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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.
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.
Interface name Year introduced Connector Max transfer Main use Notes CAMAC: 1972: Processor independent: Industry use. S-100: 1974: 2×50 2.54 mm card edge: Designed around Intel 8080 but used with other processors too: Homebrew and industry use. VME: 1981: DIN 41612: 10 MByte/s: Motorola 68000 based: Industry use. STEbus: 1983: DIN 41612 a+c ...
Store to memory using Direct Store (memory store that is not cached or write-combined with other stores). 3 Tiger Lake, Tremont, Zen 5: MOVDIR64B Move 64 bytes as Direct Store. MOVDIR64B reg,m512: 66 0F 38 F8 /r: Move 64 bytes of data from m512 to address given by ES:reg. The 64-byte write is done atomically with Direct Store. [ai] 3 Tiger Lake ...
As the Execution Unit is executing the current instruction, the bus interface unit reads up to six (or four) bytes of opcodes in advance from the memory. The queue lengths were chosen based on simulation studies. [9] An exception is encountered when the execution unit encounters a branch instruction i.e. either a jump or a call instruction. In ...
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.