Created
January 1, 2023 23:16
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| m68k-none-elf-as -g main.s -o main.o | |
| m68k-none-elf-ld -T main.lds main.o -o main.elf | |
| m68k-none-elf-objcopy -O binary main.elf main.bin |
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| OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k") | |
| OUTPUT_ARCH(m68k) | |
| MEMORY | |
| { | |
| rom (arx) : ORIGIN = 0x0000000, LENGTH = 4M | |
| } | |
| SECTIONS | |
| { | |
| .text : | |
| { | |
| . = 0x000; | |
| KEEP(*(.vectors)) | |
| . = 0x100; | |
| KEEP(*(.header)) | |
| . = 0x200; | |
| *(.text) | |
| } > rom | |
| } |
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| .section .vectors | |
| .long 0x0 /* Reset - initial stack pointer */ | |
| .long start /* Reset - initial program counter */ | |
| .long start /* Bus error */ | |
| .long start /* Address error */ | |
| .long start /* Illegal instruction */ | |
| .long start /* Divide by zero */ | |
| .long start /* CHK exception */ | |
| .long start /* TRAPV exception */ | |
| .long start /* Privilege violation */ | |
| .long start /* Trace */ | |
| .long start /* Line 1010 emulator */ | |
| .long start /* Line 1111 emulator */ | |
| .long start /* reserved */ | |
| .long start /* co-processor protocol violation */ | |
| .long start /* format error */ | |
| .long start /* Uninitialized interrupt */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* reserved */ | |
| .long start /* Spurious interrupt */ | |
| .long start /* Level 1 interrupt autovector */ | |
| .long start /* Level 2 interrupt autovector */ | |
| .long start /* Level 3 interrupt autovector */ | |
| .long start /* Level 4 interrupt autovector (vdp horizontal) */ | |
| .long start /* Level 5 interrupt autovector */ | |
| .long start /* Level 6 interrupt autovector (vdp vertical) */ | |
| .long start /* Level 7 interrupt autovector */ | |
| .long start /* Trap #0 vector */ | |
| .long start /* Trap #1 vector */ | |
| .long start /* Trap #2 vector */ | |
| .long start /* Trap #3 vector */ | |
| .long start /* Trap #4 vector */ | |
| .long start /* Trap #5 vector */ | |
| .long start /* Trap #6 vector */ | |
| .long start /* Trap #7 vector */ | |
| .long start /* Trap #8 vector */ | |
| .long start /* Trap #9 vector */ | |
| .long start /* Trap #10 vector */ | |
| .long start /* Trap #11 vector */ | |
| .long start /* Trap #12 vector */ | |
| .long start /* Trap #13 vector */ | |
| .long start /* Trap #14 vector */ | |
| .long start /* Trap #15 vector */ | |
| .long start /* (fp) branch or set on unordered condition */ | |
| .long start /* (fp) inexact result */ | |
| .long start /* (fp) divide by zero */ | |
| .long start /* (fp) underflow */ | |
| .long start /* (fp) operand error */ | |
| .long start /* (fp) overflow */ | |
| .long start /* (fp) signaling nan */ | |
| .long start /* (fp) unimplemented data type */ | |
| .long start /* mmu configuration error */ | |
| .long start /* mmu illegal operation error */ | |
| .long start /* mmu access violation error */ | |
| .long start /* reserved (not used) */ | |
| .long start /* reserved (not used) */ | |
| .long start /* reserved (not used) */ | |
| .long start /* reserved (not used) */ | |
| .long start /* reserved (not used) */ | |
| .section .header | |
| .ascii "SEGA GENESIS " | |
| .ascii " " /* Release year.month */ | |
| .ascii " " /* Japan Title */ | |
| .ascii " " /* */ | |
| .ascii " " /* */ | |
| .ascii " " /* US Title */ | |
| .ascii " " /* */ | |
| .ascii " " /* */ | |
| .ascii " " /* product #, version */ | |
| .word 0 /* check sum */ | |
| .ascii "J " /* controller */ | |
| .long 0x00000000, 0x0007ffff /* ROM address range */ | |
| .long 0x00ff0000, 0x00ffffff /* RAM address range */ | |
| .ascii " " /* */ | |
| .ascii " " /* */ | |
| .ascii " " /* */ | |
| .ascii " " /* */ | |
| .ascii "U " /* region support */ | |
| .section .text | |
| start: | |
| nop | |
| jmp start |
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