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The Intel 8085 ("eighty-eighty-five") is an 8-bit microprocessor produced by Intel and introduced in March 1976. [2] It is the last 8-bit microprocessor developed by Intel. It is software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
(The basic 8080 instruction cycle time was 1.95 μs, which was four clock cycles.) The SDK-80 allowed interface to an existing application or custom interface development. A monitor ROM was provided. RAM 256 bytes expandable to 1 KB; ROM 2 KB expandable to 4 KB; Size/weight 12 (W) × 0.5 (D) × 6.75 (H) inch
The Intel 8279 is a keyboard and display controller developed for interfacing to Intel 8085, 8086 and 8088 microprocessors. The industrial version of ID8279 was available for USD $30.70 in quantities of 100. [1] Its important features are: [2] Simultaneous keyboard and display operations. Scanned keyboard mode.
IMSAI VDP-40 desktop computer of 1977-1979. Intel 8085, 32/64KB RAM, 2× FDD 80/160KB, S-100 bus. 2KB monitor ROM, 2KB Video ROM. The IMSAI 8080 is an early microcomputer released in late 1975, based on the Intel 8080 (and later 8085) and S-100 bus. [1] It is a clone of its main competitor, the earlier MITS Altair 8800. The IMSAI is largely ...
GNUSim8085 is a graphical simulator, assembler and debugger for the Intel 8085 microprocessor in Linux and Windows. It is among the 20 winners of the FOSS India Awards announced in February 2008. [1] GNUSim8085 was originally written by Sridhar Ratnakumar in fall 2003 when he realized that no proper simulators existed for Linux.
An external memory interface is a bus protocol for communication from an integrated circuit, such as a microprocessor, to an external memory device located on a circuit board. The memory is referred to as external because it is not contained within the internal circuitry of the integrated circuit and thus is externally located on the circuit board.
The DEC PDP-10, also 36-bit, had special instructions which allowed memory to be treated as a sequence of fixed-size bit fields or bytes of any size from 1 bit to 36 bits. A one-word sequence descriptor in memory, called a "byte pointer", held the current word address within the sequence, a bit position within a word, and the size of each byte.
In May 2020, a script reading directly from the Control Register Bus (CRBUS) [34] (after exploiting "Red Unlock" in JTAG USB-A to USB-A 3.0 with Debugging Capabilities, without D+, D− and Vcc [35]) was used to read from the Local Direct Access Test (LDAT) port of the Intel Goldmont CPU and the loaded microcode and patch arrays were read. [36]