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# license:BSD-3-Clause
# copyright-holders:Olivier Galibert, AJR
adc_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	do_adc(read(TMP+X));
	if(P & F_D) {
		read_pc_noinc();
		set_nz(A);
	}
	prefetch();

add_imm
	TMP = read_pc();
	do_add(TMP);
	if(P & F_D) {
		read_pc_noinc();
		set_nz(A);
	}
	prefetch();

add_zpg
	TMP = read_pc();
	TMP = read(TMP);
	do_add(TMP);
	if(P & F_D) {
		read_pc_noinc();
		set_nz(A);
	}
	prefetch();

add_zpx
	TMP = read_pc();
	read(TMP);
	TMP = read(uint8_t(TMP+X));
	do_add(TMP);
	if(P & F_D) {
		read_pc_noinc();
		set_nz(A);
	}
	prefetch();

and_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	A &= read(TMP+X);
	set_nz(A);
	prefetch();

asr_acc
	read_pc_noinc();
	A = do_asr(A);
	prefetch();

bar_amr
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	TMP2 = read(TMP);
	TMP = read_pc_noinc();
	read_pc();
	TMP2 = ~TMP2 & TMP;
	TMP = read_pc();
	if(TMP2 != 0) {
		read_pc_noinc();
		if(page_changing(PC, int8_t(TMP))) {
			read_arg(set_l(PC, PC+int8_t(TMP)));
		}
		PC += int8_t(TMP);
	}
	prefetch();

bas_amr
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	TMP2 = read(TMP);
	TMP = read_pc_noinc();
	read_pc();
	TMP2 &= TMP;
	TMP = read_pc();
	if(TMP2 != 0) {
		read_pc_noinc();
		if(page_changing(PC, int8_t(TMP))) {
			read_arg(set_l(PC, PC+int8_t(TMP)));
		}
		PC += int8_t(TMP);
	}
	prefetch();

brk_r_imp
	if(irq_taken || nmi_pending) {
		read_pc_noinc();
	} else {
		read_pc();
	}
	write(SP, PC >> 8);
	dec_SP();
	write(SP, PC);
	dec_SP();
	write(SP, irq_taken || nmi_pending ? P & ~F_B : P);
	dec_SP();
	if(irq_taken && nmi_pending) {
		PC = read_arg(0xfffc);
		PC = set_h(PC, read_arg(0xfffd));
		nmi_pending = false;
		standard_irq_callback(NMI_LINE);
	} else {
		TMP = get_irq_vector();
		PC = read_arg(TMP);
		PC = set_h(PC, read_arg(TMP+1));
		if(irq_taken)
			standard_irq_callback(((~TMP & 0x000e) >> 1) - 1);
	}
	irq_taken = false;
	P = (P | F_I) & ~F_D; // Do *not* move after the prefetch
	prefetch();
	inst_state = -1;

clw_imp
	read_pc_noinc();
	P &= ~F_V;
	m_w = 0;
	prefetch();

cmp_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	do_cmp(A, read(TMP+X));
	prefetch();

eor_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	A ^= read(TMP+X);
	set_nz(A);
	prefetch();

exc_zpx
	TMP = read_pc();
	read(TMP);
	TMP = uint8_t(TMP+X);
	TMP2 = read(TMP);
	write(TMP, A);
	A = TMP2;
	prefetch();

ini_imp
	read_pc_noinc();
	read(m_i);
	m_i++;
	prefetch();

jpi_ind
	m_i = PC;
	TMP = read_arg(m_i);
	TMP = set_h(TMP, read_arg(m_i+1));
	m_i += 2;
	PC = read(TMP);
	PC = set_h(PC, read(TMP+1));
	prefetch();

jsb_vec
	read_pc_noinc();
	write(SP, PC>>8);
	dec_SP();
	write(SP, PC);
	dec_SP();
	TMP = 0xffe0 | ((inst_state >> 3) & 0x0e);
	PC = read_arg(TMP);
	PC = set_h(PC, read_arg(TMP+1));
	prefetch();

jmp_r_ind
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	PC = read(TMP);
	PC = set_h(PC, read(TMP+1));
	prefetch();

jsr_r_adr
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	write(SP, PC>>8);
	dec_SP();
	write(SP, PC);
	dec_SP();
	PC = TMP;
	prefetch();

lab_acc
	read_pc_noinc();
	read_pc_noinc();
	if(int8_t(A) < 0)
		A = -A;
	set_nz(A);
	prefetch();

lai_imp
	read_pc_noinc();
	A = read(m_i);
	prefetch();

