Table 3-20. Syndrome Codes Ordered By Bit In Error; Ecc Codes - Motorola MVME2300 Series Programmer's Reference Manual

Table 3-19. PowerPC 60 x Address to DRAM Address Mappings
RA ----> 0
Block Size
|
V
ROW A3
1024MB
COL A2

ECC Codes

When the Falcon reports a single-bit error, software can use the syndrome
that was logged by the Falcon (upper or lower depending where the error
occurred) to determine which bit was in error.
syndrome for each possible single bit error.
information ordered by syndrome. In order to relate this information to
PowerPC addresses and bit numbers, the user needs to understand how the
Falcon pair positions PowerPC data in DRAM. See the section on
Paths
Note that these tables are the same whether the Falcon is configured as
upper or as lower device.

Table 3-20. Syndrome Codes Ordered by Bit in Error

Bit Syndrome Bit Syndrome Bit Syndrome Bit Syndrome Bit Syndrome
rd0 $4A rd16
rd1 $4C rd17
rd2 $2C rd18
rd3 $2A rd19
rd4 $E9 rd20
rd5 $1C rd21
rd6 $1A rd22
rd7 $19 rd23
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1 2 3 4
A5 A7 A8 A9
A4 A6 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27
for an explanation of this.
$92 rd32
$13 rd33
$0B rd34
$8A rd35
$7A rd36
$07 rd37
$86 rd38
$46 rd39
Software Considerations
5 6 7 8
A10 A11 A12 A13 A14 A15 A16 A17
Table 3-20
Table 3-21
$A4 rd48 $29
$C4 rd49 $31
$C2 rd50 $B0
$A2 rd51 $A8
$9E rd52 $A7
$C1 rd53 $70
$A1 rd54 $68
$91 rd55 $64
9 10 11 12
shows the
shows the same
Data
ckd0 $01
ckd1 $02
ckd2 $04
ckd3 $08
ckd4 $10
ckd5 $20
ckd6 $40
ckd7 $80
3-57
3