System self-test: Difference between revisions
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Revision as of 04:35, 12 October 2016
Todo: Order of checks.
Cartridge systems
Information by Channelmaniac.
| Error | No game | WORK RAM ERROR | COLOR RAM ERROR | VIDEO RAM ERROR | SYSTEM ROM ERROR | MEMORY CARD ERROR |
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| MVS |  Crosshatch
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Screenshot needed |
| Meaning | All tests passed (AES does not test the Z80). Cartridge not detected. | 68k user RAM R/W error | Palette RAM R/W error | VRAM R/W error | System ROM checksum mismatch | Memory card R/W error (only tested if card present and blank) |
MVS checks
Additionnal checks are performed on MVS systems:
| Error | BACKUP RAM ERROR | Calendar freeze | CALENDAR ERROR | Z80 ERROR |
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| Meaning | Backup RAM R/W error | RTC isn't giving Time Pulse | RTC ran to slow or too fast | Z80 didn't reply to command |
When a MVS board is powered up without cartridges inserted, the border color around the edges of the crosshatch screen indicates the system ROM region:
- Green: 6 slot (ROM name ?)
- Cyan: USA, SPU2
- Blue: Spanish, SPS2
- Red: Japanese, SPJ2
UniBios tests
The Universe BIOS does not use the above color codes to indicate errors.