 1872 the Northern Pacific Railroad arrived, giving the local economy a major boost by enabling local timber and especially sandstone to be transported to market. By the time the city of Tenino was incorporated in 1906, sandstone quarries were anchoring the economy. But almost as soon as the city was incorporated, a series of major economic challenges arose. Most significantly, new building materials resulted in collapsing markets for sandstone. The Great Depression of the 1930s also took a toll on the already struggling local economy. In recent decades the city has found new life as a bedroom community for those working in nearby Olympia and Tacoma.
- Reverse engineering ARM1 instruction sequencing, compared with the Z-80 and 6502 (righto.com)
When a computer executes a machine language instruction, it breaks down the instruction into smaller steps that are performed in sequence. For instance, a load instruction might first compute a memory address, then fetch a value from that address, and then store that value in a register. This article describes how the ARM1 processor implements instruction sequencing, performing the right steps in order. I also look briefly at the 6502 and Z-80 microprocessors and the different sequencing techniques they use.