sw/rescue/muenchen2013/files/krause_soft/fdsub.bk

   1 /MEMOREX FD651 - FD1771 - DR8EA
   2
   3 /------------------------------------------------------
   4 /FLOPPY DISC CONTROLLER AND DRIVE TEST
   5 /
   6 /       ROBERT KRAUSE  MaY 1983
   7 /------------------------------------------------------
   8
   9
  10 /------------------------------------------------------
  11 /DR8EA - CONTROLLER CONNECTIONS
  12 /------------------------------------------------------
  13
  14 /INPUT
  15 /       0    = -DRQ
  16 /       1    = -INTRQ
  17 /       2,3  = NOT USED
  18 /       4-11 = -DAL (IN)
  19 /
  20 /OUTPUT
  21 /       0    = WE
  22 /       1    = RE
  23 /       2,3  = A1,A0
  24 /       4-11 = -DAL (OUT)
  25 /
  26 /------------------------------------------------------
  27
  28
  29 /------------------------------------------------------
  30 /DR8EA COMMANDS
  31 /------------------------------------------------------
  32
  33 DBDI=   6500    /DISABLE INTERRUPT
  34 DBEI=   6501    /ENABLE INTERRUPT
  35 DBSK=   6502    /SKIP ON DONE FLAG
  36 DBCI=   6503    /CLEAR SELECTIVE INPUT REGISTER
  37 DBRI=   6504    /TRANSFER INPUT TO AC
  38 DBCO=   6505    /CLEAR SELECTIVE OUTPUT REGISTER
  39 DBSO=   6506    /SET SELECTIVE OUTPUT REGISTER
  40 DBRO=   6507    /TRANSFER OUTPUT TO AC
  41
  42
  43 /------------------------------------------------------
  44 /FD1771 COMMANDS
  45 /------------------------------------------------------
  46
  47 QSR=    2       /STEP RATE 10MS
  48 QVE=    4       /VERIFY FLAG
  49 QHL=    10      /HEAD LOAD FLAG
  50 QEN=    4       /ENABLE HLD
  51 QMR=    20      /MULTIPLE RECORD FLAG
  52 QM0=    0       /FB DATA MARK
  53 QM1=    1       /FA USER DEFINED MARK
  54 QM2=    2       /F9 USER DEFINED MARK
  55 QM3=    3       /F8 DELETED DATA MARK
  56 QSY=    1       /SYNCHRONIZE FLAG
  57 QI0=    1       /INTERRUPT NOT READY TO READY TRANSITION
  58 QI1=    2       /    "     READY TO NOT READY TRANSITION
  59 QI2=    4       /    "     INDEX PULSE
  60 QI3=    10      /    "     IMMEDIATE
  61
  62 FDRS=   000!QSR /RESTORE
  63 FDSE=   020!QSR /SEEK
  64 FDST=   060!QSR /STEP
  65 FDSI=   120!QSR /STEP IN
  66 FDSO=   160!QSR /STEP OUT
  67 FDRD=   210     /READ COMMAND
  68 FDWR=   250     /WRITE COMMAND
  69 FDRA=   300     /READ ADDRESS
  70 FDRT=   344     /READ TRACK
  71 FDWT=   364     /WRITE TRACK
  72 FDFI=   320     /FORCE INTERRUPT
  73
  74
  75 /------------------------------------------------------
  76 /FD1771 REGISTER ADDRESSES
  77 /------------------------------------------------------
  78
  79 FCSR=   1400    /COMMAND STATUS REGISTER
  80 FTRK=   1000    /TRACK REG.
  81 FSEC=   400     /SECTOR REG.
  82 FDAT=   0       /DATA REG.
  83
  84
  85 /------------------------------------------------------
  86 /FD1771 STATUS REGISTER BITS
  87 /------------------------------------------------------
  88
  89 FSNR=   200     /NOT READY
  90 FSWP=   100     /WRITE PROTECT
  91 FSHE=   40      /HEAD ENGAGED
  92 FSWF=   40      /WRITE FAULT
  93 FSSE=   20      /SEEK ERROR
  94 FSNF=   20      /ID OR RECORD NOT FOUND
  95 FSCE=   10      /CRC ERROR
  96 FSLD=   4       /LOST DATA
  97 FSIP=   2       /INDEX PULSE
  98 FSCP=   1       /COMMAND IN PROGRESS
  99
 100         FIXTAB
 101
 102 /======================================================
 103
 104 \f