Computer Hardware User Manual

Table Of Contents
4-36 Computer Group Literature Center Web Site
MCECC Functions
4
Syndrome Decoding
The following table defines the syndrome bit encoding for the
Petra/MCECC ASIC. A syndrome code value of $00 indicates no error
found. All other syndrome code values denote an error. The bit in error is
decoded as shown in the table.
Table 4-4. Syndrome Bit Encoding
Bit in Error Syndrome Code Bit in Error Syndrome Code
Bit 0 $4F Bit 16 $0E
Bit 1 $4A Bit 17 $0B
Bit 2 $52 Bit 18 $13
Bit 3 $54 Bit 19 $15
Bit 4 $57 Bit 20 $16
Bit 5 $58 Bit 21 $19
Bit 6 $5B Bit 22 $1A
Bit 7 $5D Bit 23 $1C
Bit 8 $23 Bit 24 $62
Bit 9 $25 Bit 25 $64
Bit 10 $26 Bit 26 $67
Bit 11 $29 Bit 27 $68
Bit 12 $2A Bit 28 $6B
Bit 13 $2C Bit 29 $6D
Bit 14 $31 Bit 30 $70
Bit 15 $34 Bit 31 $77
Check Bit 0 $01 Check Bit 4 $10
Check Bit 1 $02 Check Bit 5 $20
Check Bit 2 $04 Check Bit 6 $40
Check Bit 3 $08