10 SA=32777:SYSSA+6
20 PRINT"INSERT DISK,PRESS A KEY"
30 GETA$:IFA$=""THEN30
40 SYSSA,"COLOUR 6 15 6"
50 SYSSA,"PROMPT >"
60 SYSSA,"DRIVE 0"
70 SYSSA,"DEVICE 0 8 1 9 2 10 3 11"
80 SYSSA,"ERRON"
90 SYSSA,"TEXTON"
100 SYSSA,"READON"
110 SYSSA,"REPLACEON"
120 SYSSA,"INIT"
130 SYSSA,"SAVE IDOS L 8000 A000"
140 GOTO20