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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();
TMP2 = read(TMP);
do_add(TMP2);
if(P & F_D) {
read_pc_noinc();
set_nz(A);
}
prefetch();
add_zpx
TMP = read_pc();
read(TMP);
TMP2 = read(uint8_t(TMP+X));
do_add(TMP2);
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;
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