471 lines
6.9 KiB
C#
471 lines
6.9 KiB
C#
using System;
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using BizHawk.Common.NumberExtensions;
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namespace BizHawk.Emulation.Common.Components.I8048
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{
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public partial class I8048
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{
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// this contains the vectors of instrcution operations
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// NOTE: This list is NOT confirmed accurate for each individual cycle
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public void ILLEGAL()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 4;
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}
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public void OP_IMP(ushort oper)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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oper);
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IRQS = 4;
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}
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public void OP_R_IMP(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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oper, (ushort)(reg + RB));
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IRQS = 4;
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}
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public void OP_A_R(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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oper, A, (ushort)(reg + RB));
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IRQS = 4;
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}
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public void OP_IR(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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oper, (ushort)(reg + RB), A);
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IRQS = 4;
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}
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public void OP_A_IR(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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MEM_ALU, (ushort)(reg + RB),
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oper, A, ALU);
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IRQS = 4;
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}
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public void OP_DIR_IR(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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oper, (ushort)(reg + RB), ALU);
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IRQS = 9;
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}
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public void IN_OUT_A(ushort oper, ushort port)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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oper, A, port);
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IRQS = 4;
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}
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public void MOV_R(ushort dest, ushort src)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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MOV, dest, src);
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IRQS = 4;
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}
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public void IN_OUT_BUS(ushort oper)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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oper, A);
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IRQS = 9;
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}
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public void OUT_P(ushort port)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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port, A);
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IRQS = 9;
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}
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public void RET()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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PULL_PC,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void RETR()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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PULL,
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EM,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void MOV_A_P4(ushort port)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void MOV_P4_A(ushort port)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void MOV_A_A()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void MOV3_A_A()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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IRQS = 9;
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}
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public void MOVX_A_R(ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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EEA,
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WR_P, 0, (ushort)(reg + RB),
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DEA,
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IDLE,
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IDLE,
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IDLE,
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RD_P, A, 0);
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IRQS = 9;
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}
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public void MOVX_R_A(ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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EEA,
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WR_P, 0, (ushort)(reg + RB),
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DEA,
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IDLE,
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IDLE,
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IDLE,
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WR_P, 0, A);
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IRQS = 9;
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}
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public void OP_A_DIR(ushort oper)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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oper, A, ALU);
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IRQS = 9;
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}
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public void OP_R_DIR(ushort oper, ushort reg)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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oper, (ushort)(reg + RB), ALU);
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IRQS = 9;
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}
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// TODO: This should only write back to the port destination if directly wired, otherwise we should wait for a write pulse
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// TODO: for O2, P1 is tied direct to CTRL outputs so this is ok, BUS and P2 should do something else though
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public void OP_PB_DIR(ushort oper, ushort reg)
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{
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if (reg == 1)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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oper, (ushort)(reg + PX), ALU,
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IDLE,
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IDLE,
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WR_P, reg, (ushort)(reg + PX));
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}
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else
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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oper, (ushort)(reg + PX), ALU,
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IDLE,
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IDLE,
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IDLE);
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}
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IRQS = 9;
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}
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public void OP_EXP_A(ushort oper, ushort reg)
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{
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// Lower 4 bits only
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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TR, ALU, A,
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IDLE,
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IDLE,
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MSK, ALU,
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IDLE,
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oper, reg, ALU);
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IRQS = 9;
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}
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public void CALL(ushort dest_h)
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{
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// Lower 4 bits only
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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PUSH,
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IDLE,
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SET_ADDR, PC, ALU, dest_h);
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IRQS = 9;
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}
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public void DJNZ(ushort reg)
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{
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if ((Regs[reg + RB] - 1) == 0)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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DEC8, (ushort)(reg + RB),
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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}
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else
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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DEC8, (ushort)(reg + RB),
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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SET_ADDR_8, PC, ALU);
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}
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IRQS = 9;
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}
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public void JP_A()
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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MEM_ALU, A,
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IDLE,
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IDLE,
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IDLE,
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IDLE,
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SET_ADDR_8, PC, ALU);
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IRQS = 9;
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}
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public void JPB(ushort Tebit)
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{
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if (Regs[A].Bit(Tebit))
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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SET_ADDR_8, PC, ALU);
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}
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else
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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IDLE);
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}
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IRQS = 9;
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}
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public void JP_COND(bool cond, ushort SPEC)
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{
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if (cond)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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SET_ADDR_8, PC, ALU);
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}
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else
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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SPEC,
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IDLE,
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IDLE,
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IDLE);
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}
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IRQS = 9;
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}
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public void JP_2k(ushort high_addr)
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{
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PopulateCURINSTR(IDLE,
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IDLE,
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IDLE,
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RD, ALU, PC,
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INC11, PC,
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IDLE,
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IDLE,
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IDLE,
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SET_ADDR, PC, ALU, high_addr);
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IRQS = 9;
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}
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}
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}
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