33 lines
774 B
Go
33 lines
774 B
Go
package core6502
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// MemoryPage is a data page of 256 bytes
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type MemoryPage interface {
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Peek(uint8) uint8
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Poke(uint8, uint8)
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}
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// PagedMemory represents the addressable space of the processor
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type PagedMemory struct {
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data [256]MemoryPage
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}
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// Peek returns the data on the given address
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func (m *PagedMemory) Peek(address uint16) uint8 {
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hi := uint8(address >> 8)
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lo := uint8(address)
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return m.data[hi].Peek(lo)
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}
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// Poke sets the data at the given address
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func (m *PagedMemory) Poke(address uint16, value uint8) {
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hi := uint8(address >> 8)
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lo := uint8(address)
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//fmt.Println(hi)
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m.data[hi].Poke(lo, value)
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}
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// SetPage assigns a MemoryPage implementation on the page given
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func (m *PagedMemory) SetPage(index uint8, page MemoryPage) {
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m.data[index] = page
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}
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