Topspeed_JPI/TS/DOC/MAIN.A

(* Last updated - Tue Apr 02 16:00:00 1990.                                *)

(* Copyright (C) 1989 Jensen and Partners. All Rights Reserved*)


sameCS   = 1 - ( (model / 1) & 1 )    (* True in S and C models *)
sameDS   = 1 - ( (model / 2) & 1 )    (* False in XL model *)
NearPtr  = 1 - ( (model / 4) & 1 )    (* True in S and M models *)
_OS2_MT  = (model /  8) & 1           (* True in MT model *)
RegParam = (model / 16) & 1           (* True if register parameters *)

(*%F sameCS *)
frame  =    6                         (* Far call stack frame *)
(*%E *)

(*%T sameCS *)
frame  =    4                         (* Near call stack frame *)
(*%E *)

(* One option must be True *)

Main0Args  = 0                      (* no main parameters *)
Main2Args  = 0                      (* Brings in command line only *)
Main3Args  = 1                      (* Brings in command line and environment *)

(* These Are Default values *)
StackSize  = 04000H                 (* sets stack size *)
HeapSize   = 0FFFFH                 (* sets maximum near heap size *)
SSinDGROUP = 1                      (* selects near stack *)

module main

segment STACK(STACK,74H)
segment _TEXT(CODE,28H)
segment _DATA(DATA, 28H)

RetCode = 0

select _TEXT                    (* main must use _TEXT if S or C models *)

public _main :

(*%F RegParam *)                (* Stack frame calling convention *)

(*%F NearPtr *)                 (* Far data pointer models M, L, MT *)
    ArgC   =  frame
    ArgV   =  2+frame
    EnvV   =  6+frame

    RetSize = 0
(*%E *)

(*%T NearPtr *)                 (* Near data pointer models S, C *)
    ArgC   =  frame
    ArgV   =  2+frame
    EnvV   =  4+frame

    RetSize = 0
(*%E *)
(*%E *)

(*%T RegParam *)                (* Register parameter calling convention *)

(*%F NearPtr *)                 (* Far data pointer models M, L, MT *)
    EnvV   =  frame             (* ArgC = ax, ArgV = cx:bx *)
    RetSize = 0
(*%E *)

(*%T NearPtr *)
    RetSize = 0
(*%E *)
                                (* Far data pointer models M, L, MT *)
(*%E *)                         (* ArgC = ax, ArgV = bx, EnvV = cx *)

    push bp
    mov  bp, sp

    (* your stuff here *)
    mov  ax, RetCode                (* Return Code in ax *)
    pop  bp
(*%F sameCS *)
    ret  far RetSize                (* far return for M, L, MT models *)
(*%E *)
(*%T sameCS *)
    ret  RetSize                    (* near return for S, C models *)
(*%E *)

(*****************************************************************************)
section
segment NEAR_STACK(BSS, 28H)

public __near_stack_start :
(*%T SSinDGROUP *)
  org StackSize
(*%E *)
(*%F SSinDGROUP *)
  org 1
(*%E *)
  db  0

section
segment NEAR_HEAP(BSS, 28H)

public __near_heap_start :

  org HeapSize
  db  0

section
segment _TEXT(CODE,28H)
segment _DATA(DATA, 28H)

select _DATA

(*%T Main3Args*)
extrn __main_args3
public __initx: dw __main_args3; dw _TEXT
(*%E *)

(*%T Main2Args*)
extrn __main_args2
public __initx: dw __main_args2; dw _TEXT
(*%E *)


(*%T Main0Args*)
extrn __call_main
public __initx: dw __call_main; dw _TEXT
(*%E *)
dw StackSize
dw HeapSize
db SSinDGROUP

end