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AT697F Datasheet(PDF) 79 Page - ATMEL Corporation

Part # AT697F
Description  Rad-Hard 32 bit SPARC V8 Processor
PDF  155 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT697F Datasheet(HTML) 79 Page - ATMEL Corporation

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AT697F ADVANCE INFORMATION
79
7703C–AERO–6/09
The WIM can be read by the privileged RDWIM instruction and written by the WRWIM
instruction.
Table 32. Y Register - Y
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
y
r/w
xxxx xxxx
The Y register can be read and written with the RDY and WRY instructions.
Table 33. Trap Base Address - TBR
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
tba[19:0]
tt[7:0]
reserved
r/w
r
r/w
0000
Bit Number
Mnemonic
Description
31..12
tba[19:0]
Trap Base Address
This field contains the most-significant 20 bits of the trap table address.
11..4
tt[7:0]
Trap Type
This eight-bit field is written by the hardware when a trap occurs, and retains its value until the next trap. It
provides an offset into the trap table.
The tba field is written by the WRTBR instruction. Use of WRTBR is don’t care for tt field.
4..0
cwp[4:0]
comprise the current window pointer, a counter that identifies the current window into the r registers. The
hardware decrements the CWP on traps and SAVE instructions, and increments it on RESTORE and RETT
instructions (modulo NWINDOWS).
Table 31. Window Invalid Mask - WIM
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
windows
7
6
5
4
3
2
1
0
r
r/w
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
Bit Number
Mnemonic
Description
0 < n < 7
windows[n]
Indicated wether the window is a ‘valid’ or an ‘invalid’ one.
‘0’ : valid
‘1’ : invalid
Bit Number
Mnemonic
Description



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