47 lines
780 B
Go
47 lines
780 B
Go
package apple2
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type rxmPage struct {
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data [256]uint8
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observer func(address uint8, isWrite bool)
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}
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type ramPage struct {
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rxmPage
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}
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type romPage struct {
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rxmPage
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}
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func (p *rxmPage) Peek(address uint8) uint8 {
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p.touch(address, false)
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return p.data[address]
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}
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func (p *rxmPage) internalPeek(address uint8) uint8 {
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return p.data[address]
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}
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func (p *rxmPage) all() []uint8 {
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return p.data[:]
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}
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func (p *rxmPage) Poke(address uint8, value uint8) {
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p.touch(address, true)
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p.data[address] = value
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}
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func (p *rxmPage) touch(address uint8, isWrite bool) {
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if p.observer != nil {
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p.observer(address, isWrite)
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}
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}
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func (p *romPage) Poke(address uint8, value uint8) {
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// Do nothing
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}
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func (p *romPage) burn(address uint8, value uint8) {
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p.data[address] = value
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}
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