diff options
| author | Tobias Klauser <tklauser@distanz.ch> | 2008-01-27 11:37:44 +0100 |
|---|---|---|
| committer | Tobias Klauser <tklauser@xenon.tklauser.home> | 2008-01-27 11:37:44 +0100 |
| commit | 7e0f021a9aec35fd8e6725e87e3313b101d26f5e (patch) | |
| tree | b1cacc4b24393f517aeb4610e9e1021f954307a8 /reference/C/CONTRIB/SNIP/ndpcheck.asm | |
Initial import (2.0.2-6)2.0.2-6
Diffstat (limited to 'reference/C/CONTRIB/SNIP/ndpcheck.asm')
| -rwxr-xr-x | reference/C/CONTRIB/SNIP/ndpcheck.asm | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/ndpcheck.asm b/reference/C/CONTRIB/SNIP/ndpcheck.asm new file mode 100755 index 0000000..4f788ef --- /dev/null +++ b/reference/C/CONTRIB/SNIP/ndpcheck.asm @@ -0,0 +1,44 @@ + page 55, 132
+
+;
+; FUNCTION: ndp_check
+;
+; Require MASM 5.1 or later, or equivalent
+;
+; Assemble with: MASM /Mx /z ...
+; TASM /jMASM /mx /z ...
+;
+
+% .MODEL memodel,C ;Add model support via
+ ;command line macros, e.g.
+ ;MASM /Mx /Dmemodel=LARGE
+
+ .CODE
+
+control dw 0
+
+;---------------------------------------------------------------
+;
+; Check for an NDP.
+;
+; Returns 0 if no coprocessor
+; Returns 1 if coprocessor present
+
+ PUBLIC ndp_check
+
+ndp_check PROC USES BX
+ xor BX,BX ; set up zero return
+ fninit ; try to initialize the NDP
+ mov byte ptr control+1,0 ; clear memory byte
+ fnstcw control ; put control word in memory
+ mov AH,byte ptr control+1 ; if AH is 03h, you got
+ cmp AH,03h ; an NDP on board !!
+ jne SHORT NDPbye
+ inc BX
+NDPbye:
+ mov AX,BX
+ ret
+
+ndp_check ENDP
+
+ end
|