INDEX BY SUBJECT OPEN for input 58493 Coldstart read block entry 58490 cassette boot 9, 74 record size 1021 disk boot 9 run address 10, 11, 12, entry point 58487 13 flag 580 status register 648 powerup 61733 voice track 53775 Color Characters attract mode 77 - 79 ATASCII 763, 57344 default values 712 auto repeat 764 GTIA registers 53266 - bit mapping 57344 53274 blinking text 548, 549, player/missile shadows 704 - 707 755 playfield shadows 708 - 712 character sets 756, 57344 - rotate 77, 703 58367 screen mode 87 character set address 756, 54281 Command frame buffer colors 756 (CFB) 570 - 573 control codes 766 Console keys control key 702, 764 cassette boot 74 control register 755 cursor inhibit 752 Controller jacks 54016, hardware code 764 54017 internal code 762, 764 CTIA inverse 694 see GTIA invisible inverse 755 Cursor last character read, advance 85 written 763 character under 93, 125 logic processing 124 column 85, 86 mode 755, 54273 current position 84 - 86, 94, move set to RAM 756 95 printer output 31 end of line 125 prior character code 754 graphics 90 - 92 ROM routines 63038 - inhibit (disable) 752 63196, LOCATE 85, 86 63202 logical line 99 screen location 87 opaque, transparent 755, 54273 shadow 756 out of range error 87 shift key 702 previous position 90 - 92 tests 65470 row 84 translation of code 57344 tab width 201 under cursor 93 text window 85, 86, 123 upside down 512, 513, Device 755, 54273 buffer 772, 773 Checksum 49, 59, 60 byte transfer 776, 777 CIO command 770 command 23 Device Control Block IOCBs 832 - 959 (DCB) 768 - 779 utility initialization 58478 drivers (adding) 806 variables 43 error status 746 vector 58454 handler address table 794 - 831 handler routines 58534 - Clock attract mode 77 - 79 handler vectors 768 - 831 realtime 18, 19, 20 retries 55 serial clock lines 53775 status registers 746 - 749 sound use 53768