mirror of https://github.com/ariejan/i6502.git
39 lines
619 B
Go
39 lines
619 B
Go
package i6502
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import (
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"fmt"
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"io/ioutil"
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)
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/*
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Read-Only Memory
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*/
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type Rom struct {
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data []byte
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}
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/*
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Create a new Rom component, using the content of `path`. The file automatically
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specifies the size of Rom.
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*/
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func NewRom(path string) (*Rom, error) {
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data, err := ioutil.ReadFile(path)
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if err != nil {
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return nil, err
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}
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return &Rom{data: data}, nil
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}
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func (r *Rom) Size() uint16 {
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return uint16(len(r.data))
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}
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func (r *Rom) ReadByte(address uint16) byte {
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return r.data[address]
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}
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func (r *Rom) WriteByte(address uint16, data byte) {
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panic(fmt.Errorf("Trying to write to ROM at 0x%04X", address))
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}
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