The routine below is a modification for MBYE33 to allow using the
AVATEX 300/1200 modem without needing remote input to set baud
rate and begin the program. This is presented as a guideline only,
as my MBYE33 has been heavily modified (including multiple users
and wordwrap chat), but should work with any BYE. The AVATEX should
be set to the "1200" mode of response codes. The rest is automatic.
MBYE should be set to "NO" for all modem options, and S300 and
S1200 should be "YES"
RINGWT:
;
CALL VCONSTAT ;check if console key ready
ORA A
JZ RNGWT1 ;nope, check for ring/carrier
CALL VCONIN ;yep, get console key
ANI 7FH ;strip parity bit
;
IF FKEYS
CPI BELKEY ;bell key?
CZ TOGBEL ;if so, toggle console bell on/off
CPI CLRKEY ;clear screen char?
CZ CLRSCRN ;if so clear the screen
CPI 27 ;IF ESC, CHECK FOR EXIT
JZ USRCHK
ENDIF
;
C40: CPI 'C'-40H ;CTL-C?
JZ USRCHK ;check for exit
;
RNGWT1:
;
CALL MDINST ;See if a character is waiting
JZ RINGWT ;Nope, go check other things
JMP GCHA ;ok! get it!
ANOT: CALL MDINST ;check for another
JNZ GCHA ;go get it
CALL MDCARCK ;check for a carrier-if present,check buffer
JZ ANOT ;no carrier, loop
LDA TCHAR ;load the buffer
CPI 'T' ;is it a "T"? last thing from a 300 connect
JZ ANT3 ;then go answer as 300
CPI '0' ;is it a "0"? Connect 1200
JZ ANT12 ;jump to 1200 connect
CALL MDCARCK ;if a carrier,
JNZ ANSWERA ;we missed - go do dumbmodem logon
UNK: XRA A ;else clear the buffer
STA TCHAR ;
JMP RINGWT ;go wait again
GCHA: CALL MDINP ;get the chaacter
CPI '0' ;store it if a '0'
JZ NGC ;
CPI 'T' ;store it if a "T"
JZ NGC ;
CPI 'R' ;R means NO CARRIER or ERROR
JZ UNK ;so go wait again
JMP NGR ;none of above, so clear
NGC: STA TCHAR ;store it in TCHAR buffer
NGR: XRA A ;clear A
JMP ANOT ;try for another
ANT3: CALL SET300 ;set port to 300
MVI A,BP300 ;store the baud pointer
STA MSPEED
XRA A ;clear A
JMP ANSWER ;go load welcome, etc.
ANT12: CALL SET1200 ;set port to 1200
MVI A,BP1200
STA MSPEED
XRA A
JMP ANSWER ;go load welcome
;
;
;
;
The following mods go in "ANSWER" right before ANSWERA - which is now
set to perform only the answering after an error has occurred. This
routine bypasses ANSWERA, which is not necessary if the above worked!
;
;
IF NOT (SMODEM OR SM1200)
;
MVI B,10
CALL DELAY
CALL FRSTCR ;check for initial carrier
JC HANGUP2 ;no carrier, forget it...
JMP WELCOME
;
;
ANSWERA:
;
CALL SET300 ;set speed initially at 300
CALL MDINP ;clear garbage characters
CALL MDINP
CALL FRSTCR ;check for carrier the first time
JC HANGUP2 ;wasn't a voice call
ENDIF
;
;
OTHER CHANGES:
Add (in flag/msg areas near end of pgm)
TCHAR: DS 1 ;Space for the character buffer
Add in HANGUP2 (above RINGWT)
XRA A
STA TCHAR
CALL SET1200
That's it! Should work in any BYE if placed in the proper loop of FKEYS
and Modem response checking.
Should also work with any 3/1200 modem that issues different responses
for 300 and 1200 connect. Unfortunately, the VOLKS doesn't issue
dependable responses for 300 connect, but since it locks up every 10th
call anyway, doubt if that's much of a problem!
The above is being used on two of the AMY<>BBS systems, THE APARTMENT
(904-737-6654) and HOTEL SORDID (904-777-3311), both running on TRS
Model 4's with CP/M.
Charles McHan
AMY <> BBS
MULTI-SYSTEM
(904) 725-7461
(904) 725-1226
