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- ; Linkage to ANSWER.PCD via ENDCALL.
- ;
- ; This program prevents the user from using i/o redirection.
- ; It also avoids the present glitch in CCPXTEND that causes the
- ; path to be cut short of RUNPCD after some programs have run.
- ; ENDCALL is responsible for ensuring that the caller has
- ; been properly disconnected. This operation allows normal
- ; call termination operations to be injected, and a message to
- ; the departing user.
- ;
- cr equ 0dh
- lf equ 0ah
- tstr equ 9
- setdma equ 26
- chain equ 47
- bdos equ 5
- boot equ 0
- ;
- aseg
- org 0100h
- lxi sp,stack
- lxi d,msg1
- mvi c,tstr
- call bdos; last words to user
- mvi c,87
- mvi e,65; hang up modem
- call bdos
- mvi e,0
- mvi c,84
- call bdos; set state back to 0, remoff
- lxi d,endcal
- mvi c,setdma
- call bdos
- mvi c,chain; run the endcall program
- call bdos; should never return
- lxi d,norsx
- mvi c,tstr; if it does BYERSX is not up
- call bdos
- jmp boot
- ;
- msg1: db cr,lf,cr,lf
- db 'Goodbye, call again',cr,lf,cr,lf,cr,lf,'$'
- norsx: db cr,lf,'BYERSX not running, can''t chain$'
- ;
- endcal: db 'ENDCALL',0; put at end for easy patching
- ds 64
- stack:
- end
- ╘╞