Better OSCLI parsing, *DRIVE, OSFILE01,2,3,4,6 ad 7

acornMemory.go

@@ -3,7 +3,7 @@ package main
 import (
 	_ "embed"
 	"fmt"
-	"io/ioutil"
+	"os"
 )
 
 type acornMemory struct {
@@ -104,7 +104,7 @@ func (m *acornMemory) loadFirmware() {
 }
 
 func (m *acornMemory) loadRom(filename string, slot uint8) {
-	data, err := ioutil.ReadFile(filename)
+	data, err := os.ReadFile(filename)
 	if err != nil {
 		panic(err)
 	}

files.go

@@ -32,17 +32,17 @@ func (env *environment) openFile(filename string, mode uint8) uint8 {
 	switch mode {
 	case 0x40: // Open file for input only
 		//env.file[i], err = os.Open(filename)
-		env.file[i], err = os.OpenFile(filename, os.O_RDONLY|os.O_CREATE, 0644)
+		env.file[i], err = os.OpenFile(filename, os.O_RDONLY /*|os.O_CREATE*/, 0644)
 	case 0x80: // Open file for output only
 		env.file[i], err = os.Create(filename)
-	case 0xc0: // Open file foe update
+	case 0xc0: // Open file for update
 		env.file[i], err = os.OpenFile(filename, os.O_RDWR|os.O_CREATE, 0644)
 	default:
 		env.raiseError(errorTodo, fmt.Sprintf("Unknown open mode for OSFIND 0x%02x", mode))
 		i = -1
 	}
 	if err != nil {
-		env.raiseError(errorTodo, err.Error())
+		//env.raiseError(errorTodo, err.Error())
 		i = -1
 	}