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additional instructions are only ^0111 and not ^1111

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folkert van heusden 2023-03-20 09:59:22 +01:00
parent 2bf8b92217
commit e6d89c425e
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 10 additions and 11 deletions
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21
cpu.cpp
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@ -410,7 +410,7 @@ bool cpu::double_operand_instructions(const uint16_t instr)
if (operation == 0b000)
return single_operand_instructions(instr);
if (operation == 0b111)
if (operation == 0b111 && word_mode == false)
return additional_double_operand_instructions(instr);
const uint8_t src = (instr >> 6) & 63;
@ -752,19 +752,18 @@ bool cpu::single_operand_instructions(const uint16_t instr)
case 0b00000011: { // SWAB
if (word_mode) // handled elsewhere
return false;
else {
auto g_dst = getGAM(dst_mode, dst_reg, word_mode, false);
uint16_t v = g_dst.value.value();
auto g_dst = getGAM(dst_mode, dst_reg, word_mode, false);
v = ((v & 0xff) << 8) | (v >> 8);
uint16_t v = g_dst.value.value();
set_flags = putGAM(g_dst, v);
v = ((v & 0xff) << 8) | (v >> 8);
if (set_flags) {
setPSW_flags_nzv(v, true);
setPSW_c(false);
}
set_flags = putGAM(g_dst, v);
if (set_flags) {
setPSW_flags_nzv(v, true);
setPSW_c(false);
}
break;
@ -1837,7 +1836,7 @@ std::map<std::string, std::vector<std::string> > cpu::disassemble(const uint16_t
if (text.empty() == false && next_word != -1)
instruction_words.push_back(next_word);
}
else if (do_opcode == 0b111) {
else if (do_opcode == 0b111 && word_mode == false) {
std::string src_text = format("R%d", (instruction >> 6) & 7);
auto dst_text { addressing_to_string(dst_register, (addr + 2) & 65535, word_mode) };