AN2757 Freescale Semiconductor / Motorola, AN2757 Datasheet - Page 24

• Manufacturer Part Number: AN2757
• Description: MPC5200 Quick Start
• Manufacturer: Freescale Semiconductor / Motorola

Graphical Configuration Tool
Figure 22. System Integration Module Control Page (SIM)
6.6.6
Interrupt Controller (SIM / ICTL)
The Interrupt Controller (ICTL) pages contain graphical controls for both the hardware registers of the ICTL module as well as
the controls for the MPC5200_Quick_Start Interrupt Dispatcher configuration.
Without an Interrupt Dispatcher enabled, only the G2 PowerPC exception service routines can be specified in the GCT (only the
“vectors.asm” source file is implemented - see
Section 5.4, Interrupt
Dispatcher).
Enabling the Interrupt Dispatcher causes three external exception handlers (0x0500, 0x0A00 and 0x1400) to be hard-routed to
the MPC5200_Quick_Start implementation of the Dispatcher and the user is not allowed to specify his own handlers for them.
On the other side, thanks to the Interrupt Dispatcher, the user is then able to specify handler routines for each peripheral interrupt
source mapped to any of those exceptions.
Using another check-box, a support for Floating Point context saving can be enabled in the Interrupt Dispatcher. A Floating Point
context save can then be selectively enabled for individual peripheral interrupt service routines
(Figure
24).
AN2757 MPC5200 Quick Start and Graphical Configuration Tool
24
Freescale Semiconductor