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touch up the decoder
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@koron
koron committed Apr 19, 2024
1 parent 7af52f9 commit dd0668b
Showing 1 changed file with 50 additions and 51 deletions.
101 changes: 50 additions & 51 deletions operation.go
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Original file line number Diff line number Diff line change
Expand Up @@ -171,103 +171,103 @@ func (cpu *CPU) executeOne() {

// LD r1, r2
case 0x40:
//cpu.BC.Hi = cpu.BC.Hi
//cpu.BC.Hi = cpu.BC.Hi // LD B, B
case 0x41:
cpu.BC.Hi = cpu.BC.Lo
cpu.BC.Hi = cpu.BC.Lo // LD B, C
case 0x42:
cpu.BC.Hi = cpu.DE.Hi
cpu.BC.Hi = cpu.DE.Hi // LD B, D
case 0x43:
cpu.BC.Hi = cpu.DE.Lo
cpu.BC.Hi = cpu.DE.Lo // LD B, E
case 0x44:
cpu.BC.Hi = cpu.HL.Hi
cpu.BC.Hi = cpu.HL.Hi // LD B, H
case 0x45:
cpu.BC.Hi = cpu.HL.Lo
cpu.BC.Hi = cpu.HL.Lo // LD B, L
case 0x47:
cpu.BC.Hi = cpu.AF.Hi
cpu.BC.Hi = cpu.AF.Hi // LD B, A
case 0x48:
cpu.BC.Lo = cpu.BC.Hi
cpu.BC.Lo = cpu.BC.Hi // LD C, B
case 0x49:
//cpu.BC.Lo = cpu.BC.Lo
//cpu.BC.Lo = cpu.BC.Lo // LD C, B
case 0x4a:
cpu.BC.Lo = cpu.DE.Hi
cpu.BC.Lo = cpu.DE.Hi // LD C, D
case 0x4b:
cpu.BC.Lo = cpu.DE.Lo
cpu.BC.Lo = cpu.DE.Lo // LD C, E
case 0x4c:
cpu.BC.Lo = cpu.HL.Hi
cpu.BC.Lo = cpu.HL.Hi // LD C, H
case 0x4d:
cpu.BC.Lo = cpu.HL.Lo
cpu.BC.Lo = cpu.HL.Lo // LD C, L
case 0x4f:
cpu.BC.Lo = cpu.AF.Hi
cpu.BC.Lo = cpu.AF.Hi // LD C, A
case 0x50:
cpu.DE.Hi = cpu.BC.Hi
cpu.DE.Hi = cpu.BC.Hi // LD D, B
case 0x51:
cpu.DE.Hi = cpu.BC.Lo
cpu.DE.Hi = cpu.BC.Lo // LD D, C
case 0x52:
//cpu.DE.Hi = cpu.DE.Hi
//cpu.DE.Hi = cpu.DE.Hi // LD D, D
case 0x53:
cpu.DE.Hi = cpu.DE.Lo
cpu.DE.Hi = cpu.DE.Lo // LD D, E
case 0x54:
cpu.DE.Hi = cpu.HL.Hi
cpu.DE.Hi = cpu.HL.Hi // LD D, H
case 0x55:
cpu.DE.Hi = cpu.HL.Lo
cpu.DE.Hi = cpu.HL.Lo // LD D, L
case 0x57:
cpu.DE.Hi = cpu.AF.Hi
cpu.DE.Hi = cpu.AF.Hi // LD D, A
case 0x58:
cpu.DE.Lo = cpu.BC.Hi
cpu.DE.Lo = cpu.BC.Hi // LD E, B
case 0x59:
cpu.DE.Lo = cpu.BC.Lo
cpu.DE.Lo = cpu.BC.Lo // LD E, C
