Page 1: ...FDC 3 li CARD USER S GUIDE Et...
Page 2: ...FDC 3 FLOPPY DISK CONTROLLER USER MANUAL...
Page 3: ...Connections VI USER REPAIR GUIDE 1 1 1 1 2 1 3 1 3 1 3 1 3 1 3 3 3 5 3 7 3 9 4 1 4 1 5 1 5 1 6 1 A TEl A l A 2 A 3 INC T DOS DISKETTE READ WRITE ERROR INDICATIONS General Commands Error Recovery Proce...
Page 4: ...g c o g o Q...
Page 5: ...tion and The TEl Inc FDC 3 Floppy Disk Controller was specifically designed to operate reliably in a TEl Inc ComFuter System using TEl Inc system components Although the FDC 3 Floppy Disk Controller m...
Page 6: ...lower information appears after CRT warmup with drive doors open FDC 3 card will not work properly 5 Place System diskette l in drive A 2 close drive door wait for memory size prompt then enter size i...
Page 7: ...d i rectional Dal Write Data DI Buss Driver Write Gate Di rect ion Step Head Load Head Loadedl Delay 1 Address A2 A7 Write Fault Decoder A2 F I 0 I Write Protect MatrIx G Index Pulse AD Al 1 Ready I I...
Page 8: ...C 3 address decoder The three row by five column matrix between Z26 and the card edge enables the jumper selection described above and in Section 3 8 When the CPU sends date to the address Lelected by...
Page 9: ...ed by density ana drive signals The selected buffer passe the selected frequency 2 4 8 or 16 MHz to the Digital Phase Lc cked Loop 3 5 3 WRITE DA I A DELAY GENERATOR AND BUFFER Z5 delays the Write Dat...
Page 10: ...G i I d I i L MAW READ 51 11 r __EG I AcU W EO S T 4 1 1 I OPEC OR ReL IC i rl C_ _0uc_ll J Q r I _ _ _ __ we __ _ ro N1 u i 4 ftlFACf O F lO P WG r043 mo WP r 3a O IC REAO I TEAF CT CO TIlIO STEP DIl...
Page 11: ...its of serial data from the drive then outputs it as one byte to the Dcta Regis er or receives a byte from the Data Register and transmits it as serial data to the drive 3 6 3 SECTOR REGISTER This eig...
Page 12: ...ts register data flow accordingly The Drive Interface logic processEs status signals f om the disk drive and control signals from the Computer Interface logic to control data transfer to and from the...
Page 13: ...5 VDC 1 I I 1 I I 1 I Figure 3 3 FDC 3 Card Address Jumpering Wiring Side of Card Up TABLE 3 2 FDC 3 ADDRESS JUMPER SELECTION I I A7 I A6 I AS 1 A4 I 1 1 1 1 1 1 o 1 2 3 4 5 6 7 8 9 A B C D E F o c o...
Page 14: ...ogic 0 and A2 AO software selected from 0 7 which results in a final address of 80 to 87 To select a different address refer o Table 3 2 determine the address connection c refully cut the factory jump...
Page 15: ...f empty holes shown in detail as asterisks in Figure 3 4 approximately 3n 7 5 cm straight down from left edge of large signal connector cut the etched jumper then solder a jumper from the single hole...
Page 16: ...ette drives 4 2 1791 DEVICE The 1791 LSI device responds to 11 commands of four types Type I cowmands cause hea d anG or stepper motor action Type II commands read or write data fromlto a selected sec...
Page 17: ...stem designation Configuration occurs during System checkout Drive selection during program operation is software controlled 5 2 5 2 SIGNAL CABLE CONNECTIONS REGULJl R DRIVES Table 5 1 sho Vs signal c...
Page 18: ...ect I Ground I In Use I Ground I Head Load I Ground I Index I Ground I Ready 1 Ground I Spare I Ground 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Enable Drive Select 1...
Page 19: ...1 I Ground 5 IGround I 22 I write Data 6 ISpare 1 23 I Ground 7 IGround I 24 1 Write Gate 8 IInd x 1 25 I Ground 9 IGround I 26 1 Track 0 10 IDr i ve 1 Select I 27 1 Ground 11 IGround I 28 1 vir i te...
Page 20: ...from Computer then place card on a clean firnl surface and GENTLY burnish each contact on both sides of the S IOO bus edge connector with a pencil eraser Do not use a power eraser or an art gum erase...
Page 21: ...X2 SECTOR XlX2 COMMAND XlX2 where XlX2 is two hexadecimal base 16 digits T DOS forms hexadecimal digits from the Status or Command codes as follows I High Order Digit 1 Low O der Digit 1 1 1 1 I 1 I 1...
Page 22: ...rrors A 2 2 TYPE II AND TYPE III COMMANDS Type II commands cause reading or writing data fromlto the sector selected by a preceding Type I command Table A 2 shows the Type II command codes Type III co...
Page 23: ...ration For a Write operation it causes T DOS to give an error message with status code equal to one of 40 4F S4 at logic 1 causes T DOS to write SEE ERROR on the console screen S3 at logic 1 causes T...
Page 24: ...0 might occur if drive worn if diskette accidentally removed while System operating or if drive electronics fail To recover if diskette accidentally removed replace it then reboot System otherwise jus...
Page 25: ...backup file is not available typing R causes TIDOS to Retry the operation four times If the error recurs try pressing Ragain If the error does not go away after several retries press RETURN TIDOS now...
Page 26: ...L 0 5 4 f2 I J IiI I I ill i I...
Page 27: ...L 1 1 1 1 3 I I I I p f rr l i j II i I r i_ U t 001 l...
Page 28: ...I I _ 1 t l 5a l t J _ If I _OC_ I I Ii j I il J I 3 tl lll rrc t lT111L 00 r I J E oil ii _ 14086 no il r IT TUl U fI _UC _ n 1 __ I J _ _ _ _ _ 0 _...
Page 29: ...TU I AIU lIiT 0 I I OI llISION 1 TOUIA HTIACT NO IffiTExAS EucrRONK IHSTlUMlNTS k UNUU NOli on t It II t M IlOUSlON TU L II Of ll oHAf n CAli SCrlErA A TIC FDC 3 tl Ie va Al OOUlAI t 0 Ofl WO Aet N _...
