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INTEL387TMDX Datasheet(PDF) 2 Page - Intel Corporation |
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INTEL387TMDX Datasheet(HTML) 2 Page - Intel Corporation |
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2 / 41 page  Intel387TM DX Math CoProcessor CONTENTS PAGE 10 FUNCTIONAL DESCRIPTION 5 20 PROGRAMMING INTERFACE 6 21 Data Types 6 22 Numeric Operands 6 23 Register Set 8 231 Data Registers 8 232 Tag Word 8 233 Status Word 9 234 Instruction and Data Pointers 12 235 Control Word 14 24 Interrupt Description 14 25 Exception Handling 15 26 Initialization 15 27 8087 and 80287 Compatibility 16 271 General Differences 16 272 Exceptions 17 30 HARDWARE INTERFACE 17 31 Signal Description 17 311 Intel386TM DX CPU Clock 2 (CPUCLK2) 20 312 Intel387TM DX MCP Clock 2 (NUMCLK2) 20 313 Intel387TM DX MCP Clocking Mode (CKM) 20 314 System Reset (RESETIN) 21 315 Processor Extension Request (PEREQ) 21 316 Busy Status (BUSY ) 21 317 Error Status (ERROR ) 21 318 Data Pins (D31 – D0) 21 319 WriteRead Bus Cycle (WR ) 21 3110 Address Strobe (ADS ) 21 3111 Bus Ready Input (READY ) 22 3112 Ready Output (READYO ) 22 3113 Status Enable (STEN) 22 3114 MCP Select 1 (NPS1 ) 22 3115 MCP Select 2 (NPS2) 22 3116 Command (CMD0 ) 22 2 2 |
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