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• isr_ptr getvect( unsigned intrno )<br />
Gets the address of the handler of interrupt number intrno. For this<br />
<strong>function</strong>, number must be even and less than 255. The <strong>function</strong> returns<br />
the address of the handler. The type isr_ptr is a pointer to a <strong>function</strong><br />
that returns void and takes no arguments.<br />
• void setvect( unsigned intrno, isr_ptr isr )<br />
Sets a new handler isr for interrupt number intrno. The term<br />
intrno must be even and less than 255. The type isr_ptr is a<br />
pointer to a <strong>function</strong> that returns void and takes no arguments.<br />
• int iff( void )<br />
Checks whether the interrupt flag is on. The <strong>function</strong> returns 1 if the<br />
interrupt flag is on, and 0 otherwise.<br />
• void setireg( char value )<br />
Sets the Z180 interrupt register with the upper 8 bits of the specified<br />
16-bit value.<br />
• char readireg( void )<br />
Returns the value of the Z180 interrupt register as the upper 8 bits of<br />
the returned value. The lower 8 bits are set to zero.<br />
• void _prot_init( void )<br />
Performs super initialization. The <strong>function</strong> initializes internal data<br />
needed for recovery of protected variables after a crash. To ensure<br />
that the protection mechanism works, call this <strong>function</strong> once in a<br />
program before any protected variables are set.<br />
• void _prot_recover( void )<br />
Performs recovery of a partially completed assignment to a protected<br />
variable. Call this <strong>function</strong> after a power failure or a similar<br />
situation that does not lose memory.<br />
• void reload_vec( unsigned vector, int(*isr)() )<br />
Loads an interrupt service routine to specified vector location at run<br />
time. vector is the interrupt vector to be served, *isr is the address<br />
of the interrupt service routine.<br />
reload_vec writes to the Flash EPROM memory when<br />
executed on a controller which is Flash EPROM equipped.<br />
Since <strong>Dynamic</strong> C 32 v. 6.30, reload_vec prevents rewriting<br />
!<br />
existing Flash data because the Flash has a maximum life of<br />
about 10,000 writes. Exercise care to ensure that the application<br />
does not call reload_vec to write different data repeatedly<br />
to the same Flash address.<br />
34 s General Support Libraries<br />
<strong>Dynamic</strong> C 32 v. 6.x
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