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Intel® 460GX Chipset Software Developer’s Manual 2-15
Register Descriptions
26 ’Forward’ Overlapping ’Forward’; Card A (FWMDI1)
Indicates FWMDI sampled asserted while a store transaction is in progress
25 ’Load’ Overlapping ’Load’; Card A (LRMDI1)
Indicates LRMDI sampled asserted while a store transaction is in progress
24 ’Load’ Overlapping ’Forward’; Card A (WrRd1)
Memory interface 1 detected simultaneous read and write operation. Write and Read
collision.
23 ’Forward’ Overlapping ’Load’; Card A (RdWr1)
Memory interface 1 detected simultaneous read and write operation. Read and write
collision.
22 ’Forward’ Underflow; Card A Right Stack Error (FR1)
Memory interface 0 received Forward right Bank without corresponding Store command
21 ’Forward’ Underflow; Card A Left Stack Error (FL1)
Memory interface received Forward left Bank without corresponding Store command
20 ’Accept Underflow’; Card A (AE1)
Memory interface 0 received data without corresponding Accept command
19 ’Forward’ Overlapping ’Forward’; Card B (FWMDI0)
Indicates FWMDI sampled asserted while a store transaction is in progress
18 ’Load’ Overlapping ’Load’; Card B (LRMDI0)
Indicates LRMDI sampled asserted while a store transaction is in progress
17 ’Load’ Overlapping ’Forward’; Card B (WrRd0)
Memory interface 1 detected simultaneous read and write operation. Write and Read
collision.
16 ’Forward’ Overlapping ’Load’; Card B (RdWr0)
Memory interface 1 detected simultaneous read and write operation. Read and write
collision.
15 ’Forward’ Underflow; Card B Right Stack Error (FR0)
Memory interface 0 received Forward right Bank without corresponding Store command
14 ’Forward’ Underflow; Card B Left Stack Error (FL0)
Memory interface received Forward left Bank without corresponding Store command
13 ’Accept’ Underflow; Card B (AE0)
Memory interface 0 received data without corresponding Accept command
12 Configuration Information Parity Error (CIE)
Data buffer detected data parity while reading config address or data from SDC RAM.
11 Response Bus Transmission Error (RTE)
Indicates that the SDCRSP bus detected a transmission error.
10 PDB - ITID Parity Error (IPE)
Look in ITID_FERR Register to isolate.
9 PDB - Command Parity Error (CPE)
Look in CMD_FERR Register to isolate.
8 PDB Byte Enable Parity Error (BPE)
Parity error on the Byte-enables from the SAC.
7 SDC Data Buffer RAM Parity Error (RPE)
SDC detected bad parity on good data stored in its data buffer. Indicates potential RAM
cell disturbance due to alpha or cosmic hit. All four data port map to this bit.
6 PDB - Data Parity Error (DPE)
Parity Error Detected on transfer of Data from SAC to SDC.