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11/70 has no MFPS instruction

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folkert van heusden 2023-03-19 22:19:31 +01:00
parent 8b82095d49
commit 7e916a652e
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 4 additions and 2 deletions
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6
cpu.cpp
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@ -1308,10 +1308,10 @@ bool cpu::single_operand_instructions(const uint16_t instr)
break;
case 0b000110111: { // MFPS (get PSW to something) / SXT
auto g_dst = getGAM(dst_mode, dst_reg, word_mode, false);
if (word_mode) { // MFPS
#if 0 // not in the PDP-11/70
auto g_dst = getGAM(dst_mode, dst_reg, word_mode, false);
uint16_t temp = psw & 0xff;
bool extend_b7 = psw & 128;
@ -1330,6 +1330,8 @@ bool cpu::single_operand_instructions(const uint16_t instr)
#endif
}
else { // SXT
auto g_dst = getGAM(dst_mode, dst_reg, word_mode, false);
int32_t vl = -getPSW_n();
if (put_result(g_dst, vl)) {