Difference between revisions of "83Plus:BCALLs:80ED"
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Revision as of 18:06, 5 November 2006
Synopsis
Unofficial Name: ControlCmdFailed
BCALL Address: 80ED
Checks for success/failure on a USB control request.
Inputs
- None
Outputs
- C set if NAK or Stall
Destroys
- A
Comments
This BCALL outputs 0 to port 8Eh and checks bits 2 and 4 of port 91h. If either are set, this function returns carry set.
Example
B_CALL ControlCmdFailed jr c,commandFailed
