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參數資料
型號: W90221F
廠商: WINBOND ELECTRONICS CORP
英文描述: PA-RISC Embedded Micro-Controller(惠普PA-RISC結構的32位嵌入式微控制器)
中文描述: PA - RISC的嵌入式微控制器(惠普的PA - RISC結構的32位嵌入式微控制器)
文件頁數: 165/174頁
文件大小: 2102K
代理商: W90221F
=
The above information is the exclusive intellectual property of Winbond Electronics and shall not be disclosed, distributed or reproduced without permission from Winbond.
165
Versi on 0. 4, March/2000
case r : (r=1, rounding mode){
GR[t]{0:31}
zero_ext(GR[r2]{16:31})
+ 16h8000)){32:63};
{HI, LO}
({HI, LO} - (zero_ext(GR[r1]{16:31}) *
zero_ext(GR[r2]{16:31})
+16h8000)){0:63};
break;
}
default : (r=0, unrounding mode){
GR[t]{0:31}
{HI,
zero_ext(GR[r2]{16:31}){32:63};
{HI,
LO}
zero_ext(GR[r2]{16:31});
break;
}
}
Fraction mode operation (AIR[25] = 1) :
switch(cmplt) {
case r : (r=1, rounding mode){
GR[t]{0:31}
({HI, LO} - lshift(zero_ext(GR[r1]{0:15}) * zero_ext(GR[r2]{0:15}),
1) + 16h8000){32:63};
{HI,
LO}
zero_ext(GR[r2]{0:15}),
1) + 16h8000){0:63};
break;
}
default : (r=0, unrounding mode){
GR[t]{0:31}
({HI,
zero_ext(GR[r2]{0:15}),
1)){32:63};
{HI, LO}
({HI, LO} - lshift(zero_ext(GR[r1]{0:15}) *
zero_ext(GR[r2]{0:15}),
1)){0:63};
break;
}
}
Exception :
None
Multiply And Accumulate
Format:
MAC, cmplt
r1,r2,t
0:5 6:10 11:1 16:18 19 20
21:25 26 27:31
05
r2
r1
~
r
1
13
({HI,
LO}
-
((zero_ext(GR[r1]{16:31})
*
LO}
-
zero_ext(GR[r1]{16:31})
*
{HI,
LO}
-
zero_ext(GR[r1]{16:31})
*
({HI,
LO}
-
lshift(zero_ext(GR[r1]{0:15})
*
LO}
-
lshift(zero_ext(GR[r1]{0:15})
*
MAC
~
t
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