W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 216

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

truncated the lower 32 bits when the least 32th bit is zero. IF the the least 32th bit is
one, add one the high-order 32 bits and truncate the low-order 32 bits.
Operation:
Integer mode operation (AIR[25] = 0) :
switch (cmplt) {
zero_ext(GR[r2]{0:31})
zero_ext(GR[r2]{0:31})
zero_ext(GR[r2]{0:31}){32:63};
zero_ext(GR[r2]{0:31});
}
Fraction mode operation :
switch(cmplt) {
zero_ext(GR[r2]{0:31}),
zero_ext(GR[r2]{0:31}),
zero_ext(GR[r2]{0:31}),
zero_ext(GR[r2]{0:31}),
}
W90221X version 0.6
The completer "r" indicates operating in rounding mode, the multiply result can be
default : (r=0, unrounding mode){
default : (r=0, unrounding mode){
case r : (r=1, rounding mode){
case r : (r=1, rounding mode){
}
}
}
GR[t]{0:31}
{HI, LO}
GR[t]{0:31}
{HI, LO}
break;
GR[t]{0:31}
{HI, LO}
}
break;
break;
{HI, LO}
GR[t]{0:31}
break;
1){0:31};
1){0:63};
1) + 32h80000000){0:31};
1) + 32h80000000){0:63};
({HI,
({HI,
+ 32h80000000)){0:31};
+32h80000000)){0:63};
({HI,
{HI,
({HI, LO} - lshift(zero_ext(GR[r1]{0:31}) *
({HI, LO} - lshift(zero_ext(GR[r1]{0:31}) *
LO}
LO}
({HI, LO} - (zero_ext(GR[r1]{0:31}) *
{HI, LO} - zero_ext(GR[r1]{0:31}) *
LO}
LO}
-
-
lshift(zero_ext(GR[r1]{0:31})
lshift(zero_ext(GR[r1]{0:31})
-
-
(zero_ext(GR[r1]{0:31})
zero_ext(GR[r1]{0:31})
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