Board:via/epia: Difference between revisions
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|+ Values determined by testing various modules with the factory BIOS. | |+ Values determined by testing various modules with the factory BIOS. | ||
!DIMM size!!Row Density (SPD 31)!!Width (SPD 13)!!Rows(SPD 5)!!MA map type | !DIMM size!!Row Density (SPD 31)!!Width (SPD 13)!!Rows(SPD 5)!!MA map type!!Works | ||
|- | |- | ||
!512MB | !512MB | ||
|256MB||8||2||0xe (111) | |256MB||8||2||0xe (111)|| Yes (benh) | ||
|- | |- | ||
!256MB | !256MB | ||
|128MB||16||2||0xc (110) | |128MB||16||2||0xc (110)|| No (hawke) | ||
|- | |- | ||
!128MB | !128MB | ||
|128MB||16||1||0xc (110) | |128MB||16||1||0xc (110)|| No (hawke) | ||
|- | |- | ||
!128MB | !128MB | ||
|64MB||8||2||0x8 (100) | |64MB||8||2||0x8 (100) || Yes (benh) | ||
|- | |- | ||
!64MB | !64MB | ||
|64MB||8||1||0x8 (100) | |64MB||8||1||0x8 (100) || Yes (hawke) | ||
|} | |} | ||
{{PD-self}} | {{PD-self}} | ||
Revision as of 20:47, 4 June 2007
Current problems
- Mixing of memory widths appears to cause memory errors. The 256MB and 64MB DIMM from the table below show memory errors when installed together. Single-row memory might also be a problem, as the 128M single-row module gives errors. Double-row memory might also be a problem, as the 256M gives errors.
- shutting down system does not turn off power.
- Hangs at ram detection. Patch available 2007-06-04
Previous problems
- MA map type is set incorrectly for some types of DIMM. Fixed as of r2653.
MA Map Types
The values for MA map type refer to bits 15-13, 7-5, and 3-1 of offset 0x59-0x58 of the VT8601A host bridge. See the VT8601/PLE133 data sheet for details. All values other than 0xx and 100 are documented as "reserved (do not program)"
| DIMM size | Row Density (SPD 31) | Width (SPD 13) | Rows(SPD 5) | MA map type | Works |
|---|---|---|---|---|---|
| 512MB | 256MB | 8 | 2 | 0xe (111) | Yes (benh) |
| 256MB | 128MB | 16 | 2 | 0xc (110) | No (hawke) |
| 128MB | 128MB | 16 | 1 | 0xc (110) | No (hawke) |
| 128MB | 64MB | 8 | 2 | 0x8 (100) | Yes (benh) |
| 64MB | 64MB | 8 | 1 | 0x8 (100) | Yes (hawke) |
|
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