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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: 161/174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.
161
Versi on 0. 4, March/2000
GR[t]{0:31}
sign_ext(GR[r2]{16:31}){32:63};
{HI,
sign_ext(GR[r2]{16:31});
break;
}
}
Fraction mode opeartion (AIR[25] = 1) :
switch(cmplt){
case r: (r=1, rounding mode){
GR[t]{0:31}
sign_ext(GR[r2]{0:15}),
1) + 16h8000)){32:63};
{HI, LO}
({HI, LO} + (lshift(sign_ext(GR[r1]{0:15}) *
sign_ext(GR[r2]{0:15}),
1) + 16h8000)){0:63};
break;
}
default : (r=0, unrounding mode){
GR[t]{0:31}
({HI,
sign_ext(GR[r2]{0:15}),
1){32:63};
{HI, LO}
({HI, LO} + (lshift(sign_ext(GR[r1]{0:15}) *
sign_ext(GR[r2]{0:15}),
1){0:63};
break;
}
}
Exception :
None
Halfword Multiply And Accumulate Unsign
Format:
HMACU, cmplt
r1,r2,t
0:5 6:10 11:15 16:18 19 20
21:25 26 27:31
05
r2
r1
~
r
1
02
6 5 5 3 1
1 5 1 5
Purpose:
To multiply two unsigned 16-bit halfword of GR[r1] and GR[r2] register, then
accumulate {HI, LO} register with the multiplied result.
Description:
The corresponding 16-bit halfwords of GR[r1] and GR[r2] are interpretted as
unsigned 16-bit operands, and are arithmetically multiplied and add the product to the present
{HI,
LO}
+
sign_ext(GR[r1]{16:31})
*
LO}
{HI,
LO}
+
sign_ext(GR[r1]{16:31})
*
({HI,
LO}
+
(lshift(sign_ext(GR[r1]{0:15})
*
LO}
+
(lshift(sign_ext(GR[r1]{0:15})
*
HMACU
~
t
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