| OSSetSR | Function (ROM Call 0x29C)

system.h

short OSSetSR (short SR);

Sets the processor status register.

OSSetSR sets the processor status register to SR. Supervisor and trace bits cannot be set up using this routine. For example, use

    OSSetSR (0x0700);

to disable all interrupts, and

    OSSetSR (0x0000);

to enable them again. Note that any call to keyboard input routines like ngetchx etc. will enable interrupts again.
OSSetSR returns the previous contents of the status register.
Note: Disabling Auto-Int 1 is often used for making the status line indicators not visible on the screen so that the status indicators do not mess up your graphics (status line indicators are updated from this interrupt). In this case, you need to read the keyboard using _rowread function, because functions like ngetchx are based on Auto-Int 1. However, if you disable interrupts, the grayscale will not work, because the grayscale is also based on Auto-Int 1. To solve this problem, instead of disabling Auto-Int 1, you may redirect it to nothing. See DUMMY_HANDLER from intr.h for more info.

Used by: Dialog, ERD_dialog, HomeExecute, kbhit, ngetchx, pushkey, ROM Call 0x3EA