fox32: Dump RAM if bad opcode
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@ -268,6 +268,8 @@ impl Cpu {
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println!("{:#010X}: bad opcode {:#06X}", self.instruction_pointer, opcode);
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println!("size instr . cond dest src");
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println!("{:02b} {:06b} {:01b} {:03b} {:02b} {:02b}", size, instruction, empty, condition, destination, source);
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println!("dumping RAM");
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self.bus.memory.dump();
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panic!("bad opcode");
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}
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}
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@ -5,6 +5,7 @@ use crate::error;
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use std::cell::UnsafeCell;
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use std::sync::Arc;
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use std::io::Write;
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use std::fs::File;
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pub const MEMORY_RAM_SIZE: usize = 0x04000000; // 64 MiB
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pub const MEMORY_ROM_SIZE: usize = 0x00080000; // 512 KiB
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@ -54,6 +55,11 @@ impl Memory {
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pub fn ram(&self) -> &mut MemoryRam { &mut self.inner().ram }
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pub fn rom(&self) -> &mut MemoryRom { &mut self.inner().rom }
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pub fn dump(&self) {
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let mut file = File::create("memory.dump").expect("failed to open memory dump file");
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file.write_all(self.ram()).expect("failed to write memory dump file");
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}
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pub fn read_8(&self, address: u32) -> u8 {
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let address = address as usize;
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