Delta Tau GEO BRICK LV User Manual
Turbo PMAC User Manual
424
Writing a Host Communications Program
DUAL-PORTED RAM DATA GATHERING FORMATS
Byte 2
Byte 1
Byte 0
Byte 2
Byte 1
Byte 0
Byte 2
Byte 1
Byte 0
Byte 5
Byte 4
Byte 2
Byte 1
Byte 0
Byte 4
Byte 5
1
1
1
1
1
1
1
1
S S S S S S S S
S
S
1
S
S
2
1
S
S
S
2
0
7
8
15
16
23
0
7
8
15
16
23
BIT #
BIT #
DPRAM
BYTE
NO.
(RELATIVE)
0
1
2
3
1
2
3
24 BITS
PMAC WORD:
48 BITS
PMAC Y: WORD
PMAC X: WORD
PMAC X: WORD
DPRAM
BYTE
NO.
(RELATIVE)
0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
(SIGN EXTENSION)
(SIGN EXTENSION)
(SIGN EXTENSION)
S = Sign bit
1
S
= First word sign bit
= Second word sign bit
= Exponent for floating point
= Second word sign bit
= Exponent for floating point
S
2
Byte 3
Byte 3
S
2
S
2
S
2
S
2
S
2
S
2
S
2
S
2
S S S S S S S S