Service_USB 19 - Resume halted shutdown
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## Name

Service_USB 19 - Resume halted shutdown — Used to resume a claimed stop service when ready to continue.

## On Entry

R0 | 19 (reason code)
R1 | &80C00 (USB Service call)
R2, R3, R4 | Same as Service_USB 16

## On Exit

R0 | preserved
R1 | 0 to claim or preserved to pass on.(do not claim)
R2, R3, R4 | preserved

## Use

The program which stopping sequence has been rejected by the program which launches this call to re-initiate this stopping process must claim this call if it is willing to re-initiate stopping. Whether the module supports this call or not is depending on the module itself.

### Warning

This call is currently not implemented. Do not use.

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