mirror of https://github.com/irmen/ksim65.git
42 lines
1.2 KiB
Kotlin
42 lines
1.2 KiB
Kotlin
package net.razorvine.ksim65.components
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import net.razorvine.ksim65.Petscii
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typealias UByte = Short
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typealias Address = Int
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abstract class BusComponent {
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lateinit var bus: Bus
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abstract fun clock()
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abstract fun reset()
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}
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abstract class MemMappedComponent(val startAddress: Address, val endAddress: Address): BusComponent() {
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abstract operator fun get(address: Address): UByte
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abstract operator fun set(address: Address, data: UByte)
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init {
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require(endAddress>=startAddress)
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require(startAddress>=0 && endAddress <= 0xffff) { "can only have 16-bit address space" }
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}
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fun hexDump(from: Address, to: Address) {
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(from .. to).chunked(16).forEach {
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print("\$${it.first().toString(16).padStart(4, '0')} ")
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val bytes = it.map { address -> get(address) }
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bytes.forEach { byte ->
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print(byte.toString(16).padStart(2, '0') + " ")
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}
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print(" ")
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print(Petscii.decodeScreencode(bytes, false).replace('\ufffe', '.'))
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println()
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}
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}
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}
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abstract class MemoryComponent(startAddress: Address, endAddress: Address): MemMappedComponent(startAddress, endAddress) {
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abstract fun cloneContents(): Array<UByte>
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}
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