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https://github.com/toyoshim/Applerm-II.git
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dd372c8a2d
All investigation for implementation and testing were done. Now, 6502.S can be verified on qemu-arm, and run even on LPC1114. All I have to do is just implement the 6502 interpreter.
33 lines
478 B
ArmAsm
33 lines
478 B
ArmAsm
.syntax unified
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.cpu cortex-m0
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.align 2
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.thumb
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.thumb_func
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.include "registers.inc"
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.extern cpu6502_reset
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.extern cpu6502_run
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.extern uart_init
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.extern uart_putc
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.section .rodata
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hello:
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.ascii "Applerm II\n\000"
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.text
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.global _reset
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.type _reset, %function
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_reset:
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ldr r0, =#(_stack_top - 32)
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mov sp, r0
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bl uart_init
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ldr r0, =#hello
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bl uart_putstr
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bl cpu6502_reset
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bl cpu6502_run
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1:
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b 1b
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.size _reset, .-_reset
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