54 lines
935 B
Go
54 lines
935 B
Go
package main
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import (
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"bufio"
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"fmt"
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"os"
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)
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type memory [65536]uint8
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func (m *memory) getWord(address uint16) uint16 {
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return uint16(m[address]) + 0x100*uint16(m[address+1])
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}
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func (m *memory) getZeroPageWord(address uint8) uint16 {
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return uint16(m[address]) + 0x100*uint16(m[address+1])
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// TODO: Does address + 1 wraps around the zero page?
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}
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func (m *memory) loadBinary(filename string) {
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f, err := os.Open(filename)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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stats, statsErr := f.Stat()
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if statsErr != nil {
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panic(err)
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}
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size := stats.Size()
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bytes := make([]byte, size)
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buf := bufio.NewReader(f)
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buf.Read(bytes)
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for i, v := range bytes {
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m[i] = uint8(v)
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}
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}
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func (m *memory) printPage(page uint8) {
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address := uint16(page) * 0x100
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for i := 0; i < 16; i++ {
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fmt.Printf("%#04x: ", address)
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for j := 0; j < 16; j++ {
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fmt.Printf("%02x ", m[address])
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address++
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}
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fmt.Printf("\n")
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}
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}
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