All Databases Inside Mac - Basic Toolbox

SetUpA5

SetUpA5 Save value of A5 register and setup for application

#include <OSUtils.h> Operating System Utilities

void SetUpA5();

SetUpA5 saves the current value of the A5 register and sets A5 to the value

of the global variable CurrentA5; i.e., the address at which the current

application's parameters begin.

Notes: SetUpA5 and Re storeA5 have been supplanted by SetCurrentA5 and

You can use SetUpA5 ... Re storeA5 bracketing functions in which it is

possible that the all-important A5 register has a value other than the

setting when the application began.

You might need this in an asynchronous file I/O completion task (see

PBWrite), vertical retrace tasks (see VInstall), and other interrupt

handlers.

Referenced by (9):