applecatpatch.txt

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Patch list for CATMSFT and CATPCPI CP/M Apple-Cat II modem programs
I have decided not to include the source files, but many of the operating
parameters and features of the programs can be changed by changing bytes
with DDT or EDFILE (Edfile is definitely easier!).
This is an edited version of the .PRN file which resulted from the
assembly of the front end module of the program.  The addresses are
the same for both the Softcard and PCPI versions.
Here is a quick example of how you would use DDT to change an
operating parameter.  Lets say you decided you could really use
that extra two k of buffer, so you want to tell the program not
to save the CCP but to warm boot instead (which frees up the memory).
Looking at the table you would find that the byte SAVCCP is located
010F in memory.  It is set to FF to indicate that saving the ccp is
desired. To make the change (IMPORTANT: do this on a COPY so that
you can go back if you mess it up!) you would bring the program in
with DDT thus:
DDT CATMSFT.COM
(some numbers will appear, which you don't need to worry about.  If
you get a ? that means that DDT could not find the file.)
to change the byte, use the S command (for Set bytes) and type:
S10F
DDT responds with
010F  FF  (the cursor remains to the right of the byte waiting for
          you to change the value or hit return).
Type in a zero and hit return.  DDT will respond with the
next byte in memory to be changed.  Simply type a period to
exit the S mode (and a 'return').
Type control-C to exit ddt.  Now you want to save your
modified file back to disk.  The standard command is
SAVE 85 CATPCPI.COM  (for the applicard version)
SAVE 75 CATMSFT.COM (for the softcard version).
That's all there is to it.  Good Luck!
(P.S.:  If anyone really wants to play with the source code, I can supply it.
It is not possible to change the slot of the apple-cat from slot two without
re-assembling.  Since 99.9% of the Apple world runs their modems in slot two,
the best solution is just to move it over.  If there is some reason you cannot
do this, contact me and I will assemble you a version for the slot you need,
or provide you with the source if thats appropriate.  At this point, this
program must be assembled and Linked with the Assembly Language Development
System for the Apple II from Microsoft.  (I can provide the patches to make
the assembler work with the Applicard, provided you do own the software.))
0109'   00            BAKUPBYTE:        ;FF=make .BAK file
010A'   00            CKSUMDFLT:        ;FF=default to Checksum checking
010B'   FF            TOGLCRC:          ;FF=allow toggling of Checksum to CRC
010C'   00            CONVBKSP:         ;FF=convert backspace to rub
010D'   FF            TOGLBK:           ;FF=allow toggling of bksp to rub
010E'   00            ADDLF:            ;FF=add LF after CR
010F'   FF            TOGLLF:           ;FF=allow toggling of LF after CR
0110'   FF            STRLF:            ;FF=strip LF after CR in terminal file
output
0101'   FF            TOGSLF:           ;FF=toggle strip LF after CR in file
output
0102'   FF            SAVCCP:           ;FF=DO NOT OVERWRITE CCP
0113'   00            LOCONEXTCHR:      ;FF=local command if EXTCHR precedes
0114'   FF            TOGLLOC:          ;FF=allow toggling of LOCONEXTCHR
0115'   FF            LSTTST:           ;FF=ALLOW TOGGLING OF PRINTER ON/OFF
;***** WARNING *****
;The three mode bytes XOFFTXT, XONWAIT, and ECHWAIT are mutually exclusive
; modes.  Do NOT attempt to set more than one of them at a time, as very
; unpredictable results will ensue.
0116'   FF            XOFFTST:          ;FF=ALLOW TESTING OF XOFF FROM REMOTE
                                        ;while transmitting a file in terminal
mode
0117'   00            XONWAIT:          ;FF=wait for XON after sending CR while
                                        ;transmitting a file in terminal mode
0118'   FF            TOGXOFF:          ;FF=allow toggling of XOFF/XON testing
0119'   00            ECHWAIT:          ;FF=wait for echo before sending next
                                        ;character in terminal mode file output
011A'   00            EOFSEND:          ;FF=send eof in terminal mode file
output
011B'   FF            NAKONLY:          ;FF=resends a record only after a valid
                                        ;0=resends a record after any non-ACK
                                        ;FF is intended only for use with
mainframes
                                        ;that send, for example, xoff when
buffer is
                                        ;full
0112'   01            MSPEED:           ;sets the display time to send a file
                                        ;0=110 1=300 2=450 3=600 4=710
                                        ;5=1200 6=2400 7=4800 8=9600
0123'   00            BYTDLY:           ;default time to send character in
                                        ;terminal mode file transfer
                                        ;0=0 delay, 1=0.02 sec, -- ,9=0.18 sec
0124'   00            CRDLY:            ;default time for extra wait after CR
                                        ;in terminal mode file transfer
                                        ;0=0 delay, 1=0.02 sec, -- ,9=0.18 sec
0125'   1E            BELRPT:           ;bell repeat time = value*0.03 sec
0126'   05            NOOFCOL:          ;number of directory columns
0127'   00            DIALSW:           ;DIALER DEFAULT MODE
                                        ;0=TOUCHTONE, 1=PULSE
0128'   10            IDGT:             ;interdigit delay value for touch tone
dialer
                                        ;increase if your exchange needs slower
dialing
                                        ;should be 10H minimum
0129'   FF            BYESAV:           ;FF saves mspeed in 03CH so that xmodem
                                        ;can be used after
012A'   FF            CTLTRP:           ;FF terminal mode traps control
characters
                                        ;(except tab,cr,lf,bs,rub) before
sending to console
012B'   05            EXITCHR:          'E'-40H ; ^E = Exit without disconnect
012C'   0F            LOGCHR:           'O'-40H ; ^O = Send logon
012D'   1A            LSTCHR:           'Z'-40H ; CHANGED DUE TO MAINFRAMES
USING CTL P FOR A 'BREAK'
012E'   12            UNSAVECHR:        'R'-40H ; ^R = Close input text buffer
012F'   14            TRANCHR:          'T'-40H ; ^T = Transmit file to remote
0130'   19            SAVECHR:          'Y'-40H ; ^Y = Open input text buffer
0131'   1E            EXTCHR:           '^'-40H ; ^^ = Send next character
                        ;
                        ;
0135'   1B 59 00                        These bytes define the clear to
0138'   00 00                           end of screen sequence.
                        ;
0145'   1B 2A 00                        These bytes define the clear
0148'   00 00                           screen/home cursor sequence.
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MD5
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