diff options
| -rw-r--r-- | z80.cpu | 134 |
1 files changed, 134 insertions, 0 deletions
@@ -175,6 +175,74 @@ z80_fetch_immed_to_reg16 01DDDSSS ld_from_reg mov main.S main.D +dd 01DDD100 ld_from_ixh + invalid D 6 + lsr ix 8 main.D + +dd 01100SSS ld_to_ixh + invalid S 6 + local tmp 16 + and 0xFF ix ix + lsl main.S 8 tmp + or tmp ix ix + +dd 0110D10S ld_ixb_to_ixb + +dd 01DDD101 ld_from_ixl + invalid D 6 + mov ix main.D + +dd 01101SSS ld_to_ixl + invalid S 6 + and 0xFF00 ix ix + or main.S ix ix + +dd 01100101 ld_ixl_to_ixh + local tmp 16 + lsl ix 8 tmp + and 0xFF ix ix + or tmp ix ix + +dd 01101100 ld_ixh_to_ixl + local tmp 16 + lsr ix 8 tmp + and 0xFF00 ix ix + or tmp ix ix + +fd 01DDD100 ld_from_iyh + invalid D 6 + lsr iy 8 main.D + +fd 01100SSS ld_to_iyh + invalid S 6 + local tmp 16 + and 0xFF iy iy + lsl main.S 8 tmp + or tmp iy iy + +fd 0110D10S ld_iyb_to_iyb + +fd 01DDD101 ld_from_iyl + invalid D 6 + mov iy main.D + +fd 01101SSS ld_to_iyl + invalid S 6 + and 0xFF00 iy iy + or main.S iy iy + +fd 01100101 ld_iyl_to_iyh + local tmp 16 + lsl iy 8 tmp + and 0xFF iy iy + or tmp iy iy + +fd 01101100 ld_iyh_to_iyl + local tmp 16 + lsr iy 8 tmp + and 0xFF00 iy iy + or tmp iy iy + z80_calc_index arg index 16 mov index wz @@ -204,6 +272,28 @@ fd 01RRR110 ld_from_iy 00RRR110 ld_immed z80_fetch_immed mov scratch1 main.R + +dd 00100110 ld_immed_ixh + z80_fetch_immed + lsl scratch1 8 scratch1 + and 0xFF ix ix + or scratch1 ix ix + +dd 00101110 ld_immed_ixl + z80_fetch_immed + and 0xFF00 ix ix + or scratch1 ix ix + +fd 00100110 ld_immed_iyh + z80_fetch_immed + lsl scratch1 8 scratch1 + and 0xFF iy iy + or scratch1 iy iy + +fd 00101110 ld_immed_iyl + z80_fetch_immed + and 0xFF00 iy iy + or scratch1 iy iy 01110RRR ld_to_hl mov main.R scratch1 @@ -224,6 +314,20 @@ fd 01110RRR ld_to_iy 00110110 ld_to_hl_immed z80_fetch_immed z80_store_hl + +dd 00110110 ld_to_ixd_immed + z80_calc_index ix + z80_fetch_immed + cycles 2 + mov wz scratch2 + ocall write_8 + +fd 00110110 ld_to_iyd_immed + z80_calc_index iy + z80_fetch_immed + cycles 2 + mov wz scratch2 + ocall write_8 00001010 ld_a_from_bc lsl b 8 wz @@ -380,6 +484,28 @@ fd 00101010 ld_iy_from_immed ocall write_8 add 1 wz wz +dd 00100010 ld_ix_to_immed + z80_fetch_immed16 + mov wz scratch2 + mov ix scratch1 + ocall write_8 + add 1 wz wz + mov wz scratch2 + lsr ix 8 scratch1 + ocall write_8 + add 1 wz wz + +fd 00100010 ld_iy_to_immed + z80_fetch_immed16 + mov wz scratch2 + mov iy scratch1 + ocall write_8 + add 1 wz wz + mov wz scratch2 + lsr iy 8 scratch1 + ocall write_8 + add 1 wz wz + z80_regpair_to_immed z80_fetch_immed16 mov wz scratch2 @@ -417,6 +543,14 @@ ed 01110011 ld_sp_to_immed cycles 2 lsl h 8 sp or l sp sp + +dd 11111001 ld_sp_ix + cycles 2 + mov ix sp + +fd 11111001 ld_sp_iy + cycles 2 + mov iy sp z80_push cycles 1 |