Table 7.3 shows
the RAM configuration with or without ECC.
Table 7.3. RAM configuration with or without ECC
| RAM | Storage for a RAM set without ECC | Storage for a RAM set with ECC |
|---|
| Data tag RAM | 4x29 bits | 4x(25+7) bits |
| Data data RAM | 8x32 bits | 8x(32+7) bits |
| Instruction tag RAM | 4x21 bits | 4x(21+7) bits |
| Instruction data RAM | 4x64 bits | 4x(64+8) bits |
| SCU tag RAMs | 4x23 bits | 4x(23+7) bits |
| Data TCM | 2x32 bits | 2x(32+7) bits |
| Instruction TCM | 4x64 bits | 4x(64+8) bits |
Table 7.4 shows
the RAM configuration with or without parity.
Table 7.4. RAM configuration with or without parity
| RAM | Storage for a set without parity | Storage for a set with parity |
|---|
| BTAC | 2x32+2x28 bits | 2x(32+4) + 2x(28+4) bits |
| PRED | 4x4 bits | 4x(4+4) bits |
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