cpkerm.bw2

   1 Re:  Problems with CP/M Kermit Version 4.09
   2
   3 Following is a list of problems and their solutions for CP/M Kermit
   4 Version 4.09.  Bear in mind that the latest version of CPSPK1.ASM I have is
   5 edit (11) and of CPSPK2.ASM is edit (4).
   6
   7 Problem:  When the terminal is in "quiet" mode, initiation of file-transfers
   8         causes lots of garbage to appear on the screen which is distracting
   9         and which raises havoc with voice output devices.
  10 Diagnosis:  In the module CPXCOM.ASM, the routine "prtstr" has two flavors:
  11         one for machines which cannot display control-characters via BDOS
  12         function 9 and one which can display such characters via function 9.
  13         In this latter case, only register pair BC is saved around the BDOS
  14         call.  This is insufficient as BDOS also clobbers register pairs
  15         DE and HL during the call.  In "quiet" mode, at least one of these
  16         pairs is expected to remain constant.
  17 Solution:  Save register pairs DE and HL around the function 9 BDOS call.
  18
  19 Problem:  When GETting a file, the initialization routine "init" is executed
  20         twice.  This doesn't harm anything and may not be noticeeable in
  21         print but is most annoying when using voice output as "init" types
  22         out the Kermit version and screen initialization strings and thus
  23         one hears them twice.
  24 Solution:  In the module CPSPK1.ASM, move the label "read0a" down one line
  25         so that the common code for the "receive" and "get" commands starts
  26         just *after* the call to "init" is made in "receive" mode.
  27
  28 Problem:  With "auto-receive" set to "off", after a RECEIVE has completed,
  29         Kermit waits for Console input; then looks for more data to receive
  30         when there is none.
  31 Diagnosis:  In the module CPSPK1.ASM, when the status of "auto-receive" is
  32         checked, the wrong label is branched to if "auto-receive" is OFF.
  33 Solution:  Change the instruction "jz read5c" to "jz read5b".
  34
  35 Problem:  Files whose filenames are less then 8 characters in length have
  36         ASCII zeros ("0") appended to them.
  37 Diagnosis:  In the module CPSPK2.ASM, after label "gofi7b", where the status
  38         of "file-warning" is checked, the code for the appending of "&"
  39         characters to filenames if the file already exists on disk has been
  40         commented out and new code putting numeric suffixes on filenames
  41         in this case has been substituted.  In the process, the code for
  42         checking for a file's existence has been accidentally commented out.
  43         Thus, if "file-warning" is "on", *every* file is assumed to have
  44         a duplicate and a numeric suffix is added to each filename.  In
  45         addition, no warning of this is given on-screen.
  46 Solution:  (1) Uncomment the code which checks for the existence of each file.
  47         (2) Uncomment the code which prints the file-warning error message
  48         and put a "lxi d,fnbuf" instruction between the "stax d" shown in
  49         CPKERM.BWR and the call to "prtstr" so that routine can print the
  50         filename of any file whose existence has been detected.
  51
  52
  53 With these changes, Kermit-80 performs like a champ.
  54 Following are file comparisons showing the changes noted above.
  55
  56 ************
  57 File DISK$USER:[OGRFJMF.KERMIT.CPM]CPXCOM.ASM;1
  58   418           push    b
  59 ******
  60 File DISK$USER:[OGRFJMF.KERMIT.CPM.HP125]CPXCOM.ASM;1
  61   418           PUSH    H
  62   419           PUSH    D
  63   420           push    b
  64 ************
  65 ************
  66 File DISK$USER:[OGRFJMF.KERMIT.CPM]CPXCOM.ASM;1
  67   422           ret             ; all done for good machines
  68 ******
  69 File DISK$USER:[OGRFJMF.KERMIT.CPM.HP125]CPXCOM.ASM;1
  70   424           POP     D
  71   425           POP     H
  72   426           ret             ; all done for good machines
  73 ************
  74
  75 Number of difference sections found: 2
  76 Number of difference records found: 4
  77
  78 DIFFERENCES /IGNORE=()/MERGED=1/OUTPUT=DISK$USER:[OGRFJMF.KERMIT.CPM.HP125]CPXCOM.DIF;1-
  79     DISK$USER:[OGRFJMF.KERMIT.CPM]CPXCOM.ASM;1-
  80     DISK$USER:[OGRFJMF.KERMIT.CPM.HP125]CPXCOM.ASM;1
  81
  82 File 1) DSKE:CPSPK1.ASM[10,50,KERMIT,CPM]       created: 1940 26-Aug-89
  83 File 2) DSKE:CPSPK1.ASM[10,50,KERMIT,CPM,HP125] created: 2247 27-Aug-89
  84
  85 1)1     read0a: call    init            ;clear line, initialise buffers
  86 1)              lxi     d,remnam        ;[gnn] save local name here
  87 1)              mvi     a,cmtxt         ;[gnn]
  88 ****
  89 2)1             call    init            ;clear line, initialise buffers
  90 2)      read0a: lxi     d,remnam        ;[gnn] save local name here
  91 2)              mvi     a,cmtxt         ;[gnn]
  92 **************
  93 1)2             jz      read5c          ; no autoreceives, so drop out
  94 1)              lxi     d,anymes        ; load up Press any key to continue
  95 ****
  96 2)2             jz      read5b          ; no autoreceives, so drop out
  97 2)              lxi     d,anymes        ; load up Press any key to continue
  98 **************
  99
 100 File 1) DSKE:CPSPK2.ASM[10,50,KERMIT,CPM]       created: 0829 28-Aug-89
 101 File 2) DSKE:CPSPK2.ASM[10,50,KERMIT,CPM,HP125] created: 2259 27-Aug-89
 102
 103 1)1     ;       mvi     c,openf         ;See if the file exists.
 104 1)      ;       lxi     d,fcb
 105 1)      ;       call    bdos
 106 1)      ;       cpi     0FFH            ;Does it exist?
 107 1)      ;       jz      gofil9          ;If not create it.
 108 1)      ;       lxi     d,infms5
 109 1)      ;       call    error3
 110 1)      ;       lda     temp2           ;Get the number of chars in the file name.
 111 ****
 112 2)1             mvi     c,openf         ;See if the file exists.
 113 2)              lxi     d,fcb
 114 2)              call    bdos
 115 2)              cpi     0FFH            ;Does it exist?
 116 2)              jz      gofil9          ;If not create it.
 117 2)              lxi     d,infms5
 118 2)              call    error3
 119 2)      ;       lda     temp2           ;Get the number of chars in the file name.
 120 **************
 121 1)1             call    prtstr          ; write string to console
 122 ****
 123 2)1             lxi     d,fnbuf         ;[MF]Point to string
 124 2)              call    prtstr          ; write string to console
 125 **************
 126 \f
 127
 128 I may be reached on BITNET by E-mail to mailer@uwalocke with the subject-line
 129 containing the phrase <dec10%"bpa">.
 130 -- Mike Freeman; Bonneville Power Administration; Vancouver, Wa;
 131 Telephone (206)690-2307 --