Debug and video queue for multi-processor chip

Details Debug and video queue for multi-processor chip Debug and video queue for multi-processor chip

1996-10-25

1998-12-08

Teska, Kevin J.

G06F 9455

Patent

active

058482644

ABSTRACT:
A microprocessor die contains several processor cores and a shared cache. Trigger conditions for one or more of the processor cores are programmed into debug registers. When a trigger is detected, a trace record is generated and loaded into a debug queue on the microprocessor die. Several trace records from different processor cores can be rapidly generated and loaded into the debug queue. The external interface cannot transfer these trace records to an external in-circuit emulator (ICE) at the rate generated. The debug queue transfers trace records to the external ICE using a dedicated bus to the ICE so that bandwidth is not taken from the memory bus. The memory bus is not slowed for debugging, providing a more realistic debugging session. The debug buffer is also used as a video FIFO for buffering pixels for display on a monitor. The dedicated bus is connected to an external DAC rather than to the external ICE when debugging is not being performed.

REFERENCES:
patent: 5313618 (1994-05-01), Pawloski et al.
patent: 5321828 (1994-06-01), Phillips et al.
patent: 5329273 (1994-07-01), Patton
patent: 5357626 (1994-10-01), Johnson et al.
patent: 5392420 (1995-02-01), Balmer et al.
patent: 5410547 (1995-04-01), Drain
patent: 5479634 (1995-12-01), Takita
patent: 5486876 (1996-01-01), Lew et al.
patent: 5493315 (1996-02-01), Atchley
patent: 5493637 (1996-02-01), Martin
patent: 5546562 (1996-08-01), Patel
patent: 5564041 (1996-10-01), Matsui et al.
patent: 5594890 (1997-01-01), Yamuaura et al.
patent: 5630102 (1997-05-01), Johnson et al.
patent: 5680583 (1997-10-01), Kuijsten
patent: 7510934 (1998-01-01), Bona et al.

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