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Emulator: Add last 8-bit LD opcode variants

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Riyyi
2022-08-24 21:14:59 +02:00
parent c630a7aab6
commit efe798084f
1 changed files with 20 additions and 0 deletions
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src/cpu.cpp
+20
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@@ -154,9 +154,13 @@ void CPU::update()
case 0xc6: add(); break;
case 0xcd: call(); break;
case 0xe0: ldffi8(); break;
case 0xe2: ldr8(); break;
case 0xea: ldr8(); break;
case 0xf0: ldffi8(); break;
case 0xf2: lda8(); break;
case 0xf8: ldr16(); break;
case 0xf9: ldr16(); break;
case 0xfa: lda8(); break;
default:
print("opcode {:#x} not implemented\n", opcode);
@@ -262,6 +266,14 @@ void CPU::lda8()
m_h = address >> 8;
break;
}
case 0xf2: // LD A,(C)
m_wait_cycles += 8;
m_a = read(m_c);
break;
case 0xfa: // LD A,a16
m_wait_cycles += 16;
m_a = pcRead16();
break;
default:
VERIFY_NOT_REACHED();
}
@@ -430,6 +442,14 @@ void CPU::ldr8()
m_a = read(hl());
break;
case 0x7f: /* LD A,A m_a = m_a; */ break;
case 0xe2: // LD (C),A
m_wait_cycles += 4;
write(m_c, m_a);
break;
case 0xea: // LD a16,A
m_wait_cycles += 16;
write(pcRead16(), m_a);
break;
default:
VERIFY_NOT_REACHED();
}