INDEX BY SUBJECT 771 instructions 559 - 561 timeout value 747 interrupts 512, 513, vector tables 58368 - 560, 561, 58447 54286, ZIOCB number 33 54287 Direct Memory Access location 560, 561, (DMA) 54274 graphics control 53277 lowest address 14, 15 ROM 54272 reserving memory 106 shadow 559 ROM tables 65093 Disk (see also DOS) screen mode 87 beep during I/O 65 scrolling 54276, boot 9 - 13, 74, 54277 75 size 88, 89 boot address 578, 579 vertical line count 54283 boot continuation 4, 5 DOS (see also Disk) boot routine 62159, boot address 578, 579 62189 boot record 1792 buffer 21, 22, 1802 buffers 6780 - 7547, flags 576, 577 5121 - 5440, FMS page zero 67 - 73 7588 - 7923 FMS pointer 24, 25 burst I/O 2952 - 2773 handler commands 778 drives in system 1802 handler routines 60906 - DUP.SYS RAM 5440 - 13062 61047 filename change 3818, 3822 handler vector 58448, files reserved 1801 58451 FMS RAM 1792 - 5377 initialization address 12, 13, 738, initialization 12, 13, 738, 739 739 records open 1801 run address 736 - 737 retries 54 start vector 9 - 11 run address 736 - 739 wildcard character 3783 start vector 10, 11 DRAW command timeout 582 color of line 763 utilities 26, 27 cursor 90 - 92 vector 10, 11 endpoint of line 84 - 86, 96 - verify routine 1913 98 Display handler (see flag 695 also Characters, Screen) GR.0 87 logical line map 690 - 693 ROM routines 64764 memory 14, 15 screen mode 87 pixel mask 672 DUP.SYS RAM 656 - 703 load 10,11 registers 76, 80, 81, Errors 99 - 105, 107 BASIC 186, 187, - 127 195 routines 62454 device 746 Text window 656 - 667 disk I/O 73 vector 58384 SIO 575 Display List ESC (Escape) key address 560, 561 control codes without 766 54274, flag 674 54275 FILL command (see also enable 559 DRAW) entries 81