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Scratchpad may refer to: A pad of paper, such as a notebook , for preliminary notes, sketches, or writings Scratchpad memory , also known as scratchpad, scratchpad RAM or local store, is a high-speed internal memory used for temporary storage of calculations, data, and other work in progress
The TI-99/4A has 256 bytes of scratchpad memory on the 16-bit bus containing the processor registers of the TMS9900 [2] Cyrix 6x86 is the only x86-compatible desktop processor to incorporate a dedicated scratchpad. SuperH, used in Sega's consoles, could lock cachelines to an address outside of main memory for use as a scratchpad.
Although a full 16-bit processor, only the system ROM and 256 bytes of scratchpad RAM are available on the 16-bit bus. [ 6 ] Peripherals include a 5¼" floppy disk drive and controller, an RS-232 card with two serial ports and one parallel port, a P-code card for Pascal support, a thermal printer , a 300- baud acoustic coupler , a tape drive ...
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The second Scratchpad, originally named Scratchpad II, was developed from 1977 on, at Thomas J. Watson Research Center, under the direction of Richard Dimick Jenks. [ 4 ] The design is principally due to Richard D. Jenks (IBM Research), James H. Davenport (University of Bath), Barry M. Trager (IBM Research), David Y.Y. Yun (Southern Methodist ...
Sketchpad ran on the MIT Lincoln Laboratory TX-2 (1958) computer at the Massachusetts Institute of Technology (MIT), which had 64k of 36-bit words.The user drew on the computer monitor screen with the recently invented light pen, which relayed information on its position by computing at what time the light from the scanning cathode-ray tube screen is detected.
The Fairchild F8 is an 8-bit microprocessor system from Fairchild Semiconductor, announced in 1974 and shipped in 1975. [1] [2] The original processor family includes four main 40-pin integrated circuits (ICs); the 3850 CPU which contains the arithmetic logic unit and a scratchpad, the 3851 Program Storage Unit (PSU) which contains 1 KB of program ROM and handles instruction decoding, and the ...
Scratchpad (SPR) is extended area of memory visible to the EE CPU. This extended memory provides 16 kilobytes of fast RAM available to be used by the application. Scratchpad memory can be used to store temporary data that is waiting to be sent via DMA or for any other temporary storage that the programmer can define.