BIN D modifiers D cha r Punch Bits Unit Meaning blank none C------ 1401 Unconditional -- no word mark needed in the next char 1 1 ------1 1009 in run condition A24-3071-2 I-66 1011 punch in backspace operation 1011 reader parity indicator on 1231 auto select 1285 error 1412 control-check indicator on 1418 late read 1419 document to be read 1428 late read or late reading mode change 1445 printer error 7040 set 1401 error latch (PC-086) after 1401 process check 7340 hypertape unusual end 7740 transmission complete with abnormal status DDC transmission error A24-3071-2 I-14 2 2 -----2- 1009 buffer available A24-3071-2 I-66 1011 punch ready 1011 reader ready 1231 full buffer 1285 end of line 1412 reader-not-ready signal on 1418 ready to engage 1419 document under read head (PDS 4) 1428 ready to engage 7040 waiting for 1401 instruction (RDSA PRDA WRSA PWRA CTLA SNSA REWA RUNA RSRA WEFA or WBTA instruction) 7340 hypertape normal end 7740 transmission complete successfully DDC transmission ended by GMWM A24-3071-2 I-14 3 3 C----21 1009 good transmission occurred A24-3071-2 I-66 1011 punch not ready to receive data 1231 ready to read 1285 reader transporting 1412 read-check indicator on 1418 document under selected read station 1419 valid amount field 1428 document under selected read station 7340 hypertape control unit 7641 busy 7740 receive request DDC read request A24-3071-2 I-14 4 4 ----4-- 1009 reply-bad indicator on A24-3071-2 I-66 1011 punch not ready to read 1231 empty hopper 1285 marked line 1412 amount-field indicator on 1419 valid process-control field 7340 hypertape attention 7740 7740 attention DDC write request A24-3071-2 I-14 5 5 C---4-1 1009 error reply acknowledgement A24-3071-2 I-66 1011 punch overextended 1231 read error or overrun 1285 header information 1412 process-control indicator on 1418 document end 1419 valid account-number field 1428 document end 1445 printer busy 7040 sense indicator (SLNA instruction) 6 6 C---42- 1009 program attention required A24-3071-2 I-66 1011 punch supply reel low or chad box full 1231 timing mark check 1285 ready to read a line 1412 account-number indicator on 1418 character on line 1419 valid transit-number field 1428 character on line 1445 carriage busy DDC write in progress A24-3071-2 I-14 7 7 ----421 1009 end of message A24-3071-2 I-66 1285 reader ready 1412 transit-number indicator on 1418 empty hopper and transport (end of file) 1419 valid serial-number field 1428 empty hopper and transport (end of file) 1445 carriage channel 9 DDC read in progress A24-3071-2 I-14 8 8 ---8--- 1009 end of file A24-3071-2 I-66 1285 end of file 1412 document-spacing-check indicator on 1418 ready to read 1419 auto-select 1428 ready to read 1448 carriage channel 12 DDC system A stopped A24-3071-2 I-14 9 BC9 9 C--8--1 1403 carriage tape channel 9 0 0 C--8-2- 1404 validity error = 3-8 ---8-21 ' BCV 4-8 C--84-- 1403 carriage tape channel 12 : 5-8 ---84-1 > 6-8 ---842- 1448 end of block { 7-8 C--8421 ^ none --A---- / BU 0-1 C-A---1 1401 unequal compare S BE 0-2 C-A--2- 1401 equal compare T BL 0-3 --A--21 1401 low compare U BH 0-4 C-A-4-- 1401 high compare V 0-5 --A-4-1 1301 disk error 1311 disk error 1405 read or write parity check or read back check error W 0-6 --A-42- 1301 wrong-length record 1311 wrong-length record 1405 wrong-length record X 0-7 C-A-421 1301 uniqual-address compare 1311 uniqual-address compare 1405 unequal-address compare Y 0-8 C-A8--- 1301 any disk-unit error condition 1311 any disk-unit error condition 1405 any disk-unit error condition Z BAV 0-9 --A8--1 1401 arithmetic overflow | 0-2-8 --A8-2- 1403 printer error (record mark) , 0-3-8 C-A8-21 ( 0-4-8 --A84-- 1401 process check with process check switch off (%) 1440 I/O check stop switch off (maybe 1440 only) ~ 0-5-8 C-A84-1 \ 0-6-8 C-A842- 1301 access busy 1311 access busy " 0-7-8 --A8421 - 11 -B----- J 11-1 CB----1 1419 I/O channel-busy indicator TAU tape busy SIO serial input-output busy K BEF 11-2 CB---2- TAU end of reel (writing) or tape mark (reading) L BER 11-3 -B---21 TAU tape error M 11-4 CB--4-- N 11-5 -B--4-1 1301 access inoperable 1311 access inoperable 1405 access inoperable O 11-6 -B--42- P 11-7 CB--421 1403 printer busy Q 11-8 CB-8--- 1407 or 1447 inquiry request R BPCB 11-9 -B-8--1 1403 carriage busy ! 11-0 -B-8-2- 1402 punch error $ 11-3-8 CB-8-21 * 11-4-8 -B-84-- 1407 or 1447 inquiry clear ] 11-5-8 CB-84-1 ; 11-6-8 CB-842- _ 11-7-8 -B-8421 + 12 CBA---- 1442 last card (Reader unit 2) A BLC 12-1 -BA---1 1402 last card if SS A is on B BSS 12-2 -BA---2 1401 SS B 7340 hypertape attention response C BSS 12-3 CBA--21 1401 SS C D BSS 12-4 -BA-4-- 1401 SS D E BSS 12-5 CBA-4-1 1401 SS E 7340 hypertape end response F BSS 12-6 CBA-42- 1401 SS F G BSS 12-7 -BA-421 1401 SS G H 12-8 -BA8--- 1402 reader busy I 12-9 CBA8--1 1402 punch busy ? 12-0 CBA8-2- 1402 reader error . 12-3-8 -BA8-21 ) 12-4-8 CBA84-- [ 12-5-8 -BA84-1 < 12-6-8 -BA842- 1448 early warning } 12-7-8 CBA8421 # Pierce's alternate BCD encoding: # # Numeric b 1 2 3 4 5 6 7 8 9 0 3 4 5 6 7 # Rows b 8 8 8 8 8 # =========================================== # No zone 1 2 3 4 5 6 7 8 9 0 = ' : > { 000-017 = 00-0F # 0 zone A ^ / S T U V W X Y Z | , ( ~ \ " 020-037 = 10-1F # 11 zone B - J K L M N O P Q R ! $ * ] ; _ 040-057 = 20-2F # 12 zone BA + A B C D E F G H I ? . ) [ < } 060-077 = 30-3F # # | is 0-2-8, and ^ has no input punch (it may punch as zero # on output). On other systems it may be 2-8.