case 0x5a:
cpu.DE.Lo = cpu.DE.Hi
cpu.DE.Lo = cpu.DE.Hi // LD E, D
case 0x5b:
//cpu.DE.Lo = cpu.DE.Lo
//cpu.DE.Lo = cpu.DE.Lo // LD E, E
case 0x5c:
cpu.DE.Lo = cpu.HL.Hi
cpu.DE.Lo = cpu.HL.Hi // LD E, H
case 0x5d:
cpu.DE.Lo = cpu.HL.Lo
cpu.DE.Lo = cpu.HL.Lo // LD E, L
case 0x5f:
cpu.DE.Lo = cpu.AF.Hi
cpu.DE.Lo = cpu.AF.Hi // LD E, A
case 0x60:
cpu.HL.Hi = cpu.BC.Hi
cpu.HL.Hi = cpu.BC.Hi // LD H, B
case 0x61:
cpu.HL.Hi = cpu.BC.Lo
cpu.HL.Hi = cpu.BC.Lo // LD H, C
case 0x62:
cpu.HL.Hi = cpu.DE.Hi
cpu.HL.Hi = cpu.DE.Hi // LD H, D
case 0x63:
cpu.HL.Hi = cpu.DE.Lo
cpu.HL.Hi = cpu.DE.Lo // LD H, E
case 0x64:
//cpu.HL.Hi = cpu.HL.Hi
//cpu.HL.Hi = cpu.HL.Hi // LD H, H
case 0x65:
cpu.HL.Hi = cpu.HL.Lo
cpu.HL.Hi = cpu.HL.Lo // LD H, L
case 0x67:
cpu.HL.Hi = cpu.AF.Hi
cpu.HL.Hi = cpu.AF.Hi // LD H, A
case 0x68:
cpu.HL.Lo = cpu.BC.Hi
cpu.HL.Lo = cpu.BC.Hi // LD L, B
case 0x69:
cpu.HL.Lo = cpu.BC.Lo
cpu.HL.Lo = cpu.BC.Lo // LD L, C
case 0x6a:
cpu.HL.Lo = cpu.DE.Hi
cpu.HL.Lo = cpu.DE.Hi // LD L, D
case 0x6b:
cpu.HL.Lo = cpu.DE.Lo
cpu.HL.Lo = cpu.DE.Lo // LD L, E
case 0x6c:
cpu.HL.Lo = cpu.HL.Hi
cpu.HL.Lo = cpu.HL.Hi // LD L, H
case 0x6d:
//cpu.HL.Lo = cpu.HL.Lo
//cpu.HL.Lo = cpu.HL.Lo // LD L, L
case 0x6f:
cpu.HL.Lo = cpu.AF.Hi
cpu.HL.Lo = cpu.AF.Hi // LD L, A
case 0x78:
cpu.AF.Hi = cpu.BC.Hi
cpu.AF.Hi = cpu.BC.Hi // LD A, B
case 0x79:
cpu.AF.Hi = cpu.BC.Lo
cpu.AF.Hi = cpu.BC.Lo // LD A, C
case 0x7a:
cpu.AF.Hi = cpu.DE.Hi
cpu.AF.Hi = cpu.DE.Hi // LD A, D
case 0x7b:
cpu.AF.Hi = cpu.DE.Lo
cpu.AF.Hi = cpu.DE.Lo // LD A, E
case 0x7c:
cpu.AF.Hi = cpu.HL.Hi
cpu.AF.Hi = cpu.HL.Hi // LD A, H
case 0x7d:
cpu.AF.Hi = cpu.HL.Lo
cpu.AF.Hi = cpu.HL.Lo // LD A, L
case 0x7f:
//cpu.AF.Hi = cpu.AF.Hi
//cpu.AF.Hi = cpu.AF.Hi // LD A, A

case 0x46:
xopLDbHLP(cpu)
Expand Down Expand Up @@ -2147,8 +2147,7 @@ func (cpu *CPU) executeOne() {
oopLDSPIY(cpu)

case 0xcb:
d, c3 := cpu.fetch2()
switch c3 {
switch d, c3 := cpu.fetch2(); c3 {

case 0x06:
oopRLCIYdP(cpu, d)
Expand Down

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