SYSTEM ROM ERROR: Difference between revisions
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*Did you buy that UniBios on eBay ? Check that the EPROM is fast enough. | [[File:error_sysrom.png|thumb]] | ||
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The [[system ROM]]'s checksum was found to be incorrect. This error is rather rare because a bad readback of the system ROM would often cause the system to crash or get stuck in a [[Click of death|boot-loop]] before being able to show the error. | |||
* PCB damage ? Address lines from the [[68k]] may be cut. If so, it's probably the higher ones. | |||
* Did you buy that UniBios on eBay ? Check that the EPROM is [[memory speed|fast enough]]. | |||
* If an EPROM is used and its window isn't covered, it might be partially erased. Erase it completely and reprogram it. | |||
[[Category:Repairs]] | [[Category:Repairs]] | ||
Latest revision as of 19:21, 11 April 2020
The system ROM's checksum was found to be incorrect. This error is rather rare because a bad readback of the system ROM would often cause the system to crash or get stuck in a boot-loop before being able to show the error.
- PCB damage ? Address lines from the 68k may be cut. If so, it's probably the higher ones.
- Did you buy that UniBios on eBay ? Check that the EPROM is fast enough.
- If an EPROM is used and its window isn't covered, it might be partially erased. Erase it completely and reprogram it.