Seth J. Morabito
ac88786df7
- Device read and write may now throw MemoryAccessException, and appropriate throws clauses have been added throughout the code.
54 lines
1.4 KiB
Java
54 lines
1.4 KiB
Java
package com.loomcom.symon;
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import com.loomcom.symon.devices.Memory;
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import com.loomcom.symon.exceptions.MemoryAccessException;
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import junit.framework.TestCase;
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public class CpuIndirectModeTest extends TestCase {
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protected Cpu cpu;
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protected Bus bus;
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protected Memory mem;
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protected void setUp() throws Exception {
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this.cpu = new Cpu();
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this.bus = new Bus(0x0000, 0xffff);
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this.mem = new Memory(0x0000, 0x10000);
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bus.addCpu(cpu);
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bus.addDevice(mem);
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// Load the reset vector.
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bus.write(0xfffc, Cpu.DEFAULT_BASE_ADDRESS & 0x00ff);
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bus.write(0xfffd, (Cpu.DEFAULT_BASE_ADDRESS & 0xff00)>>>8);
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cpu.reset();
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// Assert initial state
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assertEquals(0, cpu.getAccumulator());
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assertEquals(0, cpu.getXRegister());
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assertEquals(0, cpu.getYRegister());
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assertEquals(0x200, cpu.getProgramCounter());
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assertEquals(0xff, cpu.getStackPointer());
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assertEquals(0x20, cpu.getProcessorStatus());
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}
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/*
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* The following opcodes are tested for correctness in this file:
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*
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* JMP - $6c
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*
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*/
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/* JMP - Jump - $6c */
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public void test_JMP() throws MemoryAccessException {
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bus.write(0x3400, 0x00);
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bus.write(0x3401, 0x54);
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bus.loadProgram(0x6c, 0x00, 0x34);
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cpu.step();
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assertEquals(0x5400, cpu.getProgramCounter());
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// No change to status flags.
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assertEquals(0x20, cpu.getProcessorStatus());
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}
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} |