Topic       : TOS - The Operating System
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Subject     : Programmieren/Atari
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View Ref-File4.11.22  Dsp_Lock                                                  TOS

 Name:         »Dsp_Lock« - Inquire availability of the DSP

 Opcode:       104

 Syntax:       int16_t Dsp_Lock( void );

 Description:  The function Dsp_Lock inquires whether the DSP is 
               available for calling applications and has not been 
               blocked by something else.

 Return value: The function returns the value -1 if the DSP is being 
               used already by another process. A return value of 0 on 
               the other hand signifies the availability of the DSP 
               and blocks this simultaneously for others, until a call 
               of Dsp_Unlock is received.

 Availability: The function is available only on computers with the 
               DSP-56001 signal processor.

 Group:        DSP programming

 See also:     Binding   Dsp_Unlock   Dsp_Available   Dsp_Reserve 
               Dsp_LoadProg   Dsp_ExecProg   Dsp_ExecBoot