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op_jump.go
120 lines (101 loc) · 1.6 KB
/
op_jump.go
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package z80
func oopJPnn(cpu *CPU) {
cpu.PC = cpu.fetch16()
}
func oopJRe(cpu *CPU) {
off := cpu.fetch()
cpu.PC = addrOff(cpu.PC, off)
}
func oopJRCe(cpu *CPU) {
off := cpu.fetch()
if cpu.flagC() {
cpu.PC = addrOff(cpu.PC, off)
}
}
func oopJRNCe(cpu *CPU) {
off := cpu.fetch()
if !cpu.flagC() {
cpu.PC = addrOff(cpu.PC, off)
}
}
func oopJRZe(cpu *CPU) {
off := cpu.fetch()
if cpu.flagZ() {
cpu.PC = addrOff(cpu.PC, off)
}
}
func oopJRNZe(cpu *CPU) {
off := cpu.fetch()
if !cpu.flagZ() {
cpu.PC = addrOff(cpu.PC, off)
}
}
func oopJPHLP(cpu *CPU) {
p := cpu.HL.U16()
cpu.PC = p
}
func oopJPIXP(cpu *CPU) {
p := cpu.IX
cpu.PC = p
}
func oopJPIYP(cpu *CPU) {
p := cpu.IY
cpu.PC = p
}
func oopDJNZe(cpu *CPU) {
off := cpu.fetch()
cpu.BC.Hi--
if cpu.BC.Hi != 0 {
cpu.PC = addrOff(cpu.PC, off)
}
}
//////////////////////////////////////////////////////////////////////////////
// eXpanded OPration codes
func xopJPnZnn(cpu *CPU) {
nn := cpu.fetch16()
if !cpu.flagZ() {
cpu.PC = nn
}
}
func xopJPfZnn(cpu *CPU) {
nn := cpu.fetch16()
if cpu.flagZ() {
cpu.PC = nn
}
}
func xopJPnCnn(cpu *CPU) {
nn := cpu.fetch16()
if !cpu.flagC() {
cpu.PC = nn
}
}
func xopJPfCnn(cpu *CPU) {
nn := cpu.fetch16()
if cpu.flagC() {
cpu.PC = nn
}
}
func xopJPnPVnn(cpu *CPU) {
nn := cpu.fetch16()
if !cpu.flagPV() {
cpu.PC = nn
}
}
func xopJPfPVnn(cpu *CPU) {
nn := cpu.fetch16()
if cpu.flagPV() {
cpu.PC = nn
}
}
func xopJPnSnn(cpu *CPU) {
nn := cpu.fetch16()
if !cpu.flagS() {
cpu.PC = nn
}
}
func xopJPfSnn(cpu *CPU) {
nn := cpu.fetch16()
if cpu.flagS() {
cpu.PC = nn
}
}