264 lines
7.5 KiB
C#
264 lines
7.5 KiB
C#
/*
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* Copyright 2007, 2011, 2015 Alex Makeev
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*
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* This file is part of ZXMAK2 (ZX Spectrum virtual machine).
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*
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* ZXMAK2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* ZXMAK2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with ZXMAK2. If not, see <http://www.gnu.org/licenses/>.
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*
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* Description: Z80 CPU Emulator [FXCB prefixed opcodes part]
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* Date: 25.09.2011
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*
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*/
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namespace ZXMAK2.Engine.Cpu.Processor
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{
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public partial class Z80Cpu
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{
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private void FXCB_RLC(byte cmd, ushort adr) // *RLC r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RLC(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RRC(byte cmd, ushort adr) // *RRC r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RRC(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RL(byte cmd, ushort adr) // *RL r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RL(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RR(byte cmd, ushort adr) // *RR r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RR(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SLA(byte cmd, ushort adr) // *SLA r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SLA(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SRA(byte cmd, ushort adr) // *SRA r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SRA(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SLL(byte cmd, ushort adr) // **SLL r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SLL(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SRL(byte cmd, ushort adr) // *SRL r
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SRL(val);
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RES(byte cmd, ushort adr) // *RES b,r,(IX+drel)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var m = (byte)~(1 << ((cmd & 0x38) >> 3));
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val &= m;
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SET(byte cmd, ushort adr) // *SET b,r,(IX+drel)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var m = (byte)(1 << ((cmd & 0x38) >> 3));
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var r = cmd & 7;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val |= m;
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_regSetters[r](val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RLCIX(byte cmd, ushort adr) // RLC (IX+) [23T]
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RLC(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RRCIX(byte cmd, ushort adr) // RRC (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RRC(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RLIX(byte cmd, ushort adr) // RL (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RL(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_RRIX(byte cmd, ushort adr) // RR (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_RR(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SLAIX(byte cmd, ushort adr) // SLA (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SLA(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SRAIX(byte cmd, ushort adr) // SRA (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SRA(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SLLIX(byte cmd, ushort adr) // *SLL (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SLL(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SRLIX(byte cmd, ushort adr) // SRL (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val = ALU_SRL(val);
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_BITIX(byte cmd, ushort adr) // BIT (IX+)
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{
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// 20T (4, 4, 3, 5, 4)
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var b = (cmd & 0x38) >> 3;
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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ALU_BITMEM(val, b);
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}
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private void FXCB_RESIX(byte cmd, ushort adr) // RES (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var m = (byte)~(1 << ((cmd & 0x38) >> 3));
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val &= m;
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WRMEM(adr, val); Tact += 3;
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}
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private void FXCB_SETIX(byte cmd, ushort adr) // SET (IX+)
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{
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// 23T (4, 4, 3, 5, 4, 3)
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var m = (byte)(1 << ((cmd & 0x38) >> 3));
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var val = RDMEM(adr); Tact += 3;
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RDNOMREQ(adr); Tact++;
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val |= m;
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WRMEM(adr, val); Tact += 3;
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}
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}
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}
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