Some opcodes are already working.
As of today 21.03.2023:
BRK = 0x00,
***LDA
LDA_IM = 0xA9,
LDA_ZP = 0xA5,
LDA_ZPX = 0xB5,
***LDX
LDX_IM = 0xA2,
LDX_ZP = 0xA6,
LDX_ZPY = 0xB6,
***LDY
LDY_IM = 0xA0,
LDY_ZP = 0xA4,
LDY_ZPX = 0xB4,
***JMP
JMP_ABS = 0x4C,
***Stack
PHA = 0x48,
PLA = 0x68