diff options
Diffstat (limited to 'z80.cpu')
| -rw-r--r-- | z80.cpu | 200 |
1 files changed, 199 insertions, 1 deletions
@@ -513,6 +513,26 @@ fd 11100001 pop_iy add a main.R a update_flags SZYHVXN0C +dd 10000100 add_ixh + lsr ix 8 scratch1 + add a scratch1 a + update_flags SZYHVXN0C + +dd 10000101 add_ixl + and ix 0xFF scratch1 + add a scratch1 a + update_flags SZYHVXN0C + +fd 10000100 add_iyh + lsr iy 8 scratch1 + add a scratch1 a + update_flags SZYHVXN0C + +fd 10000101 add_iyl + and iy 0xFF scratch1 + add a scratch1 a + update_flags SZYHVXN0C + 10000110 add_hl z80_fetch_hl add a scratch1 a @@ -563,21 +583,90 @@ z80_add16_hl local hlw 16 meta hlt hlw z80_add16_hl hlw - 00111001 add_hl_sp local hlw 16 meta hlt hlw z80_add16_hl sp +dd 00001001 add_ix_bc + lsl b 8 scratch1 + or c scratch1 scratch1 + add scratch1 ix ix + update_flags YHXN0C + +dd 00011001 add_ix_de + lsl d 8 scratch1 + or e scratch1 scratch1 + add scratch1 ix ix + update_flags YHXN0C + +dd 00101001 add_ix_ix + add ix ix ix + update_flags YHXN0C + +dd 00111001 add_ix_sp + add sp ix ix + update_flags YHXN0C + +fd 00001001 add_iy_bc + lsl b 8 scratch1 + or c scratch1 scratch1 + add scratch1 iy iy + update_flags YHXN0C + +fd 00011001 add_iy_de + lsl d 8 scratch1 + or e scratch1 scratch1 + add scratch1 iy iy + update_flags YHXN0C + +fd 00101001 add_iy_iy + add iy iy iy + update_flags YHXN0C + +fd 00111001 add_iy_sp + add sp iy iy + update_flags YHXN0C + 10001RRR adc_reg adc a main.R a update_flags SZYHVXN0C + +dd 10001100 adc_ixh + lsr ix 8 scratch1 + adc a scratch1 a + update_flags SZYHVXN0C + +dd 10001101 adc_ixl + and ix 0xFF scratch1 + adc a scratch1 a + update_flags SZYHVXN0C + +fd 10001100 adc_iyh + lsr iy 8 scratch1 + adc a scratch1 a + update_flags SZYHVXN0C + +fd 10001101 adc_iyl + and iy 0xFF scratch1 + adc a scratch1 a + update_flags SZYHVXN0C 10001110 adc_hl z80_fetch_hl adc a scratch1 a update_flags SZYHVXN0C + +dd 10001110 adc_ixd + z80_fetch_index ix + adc a scratch1 a + update_flags SZYHVXN0C + +fd 10001110 adc_iyd + z80_fetch_index iy + adc a scratch1 a + update_flags SZYHVXN0C 11001110 adc_immed z80_fetch_immed @@ -625,10 +714,40 @@ ed 01111010 adc_hl_sp sub main.R a a update_flags SZYHVXN1C +dd 10010100 sub_ixh + lsr ix 8 scratch1 + sub scratch1 a a + update_flags SZYHVXN1C + +dd 10010101 sub_ixl + and ix 0xFF scratch1 + sub scratch1 a a + update_flags SZYHVXN1C + +fd 10010100 sub_iyh + lsr iy 8 scratch1 + sub scratch1 a a + update_flags SZYHVXN1C + +fd 10010101 sub_iyl + and iy 0xFF scratch1 + sub scratch1 a a + update_flags SZYHVXN1C + 10010110 sub_hl z80_fetch_hl sub scratch1 a a update_flags SZYHVXN1C + +dd 10010110 sub_ixd + z80_fetch_index ix + sub scratch1 a a + update_flags SZYHVXN1C + +fd 10010110 sub_iyd + z80_fetch_index iy + sub scratch1 a a + update_flags SZYHVXN1C 11010110 sub_immed z80_fetch_immed @@ -639,10 +758,41 @@ ed 01111010 adc_hl_sp sbc main.R a a update_flags SZYHVXN1C +dd 10011100 sbc_ixh + lsr ix 8 scratch1 + sbc scratch1 a a + update_flags SZYHVXN1C + +dd 10011101 sbc_ixl + and ix 0xFF scratch1 + sbc scratch1 a a + update_flags SZYHVXN1C + +fd 10011100 sbc_iyh + lsr iy 8 scratch1 + sbc scratch1 a a + update_flags SZYHVXN1C + +fd 10011101 sbc_iyl + and iy 0xFF scratch1 + sbc scratch1 a a + update_flags SZYHVXN1C + + 10011110 sbc_hl z80_fetch_hl sbc scratch1 a a update_flags SZYHVXN1C + +dd 10011110 sbc_ixd + z80_fetch_index ix + sbc scratch1 a a + update_flags SZYHVXN1C + +fd 10011110 sbc_iyd + z80_fetch_index iy + sbc scratch1 a a + update_flags SZYHVXN1C 11011110 sbc_immed z80_fetch_immed @@ -746,6 +896,30 @@ ed 01110010 sbc_hl_sp add 1 main.R main.R update_flags SZYHVXN0 +dd 00100100 inc_ixh + add 0x100 ix ix + update_flags SZYHVXN0 + +dd 00101100 inc_ixl + local tmp 8 + mov ix tmp + add 1 tmp tmp + update_flags SZYHVXN0 + and 0xFF00 ix ix + or tmp ix ix + +fd 00100100 inc_iyh + add 0x100 iy iy + update_flags SZYHVXN0 + +fd 00101100 inc_iyl + local tmp 8 + mov iy tmp + add 1 tmp tmp + update_flags SZYHVXN0 + and 0xFF00 iy iy + or tmp iy iy + 00110100 inc_hl local tmp 8 z80_fetch_hl @@ -813,6 +987,30 @@ fd 00100011 inc_iy sub 1 main.R main.R update_flags SZYHVXN1 +dd 00100101 dec_ixh + sub 0x100 ix ix + update_flags SZYHVXN1 + +dd 00101101 dec_ixl + local tmp 8 + mov ix tmp + sub 1 tmp tmp + update_flags SZYHVXN1 + and 0xFF00 ix ix + or tmp ix ix + +fd 00100101 dec_iyh + sub 0x100 iy iy + update_flags SZYHVXN1 + +fd 00101101 dec_iyl + local tmp 8 + mov iy tmp + sub 1 tmp tmp + update_flags SZYHVXN1 + and 0xFF00 iy iy + or tmp iy iy + 00110101 dec_hl z80_fetch_hl #TODO: fix size |