- Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC
- These true- and false-color images from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite from June 15, 2002, show a broad view of the South American region known as the Pampas. The region is a large, flat, grass-covered expanse between the Andes Mountains to the west and the Atlantic coastal plain. In this image, the Pampas covers the bottom half of the image, and the difference between the two divisions of the Pampas are evident: to the west of the Parana River, which bisects the image from top to bottom, is the Dry Pampas, and to the east is the Humid Pampas. the region is home to Argentina’s ranching industry, and the “gaucho,” Spanish for “cowboy,” is as much a part of the cultural legacy there as he is in the American West.
- The 8085’s register file reverse engineered (righto.com)
On the surface, a microprocessor’s registers seem like simple storage, but not in the 8085 microprocessor. Reverse-engineering the 8085 reveals many interesting tricks that make the registers fast and compact. The picture below shows that the registers and associated control circuitry occupy a large fraction of the chip, so efficiency is important. Each bit is implemented with a surprisingly compact circuit. The instruction set is designed to make register accesses efficient. An indirection trick allows quick register exchanges. Many register operations use the unexpected but efficient data path of going through the ALU.
