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                     Nios2ץå¸ޥ˥奢
                                  Last Modified: 14 Jul 2009 10:49:00
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Nios2ץå¸ʰʲNios2¸ˤϡAlteraҤNios2ץ
 򥿡åȤȤƤ롥ݡȤƤ NiosII ٥ǥåɡǥ
󡦥 ΥСϡ8.1 Ǥ롥ʹߤΥС˴ؤ
Ƥϡץå䥳ѥ礭ѹʤСư뤳Ȥ
ǽǤ롥

Nios2ϡեȥץåǤ뤿ᡤιղϩι
ɥ쥹ѹ뤳ȤǽǤ롥Nios2¸Ǥϡץå
ȥޡAvalon TimerˤUARTJTAG UARTˤΤߤ򥵥ݡȤƤ롥
ɥ쥹˴ؤƤϡåȰ¸ꤹ롥

ȯĶ

ͥΥѥϡNiosII ٥ǥåɡǥ󡦥 °
Ƥ롤GCC Ѥ롥ưǧԤʤäСϡ3.4.6 Ǥ롥



FMPͥϡNios2 ɸιư롥¾ɲ̿div
multiˤϻѤƤʤɲ̿Ѥϡ
Ȱ¸Ŭڤ˥ѥ륪ץꤹɬפ롥ʤFPU 
MMU MPU ϥݡȤƤʤ

㳰˴ؤƤϡ̤̿ʳ㳰ѤMMUMPUɲû
ϡåȰ¸ NIOS2_USE_EXTRA_EXCEPTION 뤳ȡ

֤߱®ϡ̿ȤơInterrupt 
Vector Instruction ɲä뤳Ȥǹ®ǽǤ롥

ղϩ

FMPͥư뤿ˤϡղϩȤơUARTJTAG UARTˡ
ޡAvalon Timerˡץåֳ߲ϩ򤽤줾1ĤġMutex
2ĤɬפȤʤ롥Avalon TimerϡPresets  Custom Ȥ
Registers ͭȤ롥ޤ줾ߤѤ褦ꤹ
롥ץåֳ߲ϩϡNios2ˤϴޤޤƤ餺ܥǥ쥯ȥ
ˤ prc_int Ѥ뤳ȡ

CPU㳰ϥɥֹ

CPU㳰ϥɥֹȤƤϡexception 쥸CAUSEեɤ˥
ȤͤѤ롥

CPU㳰ե졼

CPU㳰ϥɥΰϤCPU㳰ե졼ι򼡤˼

                       եå
 㳰ֹ                       0
 status쥸                 4
 ߡ㳰ͥȥ     8
 ꥢɥ쥹                  12
 ͥ٥ޥ(ipm)       16

Trap㳰

Trap㳰Υϥɥϡprc_support.S ǡtrap_handler ȤѰդƤ
롥ǥեȤǤϡñ˥꥿󤹤롥

̤Ͽ㳰ȯ

̤Ͽ㳰ȯϡprc_config.c Ƥ롥
default_exc_handler() ƤӽФ롥default_exc_handler() ϡȯ
㳰ΡCPU㳰ե졼Ƥɽ塤target_exit() ƤӽФ

ߥϥɥֹȳֹ

ߥϥɥֹ(inhno)ȳֹ(intno)ϡSOPC Builder ǻꤷ
ֹѤ롥

ͥ/γ

Nios2¸ǤϡͥγߤϥݡȤʤ

ͥ

CFG_INT˻ǽʳͥ٤ȤƤϡ-1  -7 ޤǤͤǽ
Ǥ롥

°

CFG_INTǥݡȤƤ°Ϥʤ

̤Ͽγ

̤Ͽγߤȯϡprc_config.c Ƥ롤
default_int_handler() ƤӽФdefault_int_handler() ϡȯ
ߤγֹ򥳥󥽡˽Ϥ塤target_exit() ƤӽФ

ǥХؿ

Nios2Ǥϡ֤I/O֤̤Ƥʤǡåͭ
Ȥ硤å򥹥롼ƥǥХ˥̿Ѥ
ǥХ򥢥ɬפ롥ΤᡤNios2¸Ǥϡå
򥹥롼ƥI/O֥ؿѰդƤ롥

	sil_reb_iop
	sil_wrb_iop
	sil_reh_iop
	sil_wrh_iop
	sil_rew_iop
	sil_wrw_iop

åȰ¸ȯԸξ

åȰ¸ǤϡڥեΥ١ɥ쥹ֹ桤
ꤹɬפ롥ɸǥѥåˤ2Υϡɥ
ptfե뤬ޤޤƤ롥

֤߱ι®

֤߱®뤿ˤϡInterrupt Vector Instruction 
̿ȤɲäưʲΥޥ롥

#define NIOS2_USE_INT_VEC_INST       /* Interrupt Vector Instruction Ȥ */
#define NIOS2_INT_VEC_INST_NO    x   /* ֹ̿                            */

С

2009/07/14
 CPU㳰ֹפʤϡ㳰ֹפCPU㳰ϥɥֹפ졥

2009/04/28
 sio_isr() ΰη intptr_t ѹ

2009/02/02
 ǽΥ꡼

ʾ塥
