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30 lines
498 B
30 lines
498 B
2 years ago
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.include "instr.inc"
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.text
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.set org, 0xf753
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.global _start
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_start:
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# Relocate
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ld_r1 (stack - main)
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ld_r2 main
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ld_r3 (main - 0x2000 + org)
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call MemCpy
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jp main
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main:
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# Receive a replacement monitor rom
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ld_r3 0xf000
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main_loop:
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copr_getc
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strb_r0_r3
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inc_r3
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cp_r3 0
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jp_ne main_loop
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jp 0xf000
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.fill (0xfe00 - org) - (. - _start), 1, 0x00
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stack:
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.byte 0x12, 0x34, 0x56, 0x78 # Replace with stack cookie
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.fill (0x100 / 2) - 2, 2, org
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