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參數(shù)資料
型號(hào)： W90210F
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： PA-RISC Embedded Micro-Controller(惠普PA-RISC結(jié)構(gòu)的32位嵌入式微控制器)
中文描述： 32-BIT, MROM, RISC MICROCONTROLLER, PQFP208
封裝： PLASTIC, QFP-208
文件頁數(shù)： 64/67頁
文件大小： 297K
代理商： W90210F
W90210F
64
Version 1.4, 10/8/97
The above information is the exclusive intellectual property of Winbond Electronics Corp. and shall not be disclosed, distributed or reproduced without permssion fromWinbond.
Halfword Multiply
HMPY
Format:
HMPY, cmplt
r1,r2,t
1
1
05
6
5
5
5
2
5
r2
r1
t
0:5
6:10
11:15
27:31
26
21:25
12
-
2
c
g
1
Purpose:
To multiply corresponding halfwords of two registers.
Description:
The corresponding 16-bit halfwords of GR
r1
and GR
r2
are interpreted as signed or unsigned
16-bit integers and are arithmetically multiplied together. The 32-bit result is placed in GR
t
.
The
cmplt
completer is specified by the
g
and the
c
bits in the instruction.
Operation:
switch(cmplt) {
case uhh (g=0, c=00, unsigned multiplication) {
GR[t]{0..31}
←
zero_ext(GR[r1]{0..15})
×
zero_ext(GR[r2]{0..15})
break;
}
case shh (g=1, c=00, signed multiplication) {
GR[t]{0..31}
←
sign_ext(GR[r1]{0..15})
×
sign_ext(GR[r2]{0..15})
break;
}
case uhl (g=0, c=01, unsigned multiplication) {
GR[t]{0..31}
←
zero_ext(GR[r1]{0..15})
×
zero_ext(GR[r2]{16:31})
break;
}
case shl (g=1, c=01, signed multiplication) {
GR[t]{0..31}
←
sign_ext(GR[r1]{0..15})
×
sign_ext(GR[r2]{16:31}
break;
}
case ulh (g=0, c=10, unsigned multiplication) {
GR[t]{0..31}
←
zero_ext(GR[r1]{16:31})
×
zero_ext(GR[r2]{0..15})
break;
}
case slh (g=1, c=10, signed multiplication) {
GR[t]{0..31}
←
sign_ext(GR[r1]{16:31})
×
sign_ext(GR[r2]{0..15})
break;
}
case ull (g=0, c=11, unsigned multiplication) {
GR[t]{0..31}
←
zero_ext(GR[r1]{16:31})
×
zero_ext(GR[r2]{16:31})
break;
}
case sll (g=1, c=11, signed multiplication) {
GR[t]{0..31}
←
sign_ext(GR[r1]{16:31})
×
sign_ext(GR[r2]{16:31})
break;
}
}
Exception:
Restriction:
None
Winbond defined instruction for W90210F.
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