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- ;ENVPKG.ASM - Jim Kyle - July 1990
-
- .model small,c
-
- .data
- ; assumes being used from C with _psp global variable
- extrn _psp:word
-
- .code
-
- curenvp proc
-
- public curenvp
- ; char far * curenvp( void );
-
- mov ax,_psp ; get PSP seg
- mov es,ax
- mov dx,es:[002Ch] ; get env address
- xor ax,ax ; offset is zero
- ret
-
- curenvp endp
-
- mstenvp proc
-
- public mstenvp
- ; char far * mstenvp( void );
-
- mov ax,352Eh ; get INT2E vector
- int 21h ; (master segment)
- mov dx,es:[002Ch] ; get env address
- xor ax,ax ; offset is zero
- ret
-
- mstenvp endp
-
- envsiz proc oenv:word, senv:word
-
- public envsiz
- ; short envsiz( char far * vptr);
-
- mov ax,senv ; get segment of env
- dec ax ; back up to MCB
- mov es,ax
- mov ax,es:[0003h] ; get size in grafs
- ret
-
- envsiz endp
-
- end
-