26 lines
582 B
ArmAsm
26 lines
582 B
ArmAsm
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// This is the entry point of the ROM.
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// It is limited to 32-bit MIPS-I code,
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// because it runs on both the EE and the IOP.
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//
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// The task of this relatively short bit of code
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// is to start the approiate part of the ROM
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// on the correct processor.
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//
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// It's a bit creative, but also a bit annoying.
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.org 0
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.set noat
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// externs
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.extern _ee_start
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.globl _start
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_start:
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mfc0 $at, $15 // load the PRID
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sltiu $at, 0x59 // Check for EE PRID
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bne $15, 0, __iop // Branch if not EE
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nop
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j _ee_start // Call EE start routine
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nop
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__iop: // for now the iop stalls.
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j __iop
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