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cim2bin.go
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/
cim2bin.go
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package main
import (
"bufio"
"flag"
"io"
"log"
"os"
)
var cim string
var bin string
var off0 uint
func writeU16(w io.Writer, u16 uint16) error {
var buf [2]byte
buf[0] = uint8(u16)
buf[1] = uint8(u16 >> 8)
_, err := w.Write(buf[:])
return err
}
func run() error {
flag.StringVar(&cim, "cim", "input.cim", `input CIM file name`)
flag.StringVar(&bin, "bin", "output.bin", `input BIN file name`)
flag.UintVar(&off0, "off", 0xa000, `offset to load`)
flag.Parse()
var off = uint16(off0)
// reaad CIM
b, err := os.ReadFile(cim)
if err != nil {
return err
}
// open file
f, err := os.Create(bin)
if err != nil {
return err
}
defer f.Close()
w := bufio.NewWriter(f)
// write header
err = w.WriteByte(0xFE)
if err != nil {
return err
}
err = writeU16(w, off)
if err != nil {
return err
}
err = writeU16(w, off+uint16(len(b))-1)
if err != nil {
return err
}
err = writeU16(w, off)
if err != nil {
return err
}
// write body
_, err = w.Write(b)
if err != nil {
return err
}
return w.Flush()
}
func main() {
err := run()
if err != nil {
log.Fatal(err)
}
}