lan_imp
	read_pc_noinc();
	A = read(m_i);
	m_i++;
	prefetch();

lda_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	A = read(TMP+X);
	set_nz(A);
	prefetch();

lii_imp
	read_pc_noinc();
	TMP = read(m_i);
	TMP = set_h(TMP, read(m_i+1));
	read(TMP);
	m_i = TMP;
	prefetch();

mpa_imp
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	TMP = int8_t(A) * int8_t(Y);
	m_w = do_accumulate(TMP, m_w);
	prefetch();

mpy_imp
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	read_pc_noinc();
	TMP = int8_t(A) * int8_t(Y);
	A = do_accumulate(TMP, 0)>>8;
	prefetch();

neg_acc
	read_pc_noinc();
	A = -A;
	set_nz(A);
	prefetch();

nxt_imp
	read_pc_noinc();
	PC = read(m_i);
	PC = set_h(PC, read(m_i+1));
	m_i += 2;
	prefetch();

ora_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	A |= read(TMP+X);
	set_nz(A);
	prefetch();

phi_imp
	read_pc_noinc();
	write(SP, m_i>>8);
	dec_SP();
	write(SP, m_i);
	dec_SP();
	prefetch();

phw_imp
	read_pc_noinc();
	write(SP, m_w>>8);
	dec_SP();
	write(SP, m_w);
	dec_SP();
	prefetch();

pia_imp
	read_pc_noinc();
	read(SP);
	inc_SP();
	m_i = read(SP);
	inc_SP();
	m_i = set_h(m_i, read(SP));
	A = read(m_i);
	m_i++;
	prefetch();

pli_imp
	read_pc_noinc();
	read(SP);
	inc_SP();
	m_i = read(SP);
	inc_SP();
	m_i = set_h(m_i, read(SP));
	read(m_i);
	prefetch();

plw_imp
	read_pc_noinc();
	read(SP);
	inc_SP();
	m_w = read(SP);
	inc_SP();
	m_w = set_h(m_w, read(SP));
	prefetch();

psh_imp
	read_pc_noinc();
	write(SP, A);
	dec_SP();
	write(SP, X);
	dec_SP();
	write(SP, Y);
	dec_SP();
	prefetch();

pul_imp
	read_pc_noinc();
	read(SP);
	inc_SP();
	Y = read(SP);
	inc_SP();
	X = read(SP);
	inc_SP();
	A = read(SP);
	prefetch();

rba_ima
	A = read_pc(); // "Note that Accumulator contents are altered by RBA and SBA" (C29/C39 Technical Reference Manual, p. C-29)
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	TMP2 = read(TMP);
	read(TMP);
	TMP2 &= ~A;
	write(TMP, TMP2);
	prefetch();

rnd_imp
	read_pc_noinc();
	TMP = set_l(m_w, Y);
	A = do_accumulate(TMP, (m_w<<1) & 0x100)>>8;
	prefetch();

rts_r_imp
	read_pc_noinc();
	read_pc_noinc();
	inc_SP();
	PC = read(SP);
	inc_SP();
	PC = set_h(PC, read(SP));
	prefetch();

sba_ima
	A = read_pc();
	TMP = read_pc();
	TMP = set_h(TMP, read_pc());
	TMP2 = read(TMP);
	read(TMP);
	TMP2 |= A;
	write(TMP, TMP2);
	prefetch();

sbc_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	if(page_changing(TMP, X)) {
		read(set_l(TMP, TMP+X));
	}
	do_sbc(read(TMP+X));
	if(P & F_D) {
		read_pc_noinc();
		set_nz(A);
	}
	prefetch();

sta_ipx
	TMP2 = read_pc();
	TMP = read(TMP2);
	TMP = set_h(TMP, read((TMP2+1) & 0xff));
	read(set_l(TMP, TMP+X));
	write(TMP+X, A);
	prefetch();

sti_imz
	TMP = read_pc();
	TMP2 = read_pc();
	write(TMP2, TMP);
	prefetch();

taw_imp
	read_pc_noinc();
	m_w = A<<8;
	set_nz(m_w>>8);
	prefetch();

tip_imp
	read_pc_noinc();
	PC = m_i;
	prefetch();

twa_imp
	read_pc_noinc();
	A = m_w>>8;
	set_nz(A);
	prefetch();

#   exceptions
reset_r
	read_pc();
	read_pc_noinc();
	read(SP); dec_SP();
	read(SP); dec_SP();
	read(SP); dec_SP();
	P = (P | F_I) & ~F_D;
	PC = read_arg(0xfffe);
	PC = set_h(PC, read_arg(0xffff));
	prefetch();
	inst_state = -1;