Section 2 Programming Model
Rev. 1.00 Oct. 01, 2007 Page 50 of 1956
REJ09B0256-0100
<Big endian>
DR (2i)
FR (2i)
FR (2i+1)
8n+4
8n+7
8n
8n+3
63
0
63 32 31 0
Floating-point register
Memory area
63
0
<Little endian>
Floating-point register
Memory area
DR (2i)
FR (2i)
FR (2i+1)
4n
4m
4n+3
4m+3
63
0
63 32 31 0
DR (2i)
FR (2i+1)
FR (2i)
8n+4
8n+7
8n+3
8n
63
0
63 32 31 0
(1) SZ = 0
(2) SZ = 1, PR = 0
63
0
63
0
DR (2i)
FR (2i+1)
FR (2i)
8n
8n+3
8n+7
8n+4
63
0
63 32 31 0
(3) SZ = 1, PR = 1
63
0
*
1,
*
2
*
2
Notes: 1. In the case of SZ = 0 and PR = 0, DR register can not be used.
2. The bit-location of DR register is used for double precision format when PR = 1.
(In the case of (2), it is used when PR is changed from 0 to 1.)
Figure 2.5 Relationship between SZ bit and Endian
Table 2.2
Bit Allocation for FPU Exception Handling
Field Name
FPU
Error (E)
Invalid
Operation (V)
Division
by Zero (Z)
Overflow
(O)
Underflow
(U)
Inexact
(I)
Cause FPU
exception
cause field
Bit 17
Bit 16
Bit 15
Bit 14
Bit 13
Bit 12
Enable FPU
exception
enable field
None
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Flag
FPU exception flag
field
None
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
(5) Floating-Point Communication Register (FPUL) (32 bits, Initial Value = Undefined)
Information is transferred between the FPU and CPU via FPUL.
Summary of Contents for SH7763
Page 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Page 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Page 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Page 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Page 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Page 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Page 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Page 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Page 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Page 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Page 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Page 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Page 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Page 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Page 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Page 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Page 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Page 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Page 2026: ...SH7763 Hardware Manual ...