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|
# license:BSD-3-Clause
# copyright-holders:David Haywood
# xavix2000 opcodes (Super XaviX)
phy_imp
read_pc();
write_stack(SP, Y);
dec_SP();
prefetch();
phx_imp
read_pc();
write_stack(SP, X);
dec_SP();
prefetch();
plx_imp
read_pc();
read_stack(SP);
inc_SP();
X = read_stack(SP);
set_nz(X);
prefetch();
ply_imp
read_pc();
read_stack(SP);
inc_SP();
Y = read_stack(SP);
set_nz(Y);
prefetch();
clr_acc
read_pc();
A = 0;
set_nz(A);
prefetch();
dec_acc
read_pc();
A--;
set_nz(A);
prefetch();
not_acc
read_pc();
A = A ^ 0xff;
set_nz(A);
prefetch();
inc_acc
read_pc();
A++;
set_nz(A);
prefetch();
neg_acc
read_pc();
A = (0x00 - A) & 0xff;
set_nz(A);
prefetch();
oraj_imp
read_pc();
A |= m_j;
set_nz(A);
prefetch();
orak_imp
read_pc();
A |= m_k;
set_nz(A);
prefetch();
oral_imp
read_pc();
A |= m_l;
set_nz(A);
prefetch();
oram_imp
read_pc();
A |= m_m;
set_nz(A);
prefetch();
andj_imp
read_pc();
A &= m_j;
set_nz(A);
prefetch();
andk_imp
read_pc();
A &= m_k;
set_nz(A);
prefetch();
andl_imp
read_pc();
A &= m_l;
set_nz(A);
prefetch();
andm_imp
read_pc();
A &= m_m;
set_nz(A);
prefetch();
eorj_imp
read_pc();
A ^= m_j;
set_nz(A);
prefetch();
eork_imp
read_pc();
A ^= m_k;
set_nz(A);
prefetch();
eorl_imp
read_pc();
A ^= m_l;
set_nz(A);
prefetch();
eorm_imp
read_pc();
A ^= m_m;
set_nz(A);
prefetch();
adcj_imp
read_pc();
do_adc(m_j);
prefetch();
adck_imp
read_pc();
do_adc(m_k);
prefetch();
adcl_imp
read_pc();
do_adc(m_l);
prefetch();
adcm_imp
read_pc();
do_adc(m_m);
prefetch();
staj_imp
read_pc();
m_j = A;
prefetch();
stak_imp
read_pc();
m_k = A;
prefetch();
stal_imp
read_pc();
m_l = A;
prefetch();
stam_imp
read_pc();
m_m = A;
prefetch();
ldaj_imp
read_pc();
A = m_j;
set_nz(A);
prefetch();
ldak_imp
read_pc();
A = m_k;
set_nz(A);
prefetch();
ldal_imp
read_pc();
A = m_l;
set_nz(A);
prefetch();
ldam_imp
read_pc();
A = m_m;
set_nz(A);
prefetch();
cmpj_imp
read_pc();
do_cmp(A, m_j);
prefetch();
cmpk_imp
read_pc();
do_cmp(A, m_k);
prefetch();
cmpl_imp
read_pc();
do_cmp(A, m_l);
prefetch();
cmpm_imp
read_pc();
do_cmp(A, m_m);
prefetch();
sbcj_imp
read_pc();
do_sbc(m_j);
prefetch();
sbck_imp
read_pc();
do_sbc(m_k);
prefetch();
sbcl_imp
read_pc();
do_sbc(m_l);
prefetch();
sbcm_imp
read_pc();
do_sbc(m_m);
prefetch();
spa0_imp
read_pc();
m_pa = (m_pa & 0xffff00) | A;
prefetch();
lpa0_imp
read_pc();
A = (m_pa & 0x0000ff) >> 0;
set_nz(A);
prefetch();
spa1_imp
read_pc();
m_pa = (m_pa & 0xff00ff) | (A << 8);
prefetch();
lpa1_imp
read_pc();
A = (m_pa & 0x00ff00) >> 8;
set_nz(A);
prefetch();
spa2_imp
read_pc();
m_pa = (m_pa & 0x00ffff) | (A << 16);
prefetch();
lpa2_imp
read_pc();
A = (m_pa & 0xff0000) >> 16;
set_nz(A);
prefetch();
spb0_imp
read_pc();
m_pb = (m_pb & 0xffff00) | A;
prefetch();
lpb0_imp
read_pc();
A = (m_pb & 0x0000ff) >> 0;
set_nz(A);
prefetch();
spb1_imp
read_pc();
m_pb = (m_pb & 0xff00ff) | (A << 8);
prefetch();
lpb1_imp
read_pc();
A = (m_pb & 0x00ff00) >> 8;
set_nz(A);
prefetch();
spb2_imp
read_pc();
m_pb = (m_pb & 0x00ffff) | (A << 16);
prefetch();
lpb2_imp
read_pc();
A = (m_pb & 0xff0000) >> 16;
set_nz(A);
prefetch();
incpa_imp
read_pc();
m_pa = (m_pa & ~0xff) | ((m_pa+1) & 0xff);
set_nz(m_pa&0xff); // startup code seems to require flag to set if low byte is 0x00?
