Minor changes; populate version in A-registger too, create files if missing, and ensure we align our syscall dump

Author: skx

cpm/cpm_bdos.go

@@ -319,6 +319,7 @@ func BdosSysCallBDOSVersion(cpm *CPM) error {
 
 	// HL = 0x0022 -CP/M 2.2
 	cpm.CPU.States.HL.SetU16(0x0022)
+	cpm.CPU.States.AF.Hi = 0x22
 	return nil
 }
 
@@ -484,7 +485,7 @@ func BdosSysCallFileOpen(cpm *CPM) error {
 	}
 
 	// Now we open from the filesystem
-	file, err := os.OpenFile(fileName, os.O_RDWR, 0644)
+	file, err := os.OpenFile(fileName, os.O_CREATE|os.O_RDWR, 0644)
 	if err != nil {
 		cpm.log = cpm.log.With(slog.Group("error", slog.String("message", err.Error())))
 		setResult(cpm, 0xFF)

main.go

@@ -164,7 +164,9 @@ func main() {
 				if ent.Fake {
 					fake = "FAKE"
 				}
-				fmt.Printf("\t%03d %-20s %s\r\n", int(id), ent.Desc, fake)
+				if ent.Desc != "" {
+					fmt.Printf("\t%03d %-25s %s\r\n", int(id), ent.Desc, fake)
+				}
 			}
 		}