diff options
Diffstat (limited to 'src/instruction.ts')
| -rw-r--r-- | src/instruction.ts | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/instruction.ts b/src/instruction.ts index dbb23e7..fe64f10 100644 --- a/src/instruction.ts +++ b/src/instruction.ts @@ -258,17 +258,28 @@ export function avrInstruction(cpu: ICPU) { /* LAC, 1001 001r rrrr 0110 */ if ((opcode & 0xfe0f) === 0x9206) { - /* not implemented */ + const r = (opcode & 0x1f0) >> 4; + const clear = cpu.data[r]; + const value = cpu.readData(cpu.dataView.getUint16(30, true)); + cpu.writeData(cpu.dataView.getUint16(30, true), value & (255 - clear)); + cpu.data[r] = value; } /* LAS, 1001 001r rrrr 0101 */ if ((opcode & 0xfe0f) === 0x9205) { - /* not implemented */ + const r = (opcode & 0x1f0) >> 4; + const set = cpu.data[r]; + const value = cpu.readData(cpu.dataView.getUint16(30, true)); + cpu.writeData(cpu.dataView.getUint16(30, true), value | set); + cpu.data[r] = value; } /* LAT, 1001 001r rrrr 0111 */ if ((opcode & 0xfe0f) === 0x9207) { - /* not implemented */ + const r = cpu.data[(opcode & 0x1f0) >> 4]; + const R = cpu.readData(cpu.dataView.getUint16(30, true)); + cpu.writeData(cpu.dataView.getUint16(30, true), r ^ R); + cpu.data[(opcode & 0x1f0) >> 4] = R; } /* LDI, 1110 KKKK dddd KKKK */ @@ -278,7 +289,10 @@ export function avrInstruction(cpu: ICPU) { /* LDS, 1001 000d dddd 0000 kkkk kkkk kkkk kkkk */ if ((opcode & 0xfe0f) === 0x9000) { - /* not implemented */ + const value = cpu.readData(cpu.progMem[cpu.pc + 1]); + cpu.data[(opcode & 0x1f0) >> 4] = value; + cpu.pc++; + cpu.cycles++; } /* LDX, 1001 000d dddd 1100 */ |