- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377496 > Intel387 sx (Intel Corp.) SX Math Coprocessor(32位數(shù)學(xué)協(xié)處理器) PDF資料下載
參數(shù)資料
| 型號： | Intel387 sx |
| 廠商： | Intel Corp. |
| 英文描述： | SX Math Coprocessor(32位數(shù)學(xué)協(xié)處理器) |
| 中文描述： | 山西數(shù)學(xué)協(xié)處理器（32位數(shù)學(xué)協(xié)處理器） |
| 文件頁數(shù)： | 45/47頁 |
| 文件大小： | 443K |
| 代理商： | INTEL387 SX |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁當(dāng)前第45頁第46頁第47頁
Intel387
TM
SX MATH COPROCESSOR
APPENDIX A
INTEL387 SX MATH COPROCESSOR
COMPATIBILITY
A.1 8087/80287 Compatibility
This section summarizes the differences between the Intel387 SX Math CoProcessor and the 80287 Math
CoProcessor. Any migration from the 8087 directly to the Intel387 SX Math CoProcessor must also take into
account the differences between the 8087 and the 80287 Math CoProcessor as listed in Appendix B.
Many changes have been designed into the Intel387 SX Math CoProcessor to directly support the IEEE
standard in hardware. These changes result in increased performance by eliminating the need for software
that supports the standard.
A.1.1 GENERAL DIFFERENCES
The Intel387 SX Math CoProcessor supports only affine closure for infinity arithmetic, not projective closure.
Operands for FSCALE and FPATAN are no longer restricted in range (except for
g
%
); F2XM1 and FPTAN
accept a wider range of operands.
Rounding control is in effect for FLD constant.
Software cannot change entries of the tag word to values (other than empty) that differ from actual register
contents.
After reset, FINIT, and incomplete FPREM, the Intel387 SX Math CoProcessor resets to zero the condition
code bits C
3
–C
0
of the status word.
In conformance with the IEEE standard, the Intel387 SX Math CoProcessor does not support the special data
formats pseudo-zero, pseudo-NaN, pseudo-infinity, and unnormal.
The denormal exception has a different purpose on the Intel387 SX Math CoProcessor. A system that uses the
denormal exception handler solely to normalize the denormal operands, would better mask the denormal
exception on the Intel387 SX Math CoProcessor. The Intel387 SX Math CoProcessor automatically normalizes
denormal operands when the denormal exception is masked.
A-1
45
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| INTEL486 GX | Emedded Ultra-Low Power INTEL486 GX Processor(嵌入式超低能量處理器) |
| INTEL486 SX | Emedded Ultra-Low Power INTEL486 SX Processor(嵌入式超低能量處理器) |
| INTEL82801 | 82801AB (ICH0) I/O Controller Hub |
| INTEL82802AB | Firmware Hub (FWH) |
| INTELDX2 | High-Performance 32-Bit Embedded Processor(高性能32位嵌入式處理器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INTEL387TMDX | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel387TM DX MATH COPROCESSOR |
| INTEL740 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:64-Bit Graphics (GUI) Accelerator |
| INTEL82801 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:82801AB (ICH0) I/O Controller Hub |
| INTEL82802AB | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Firmware Hub (FWH) |
| INTELLIGENT CHARGER + 4AA | 制造商:Energizer 功能描述:Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。