Immediate addressing sized based on register used

2023-12-05 03:46:08 -05:00
parent 6931ed4500
commit c2dba25b91
1 changed files with 3 additions and 2 deletions
--- a/src/app/emu/cpu/addressing.cc
+++ b/src/app/emu/cpu/addressing.cc
@@ -98,8 +98,9 @@ uint32_t CPU::DirectPageIndirectLongIndexedY() {
  return effective_address;
 }

-uint16_t CPU::Immediate() {
-  if (GetAccumulatorSize()) {
+uint16_t CPU::Immediate(bool index_size) {
+  bool bit_mode = index_size ? GetIndexSize() : GetAccumulatorSize();
+  if (bit_mode) {
    return memory.ReadByte((PB << 16) | PC + 1);
  } else {
    return memory.ReadWord((PB << 16) | PC + 1);