openMSP430
HALT mode and IRQ #3
Closed olivier.girard opened this issue almost 14 years ago
olivier.girard commented almost 14 years ago
This bug is relevant for people using BOTH the Serial Debug Interface and the IRQs.
When the CPU is Halted through the serial debug interface and if an IRQ occures during this time, then the CPU will go wild when the CPU goes out of halt mode.
olivier.girard commented almost 14 years ago
The bug is fixed with the SVN version 91. The following modification has been done to the omsp_frontend.v RTL file:
ORIGINAL CODE: "... assign irq_detect = (inst_nmi | ((|irq | wdt_irq) & gie)) & ~dbg_halt_cmd & (exec_done | (i_state==I_IDLE)); ..."
NEW CODE: "... assign irq_detect = (inst_nmi | ((|irq | wdt_irq) & gie)) & ~dbg_halt_cmd & ~dbg_halt_st & (exec_done | (i_state==I_IDLE)); ..."
In addition, the dbg_halt_irq test pattern reproducing the bug has been added to the regression suite.
olivier.girard closed this almost 14 years ago
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