prefetch();
incpb_imp
read_pc();
m_pb = (m_pb & ~0xff) | ((m_pb+1) & 0xff);
set_nz(m_pb&0xff); // startup code seems to require flag to set if low byte is 0x00?
prefetch();
decpa_imp
read_pc();
m_pa = (m_pa & ~0xff) | ((m_pa-1) & 0xff);
set_nz(m_pa&0xff); // startup code seems to require flag to set if low byte is 0x00?
prefetch();
decpb_imp
read_pc();
m_pb = (m_pb & ~0xff) | ((m_pb-1) & 0xff);
set_nz(m_pb&0xff); // startup code seems to require flag to set if low byte is 0x00?
prefetch();
orapa_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
andpa_imp
read_pc();
TMP = read_full_data(m_pa);
A &= TMP;
set_nz(A);
prefetch();
eorpa_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
adcpa_imp
do_adc(read_full_data(m_pa));
prefetch();
stapa_imp
write_full_data(m_pa, A);
prefetch();
ldapa_imp
A = read_full_data(m_pa);
set_nz(A);
prefetch();
cmppa_imp
TMP = read_full_data(m_pa);
do_cmp(A, TMP);
prefetch();
sbcpa_imp
do_sbc(read_full_data(m_pa));
prefetch();
orapb_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
andpb_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
eorpb_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
adcpb_imp
do_adc(read_full_data(m_pb));
prefetch();
stapb_imp
write_full_data(m_pb, A);
prefetch();
ldapb_imp
A = read_full_data(m_pb);
set_nz(A);
prefetch();
cmppb_imp
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
sbcpb_imp
do_sbc(read_full_data(m_pb));
prefetch();
stx_aby
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
write(TMP+Y, X);
prefetch();
sty_abx
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
write(TMP+X, Y);
prefetch();
stz_xav_zpg
TMP = read_pc();
PC++;
write_zeropage(TMP, 0x00);
prefetch();
stz_aba
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
write(TMP, 0x00);
prefetch();
bit_xav_zpx
fatalerror("unhandled opcode %02x%04x: %02x\n", m_codebank, PPC, inst_state);
read_pc();
prefetch();
bit_abx
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
TMP += X;
TMP2 = read(TMP);
do_bit(TMP2);
prefetch();
bit_imm
TMP = read_pc();
PC++;
do_bit(TMP);
prefetch();
asr_xav_zpg
TMP = read_pc(); // TODO: verify this, should it write back or set A?
PC++;
TMP2 = read_zeropage(TMP);
do_asr(TMP2);
write_zeropage(TMP,TMP2);
prefetch();
asr_aba
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
TMP2 = read(TMP);
write(TMP, TMP2);
TMP2 = do_asr(TMP2); // used by xavbox, see 14e8
write(TMP, TMP2);
prefetch();
asr_xav_zpx
TMP = read_pc();
read_pc();
PC++;
TMP = uint8_t(TMP+X);
TMP2 = read_zeropage(TMP);
read_zeropage((TMP+1) & 0xff);
TMP2 = do_asr(TMP2);
write_zeropage(TMP, TMP2);
prefetch();
asr_acc
A = do_asr(A);
prefetch();
asr_abx
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
read(set_l(TMP, TMP+X));
TMP += X;
TMP2 = read(TMP);
read(TMP);
TMP2 = do_asr(TMP2);
write(TMP, TMP2);
prefetch();
cmc_imp
read_pc();
TMP = P & F_C;
P &= ~F_C;
TMP = ~TMP;
P |= TMP & F_C;
prefetch();
sev_imp
read_pc();
P |= F_V;
prefetch();
jmpf_ind
TMP = read_pc();
PC++;
TMP = set_h(TMP, read_pc());
PC++;
PC = read(TMP);
PC = set_h(PC, read(set_l(TMP, TMP+1)));
TMP2 = read(TMP+2);
set_codebank(TMP2);
prefetch();
|