R41 + no SD Card => Doesn't throw error

[stefan-b-jakobsson]

I think the R41 release candidate doesn't work properly if there is no SD Card image mounted.

You would expect "Device not present" to be thrown when trying to open and read a file in this situation.

Error checks I've done:

• Check if carry bit is set after calling OPEN
• Check if carry bit is set after calling CHKIN
• Calling READST after each CHRIN, checking for any non zero return value

Non of the above caught the error (or even EOI).

[markjreed]

If there's no SD card image, it falls back to the host filesystem, right?

[stefan-b-jakobsson]

Yes.
So it shouldn't say device not present.
The problem is really that when reading a file byte by byte with Kernal functions, it doesn't say file not found, if you have no SD card