The SPARC CPU
2-7
Floating Point Unit
2.3
Floating Point Unit
The SPARC FPU is designed to execute all single- and double-precision
SPARC Version 8 floating point instructions except fsmuld. All other FP
instructions cause an unimplemented floating point operation trap. The
FPU contains a 32x32-bit register file.
INSTRUCTION
MIN
TYP
MAX
fads
4
4
17
faddd
4
4
17
fsubs
4
4
17
fsubd
4
4
17
fmuls
5
5
25
fmuld
7
9
32
fdivs
6
20
38
fdivd
6
35
56
fsqrts
6
37
51
fsqrtd
6
65
80
fnegs
2
2
2
fmovs
2
2
2
fabss
2
2
2
fstod
2
2
14
fdtos
3
3
16
fitos
5
6
13
fitod
4
6
13
fstoi
6
6
13
fdtoi
7
7
14
fcmps
4
4
15
fcmpd
4
4
15
fcomes
4
4
15
fcmped
4
4
15
unimplemented
3
3
3
Table 2-2 FPU Execution Timing
S3GX_TRMBook Page 7 Friday, September 19, 1997 11:39 am
Содержание SPARCbook 3 series
Страница 1: ...Series Technical Reference Manual 980327 02 3 S3GX_TRMBook Page i Friday September 19 1997 11 39 am...
Страница 8: ...viii S3GX_TRMBook Page viii Friday September 19 1997 11 39 am...
Страница 28: ...1 16 Architecture Overview Microcontroller Subsystem S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 44: ...2 16 The SPARC CPU SBus Controller S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 76: ...5 8 SCSI Controller DMA Support S3GX_TRMBook Page 8 Friday September 19 1997 11 39 am...
Страница 82: ...6 6 Ethernet Interface DMA Support for Network Operations S3GX_TRMBook Page 6 Friday September 19 1997 11 39 am...
Страница 96: ...7 14 PCMCIA Interface Microcontroller Registers S3GX_TRMBook Page 14 Friday September 19 1997 11 39 am...
Страница 146: ...9 28 MODEM Class 2 Fax Command Set S3GX_TRMBook Page 28 Friday September 19 1997 11 39 am...
Страница 180: ...11 30 Display Interface RAMDAC S3GX_TRMBook Page 30 Friday September 19 1997 11 39 am...
Страница 210: ...B 10 Connector Information Removable Hard Drive SCSI Connector S3GX_TRMBook Page 10 Friday September 19 1997 11 39 am...
Страница 216: ...Index vi S3GX_TRMBook Page vi Friday September 19 1997 11 39 am...