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Old 06 September 2016, 09:37   #1
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Join Date: Aug 2004
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SASI drive error codes

Following from this post in the recent T-Disk: initialization failure, it seems WinUAE's response to REQUEST SENSE commands is wrong for emulated SASI controller/drive. Or at least, it doesn't match what the Xebec S1410A manual says.

REQUEST SENSE STATUS (command $03) returns four bytes, and for an attempted out-of-bounds access the first byte (error code) would be $21 ("illegal disk address: the controller detected an address that is beyond the maximum range"). The address valid bit would be set though, so $A1 followed by three LBA bytes. See page 43 of the Xebec S1410A manual.
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