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SXT was not implemented

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folkert van heusden 2022-03-16 21:05:15 +01:00
parent 5002040e30
commit 976f37c0bc
1 changed files with 18 additions and 2 deletions
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20
cpu.cpp
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@ -854,8 +854,24 @@ bool cpu::single_operand_instructions(const uint16_t instr)
psw = getGAM(dst_mode, dst_reg, word_mode, false, src_gam_text);
break;
case 0b000110111: // MFPS (get PSW to something)
putGAM(dst_mode, dst_reg, word_mode, psw, false, dst_gam_text);
case 0b000110111: // MFPS (get PSW to something) / SXT
if (word_mode) { // MFPS
putGAM(dst_mode, dst_reg, word_mode, psw, false, dst_gam_text);
}
else { // SXT
a = getGAMAddress(dst_mode, dst_reg, word_mode, false);
v = b -> read(a, word_mode);
vl = getPSW_n() ? -1 : 0;
setPSW_z(getPSW_n() == false);
setPSW_v(false);
if (dst_mode == 0)
putGAM(dst_mode, dst_reg, word_mode, vl, false, dst_gam_text);
else
b -> write(a, word_mode, vl);
}
break;
default: