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The bootstrap program usually read a somewhat longer program from punched paper-tape, punched cards, magnetic tape, drum or disk which in turn would load the operating system from disk. Some machines accelerated the bootstrap process by allowing the operator to set the controls to contain one or two machine language instructions and then ...
Early 7561/1 VDUs had simple composite-video inputs, while the updated 7561/2 VDU had improved display tubes and interlaced scan. The native screen resolution was 25 lines of 80 characters, but there were options for a 960-character display format. [2] 7502 used a much closer integration between the processor and the display driver circuits. In ...
The card slots are arranged on an angle, which allows the case to be reduced in height. Each card contains its own voltage regulators, using the Z-shaped mounting bracket as a heat-sink. (Power distribution on the backplane is unregulated +8V and +/-18V; the cards regulate these to their requirements, typically +5V and +/-12V.)
In computing, hardware overlay, a type of video overlay, provides a method of rendering an image to a display screen with a dedicated memory buffer inside computer video hardware. The technique aims to improve the display of a fast-moving video image — such as a computer game, a DVD, or the signal from a TV card.
The bootstrap procedure reads one card from the card reader. The boot card contains binary code [23] to read the contents of sector zero of the disk drive, which in turn handles the "operation complete" interrupt from the disk drive and performs additional disk reads to prepare the 1130 for the first punched-card job. The whole process takes ...
Side-by-side is a type of split-screen presentation format used on television broadcasts, particularly as a means of continuing to show a view of ongoing live content, whilst simultaneously airing commercials alongside them. Typically, only the audio of the advertising is played.
Aubrey Plaza appeared to pay tribute to her late husband, Jeff Baena, during her SNL 50: The Anniversary Special appearance. While introducing performers Miley Cyrus and Brittany Howard on Sunday ...
The boot sector (track 0, side 0, sector 1) was Z80 code beginning with DI 0xF3. The 8088 bootstrap was loaded by the Z80. Track 1, side 0, sector 2 starts with the Media/FAT ID byte 0xFA. Unformatted disks use 0xE5 instead. The file system starts on track 2, side 0, sector 1. There are 2 copies of the FAT and 96 entries in the root directory.