Effect

Displays the error code stored whenever a USB transaction fails for any reason.

Note: only the error for the last executed USB transaction is stored and can therefore be displayed.

If the error happened at the USB physical or protocol level, you will see it as `USB error`.

If what failed was the execution of an UFI command, you will see the ASC and ASCQ codes (as defined by the UFI specification).

Syntax

CALL USBERROR

Example

You can try this instruction by executing `FILES` without a disk in the drive; after getting the "Disk offline" error, CALL USBERROR should present you this (3Ah is the UFI error "MEDIUM NOT PRESENT"):

   ASC:  3Ah
   ASCQ: 00h

Links

• UFI Command Specification (see especially pages 49 to 53)

Related to

CALL USBRESET

Compatibility

RookieDrive BASIC