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Note that msim diverges from real MIPS hardware in some aspects.
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Note that msim diverges from real MIPS hardware in some aspects.
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Therefore, some non-trivial changes will be necessary for a real
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Therefore, some non-trivial changes will be necessary for a real
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hardware port. The simulator is described in this manual:
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hardware port. The simulator is described in this manual:
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http://nenya.ms.mff.cuni.cz/~holub/msim/msim.ps
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http://nenya.ms.mff.cuni.cz/~holub/msim/msim.ps
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You'll need a msim.conf script like this:
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	#
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	# MSIM configuration script
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	#
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	add dcpu mips1
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	add rwm 	mainmem		0               16M	load "kernel.bin"
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	add rom 	startmem        0x1fc00000	1k      load "load.bin"
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	add dprinter    printer         0x10000000
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BOOTSTRAP
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=========
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Because the mips port uses binary executable format and for some other
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architectural reasons, it shares one address for bootstrap entry
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(address where control is passed from loader) and for TLB refill
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exception entry. The former is used only once during system bootstrap.
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From that point further, only TLB refill exception entry uses that
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address. Note that this is the reason why main_bsp() is called from
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tlb_refill() code.
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