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Took a shot at LDIR.

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This commit is contained in:
Thomas Harte 2017-05-20 21:58:24 -04:00
parent 01a064dd63
commit 6688f83226
1 changed files with 27 additions and 1 deletions
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28
Processors/Z80/Z80.hpp
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@ -107,6 +107,8 @@ struct MicroOp {
Add16,
ExDEHL,
LDIR,
SetInstructionPage,
None
@ -200,7 +202,12 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
NOP_ROW(), /* 0x80 */
NOP_ROW(), /* 0x90 */
NOP_ROW(), /* 0xa0 */
NOP_ROW(), /* 0xb0 */
/* 0xb0 LDIR */ Program(FETCHL(temporary_.bytes.low, hl_), STOREL(temporary_.bytes.low, de_), WAIT(2), {MicroOp::LDIR}, WAIT(5)), /* 0xb1 CPIR */ XX,
/* 0xb2 INIR */ XX, /* 0xb3 OTIR */ XX,
XX, XX, XX, XX,
/* 0xb8 LDDR */ XX, /* 0xb9 CPDR */ XX,
/* 0xba INDR */ XX, /* 0xbb OTDR */ XX,
XX, XX, XX, XX,
NOP_ROW(), /* 0xc0 */
NOP_ROW(), /* 0xd0 */
NOP_ROW(), /* 0xe0 */
@ -491,6 +498,25 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
hl_.full = temp;
} break;
case MicroOp::LDIR: {
bc_.full--;
de_.full++;
hl_.full++;
bit3_result_ = bit5_result_ = a_ + temporary_.bytes.low;
subtract_flag_ = 0;
half_carry_flag_ = 0;
if(bc_.full) {
parity_overflow_flag_ = Flag::Parity;
pc_.full -= 2;
} else {
parity_overflow_flag_ = 0;
move_to_next_program();
checkSchedule();
}
} break;
case MicroOp::SetInstructionPage:
schedule_program(fetch_decode_execute);
current_instruction_page_ = (CPU::Z80::MicroOp **)operation->source;