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8087 NDP

8087 NDP. Prepared By: Prof. M. B. Salunke SITS, Narhe, Pune - 41. E-mail: msalunke@gmail.com. Features of 8087. Fabricated using HMOS III technology and packaged in a 40-pin cerdip package, 68- instructions, Instruction set includes both simple and complex floating point instructions,

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8087 NDP

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  1. 8087 NDP Prepared By:Prof. M. B. SalunkeSITS, Narhe, Pune - 41. E-mail: msalunke@gmail.com

  2. Features of 8087 • Fabricated using HMOS III technology and packaged in a 40-pin cerdip package, • 68- instructions, • Instruction set includes both simple and complex floating point instructions, • By interfacing 8087 NDP with 8086 processor, programmer can perform various powerful arithmetic floating point operations. e.g. add, sub, div, square root, logarithm etc., • 8087 support 7 data types: 16-, 32-, 64-bit integers, 32-, 64-, 80-bit floating point and 18-Digit BCD operands, • Having 8 X 80 bit individually addressable register stack

  3. Features of 8087 continued… • Available in • 5MHz (8087), • 8MHz (8087-2) and • 10MHz (8087-1), • 7- built-in exception handling functions • Compatible with IEEE floating point standard 754, • The data information inside 8087 is always stored in temporary real format (80-bit floating point representation) • Use of 8087 in 8086/8088 system increases processing speed to perform different mathematical operations required in CAM, numeric controllers, CAD or Graphics,

  4. Block Diagram

  5. CPU+8087 Architecture

  6. Data Types

  7. 8086/8087 System Configuration

  8. Tag Word

  9. Data Transfer Instructions • FLD source • FST dest • FSTP dest • FXCH dest • FILD source • FIST dest • FISTP dest • FBLD source • FBSTP dest

  10. Arithmetic Instructions • FADD • FADD source • FADD dest,source • FADDP dest,source • FIADD source • FSUB • FSUB source • FSUB dest,source • FSUBP dest,source • FISUB source

  11. Arithmetic Instructions • FSUBR • FSUBR source • FSUBR dest,source • FSUBRP dest,source • FISUBR source • FMUL • FMUL source • FMUL dest,source • FMULP dest,source • FIMUL source

  12. Arithmetic Instructions • FDIV • FDIV source • FDIV dest,source • FDIVP dest,source • FIDIV source • FDIVR • FDIVR source • FDIVR dest,source • FDIVRP dest,source • FIDIVR source

  13. Arithmetic Instructions • FSQRT • FSCALE • FPREM • FRNDINT • FXTRACT • FABS • FCHS

  14. Compare Instructions • FCOM • FCOM source • FCOMP • FCOMP source • FCOMPP • FICOM source • FICOMP source • FTST • FXAM

  15. Transcendental Instructions • FPTAN • FPATAN • F2XM1 • FYL2X • FYL2XP1

  16. Constant Load Instructions • FLDZ • FLD1 • FLDPI • FLD2T • FLDL2E • FLDLG2

  17. Coprocessor Control Instructions • FINIT / FNINT • FDISI / FNDISI • FENI / FNENI • FLDCW source • FSTCW / FNSTCW dest • FSTSW / FNSTSW dest • FCLEX / FNCLEX • FSAVE / FNSAVE dest

  18. Coprocessor Control Instructions • FRSTOR source • FSTENV / FNSTENV dest • FLDENV / FNLDENV source • FINCSTP • FDECSTP • FFREE dest • FNOP • FWAIT

  19. Happy Learning E-mail: msalunke@gmail.com URL: www.salunke.webs.com

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