Category : Assembly Language Source Code
Archive   : RHSTDLIB.ZIP
Filename : SHELL.A

cseg segment para public 'code'
assume cs:cseg, ds:dseg
;
include stdlib.a
;
;
; Variables that wind up being used by the standard library routines.
; The MemInit routine uses "PSP" and "zzzzzzseg" labels. They must be
; present if you intend to use getenv, MemInit, malloc, and free.
;
;
public PSP
PSP dw ?
;
;
;
; Main is the main program. Program execution always begins here.
;
Main proc
mov cs:PSP, es ;Save pgm seg prefix
mov ax, seg dseg ;Set up the segment registers
mov ds, ax
mov es, ax
MemInit ;Initialize Memory Manager
;
Quit: mov ah, 4ch
int 21h
;
;
Main endp
cseg ends
;
;
; Normally, you should allocate global variables in DSEG:
;
dseg segment para public 'data'
dseg ends
;
;
; Allocate a reasonable amount of space for the stack (2k).
;
sseg segment para stack 'stack'
stk db 256 dup ("stack ")
sseg ends
;
;
;
; zzzzzzseg must be the last segment that gets loaded into memory!
;
zzzzzzseg segment para public 'zzzzzz'
LastBytes db 16 dup (?)
zseg ends
end Main