Atari 400 Technical Reference Manual page 354

ERR LINE ADDR B1 B2 B3 B4 DISPLAY HANDLER -- 10-30-78 -- DISPLC
PAGE 93
4083
4084 *=KBDORG
4085
4086 F3E4 A9 FF PWRONA: LDA 4tSFF
4087 F3E6 8D FC 02 STA CH
4088 F3E9
AD E6 02 LDA
MEMTOP+l
4089 F3EC
29 FO AND
#SFO ; INSURE 4K PAGE BOUNDARY
4090 F3EE 85 6A STA RAMTOP
4091 F3FO A9 40 LDA #.40 iDEFAULT.TO UPPER CASE ALPHA AT PWRON
4092 F3F2 8D BE 02 STA SHFLOK
4093 F3F5 60 RTS iPOWER ON COMPLETED