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Hi Boaz I see on p.4-13 of the 56800 Family Manual (ITCN), a test register TCSR, with bits 8..13 called "vector". That's just enough bits to encode the 64 interrupt vectors. Text says that these bits "show the output of the current active vector". Maybe it will reveal what tripped your unhandled IRQ. If it does, would you let us know? If anyone with more of a clue has a clue, by all means correct me. It looks like TCSR is at ITCNBase+$1C, or 0x0E7C on the 56803. Your address may vary, on the 56827. Rick Corey -----Original Message----- From: bmbmz123 [mailto:] Sent: Thursday, December 25, 2003 3:52 AM To: Subject: [motoroladsp] DSP56F827 - Un-handled Interrupt: finding source?? Hello all, It seems I'm getting Unhandled Interrupt from some source. I get to archUnhandledInterrupt() in arch.c file. How can I find the source of this interrupt when I reach this routine? I am not THAT familiar with the ITCN registers and operation. I am using CW ver 4.1 and SDK version 2.4.1. chip=DSP56F827. thanks boaz _____________________________________ /groups.php3

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Hi again Well, trapping inside an ISR doesn't tell me much about TCSR. If I'm looking at the right location, I just see "0000", no vector. FWIW, the debugger lit that word (0x0E7C) up in red, as if it had just changed value. Corey -----Original Message----- From: Corey, Rick [mailto:] Sent: Tuesday, December 30, 2003 11:45 AM To: 'bmbmz123'; Subject: RE: [motoroladsp] DSP56F827 - Un-handled Interrupt: finding sour ce?? Hi Boaz I see on p.4-13 of the 56800 Family Manual (ITCN), a test register TCSR, with bits 8..13 called "vector". That's just enough bits to encode the 64 interrupt vectors. Text says that these bits "show the output of the current active vector". Maybe it will reveal what tripped your unhandled IRQ. If it does, would you let us know? If anyone with more of a clue has a clue, by all means correct me. It looks like TCSR is at ITCNBase+$1C, or 0x0E7C on the 56803. Your address may vary, on the 56827. Rick Corey -----Original Message----- From: bmbmz123 [mailto:] Sent: Thursday, December 25, 2003 3:52 AM To: Subject: [motoroladsp] DSP56F827 - Un-handled Interrupt: finding source?? Hello all, It seems I'm getting Unhandled Interrupt from some source. I get to archUnhandledInterrupt() in arch.c file. How can I find the source of this interrupt when I reach this routine? I am not THAT familiar with the ITCN registers and operation. I am using CW ver 4.1 and SDK version 2.4.1. chip=DSP56F827. thanks boaz _____________________________________ /groups.php3 _____________________________________ /groups.php3

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