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- * 31.asm Demonstrate TLerror Version 0.00 1.9.97
-
-
- include 'Front.i' ;*** change to 'Tandem.i to step thru TL's ***
-
-
- ; Most tandem.library routines can return with an error condition. Their
- ; MACRO's will generally return EQ if in error. Your program can find the
- ; specifics of the error in xxp_errn(a4). Programs which can return an
- ; error leave xxp_errn(a4)=0 if ok, else they return an error number. If
- ; you call TLerror while xxp_errn(a4)<>0, then it will put an error report
- ; in (a4) (where you can put it up on a requester for acknowledgement), and
- ; TLerror also sends the error report to the monitor. If there is a DOS
- ; error, TLerror also sends that to the monitor.
-
- ; The prgram below does everything on the monitor (CLI), rather than using
- ; intuition windows.
-
-
- strings: dc.b 0
- dc.b $0C,'Demonstrate TLerror',0 ;1
- dc.b 'First, I will try to "Makedir PRT:Fred", which is illegal',0 ;2
- dc.b 'After that failed, I called TLError, which puts this in buffer:',0 ;3
- dc.b '(Press <return> to acknowledge)',0 ;4
- st_5: dc.b 'Makedir >NIL: PRT:Fred',0 ;5 <- an illegal DOS command
- st_6: dc.b 'List >NIL: RAM:',0 ;6 <- a legal DOS command
- dc.b 'Now, I''ll send a (hopefully) legal command: "List >NIL: RAM:"',0 ;7
- dc.b 'Here is what TLerror reports (i.e. nothing since legal)',0 ;8
- dc.b 0 ;9
-
- ds.w 0
-
-
- * sample program
- Program:
- TLoutstr #1 ;greetings
- TLoutstr #9
-
- TLoutstr #2 ;send string 2
- TLoutstr #4
- TLinput
-
- TLoutstr #3 ;string 3 first (else TLerror reports on this)
-
- move.l xxp_dosb(a4),a6 ;set up to execute st_5 (=string 5) as a command
- move.l #st_5,d1
- moveq #0,d2
- moveq #0,d3
- jsr _LVOExecute(a6) ;send an illegal command, to cause an error
-
- TLerror ;get error report to buff
-
- TLoutstr #9
- TLoutstr #4
- TLinput
-
- TLoutstr #9
- TLoutstr #7 ;now send strings 7 and 8
- TLoutstr #8
- move.l #st_6,d1 ;now send a legal command (at st_6, string 6)
- moveq #0,d2 ;(if you re-run this, it will be illegal, since
- moveq #0,d3 ; RAM:Fred will already exist)
- jsr _LVOExecute(a6)
-
- TLerror ;get error report to buff
-
- TLoutstr #9
- TLoutstr #4 ;send to op window
- TLinput ;wait for acknowledge
- rts
-