... the function defined such as DEF FN g(x, y, p, q ...

... ?

Using:

DEF FN w(w$,o$,c)=VAL ... (("FN w(w$,o$,c+1)" ... />
with:

w$(FN w(w$,o$,1))
FN w(w$,o$,1)*100).

... after each parameter in the DEF FN definition. There's code there ...

... nowhere.
[code]
2 DEF FN t$(n,t,d)
+VAL$ (("FN t$("
+STR$ (n-INT ...

... after every parameter of a DEF FN.

By the time ...

... BASIC was at locating the DEF FN when called upon.

[code]
10 DEF FN a()=10
20 PRINT ... :
[code]
10 REM : DEF FN a()=10
20 PRINT ... ROM routine that looks for DEF FN, DATA and (oddly) NEXT appears ...

... copied quickly by using the DEF FN trick which Paddy mentioned to assign ...

... simple thing:

10 def fn a(x)=x*10
20 print fn a(10)

and ...

... DEF FN b(h$)=16*FN n(h$(1))+FN n(h$(2)):
DEF FN ... g(v)=v-FN ... h(v)*fg: DEF FN ... h(v)=INT (v/fg):
DEF FN p ... LET prog=FN p(23635): LET vars=FN p(23627 ...

... this code:
[code]10 DEF FN f(a,b)=a+b ... , if I change the DEF FN to: DEF FN f(a,b)=a, the ... call.

[code]10 DEF FN f(a,b)=a+b ...
20 DEF FN g(a,b)=a+b ... !
40 PRINT FN f(FN f(2,FN g(3,1)),4 ... !
100 PRINT FN g(FN g(2,FN g(3,1)),4 ...

... point decimals, a slightly trickier trick allows string pointers to be ... /> 9999 LET t1=FN t(): LET t2=FN t(): LET t0=t1 ...

... />
The [b]first trick[/b] is the ability to ... bytes to room the trick using DEFADD as Battle ... />
The [b]second trick[/b] is the ability to ... />
The [b]third trick[/b] is the ability to ... /> 3 DEF FN l(v)=v-256*FN h(v): DEF FN h(v ...

... variable crosswind.

Added DEF FN r() to read the keyboard ... I had to use a trick that Dr. BEEP showed me ...

... places, you could use a DEF FN to position the cursor like ... SOKO-BAN LINE. Maybe this trick could also help you here.

... places, you could use a DEF FN to position the cursor like ... SOKO-BAN LINE. Maybe this trick could also help you here ...

[code]
1 DEF FN a(r,n)=r-INT ( ... ;"O"),3:
LET c=FN a(3+PEEK 23673,256 ... $(p)=x$):
PRINT "Room:";FN a(CODE c$(p),40 ... x$=h$;"NESW"(g);":";STR$ (FN a(CODE h$,40)^2 ...

... a pity that Philip's trick for implementing recursion in Sinclair ... it... :)

[code]10 DEF FN b$(n,d)=VAL$ "STR ... $(INT (n/d),d/2)+FN b$(n-d*INT (n ... -255): ";n
30 PRINT FN b$(INT (n/16),4 ... );FN b$(n-16*INT (n/ ...

... command, so if I could trick the ROM into treating the ... area used by user-defined FN evaluations. I'd often used ... first I tried using a DEF FN to assign the display file ... I could use LET s$=FN s$(), but I got ... was using a user-defined FN by POKEing DEFADD with an ...

Oh dear, 'bits' and the DEF FN command are not my strong points! :confused:

Reading 61438 should do the trick, how do you do it from machine code?

I've used IN A,(239) or something similar in the past...

... ]Reading 61438 should do the trick, how do you do it ... 't have to deal with DEF FN, but you will have to ...

... CAT loop (line 21). The trick is to assign any variables ... :

[code]
2 DEF FN p(a)=PEEK a+256 ... 23740,15:
LET k1=FN p(23643): CAT : LET k2 ... =FN p(23643):
POKE 23739, ...

... or am I missing (another!) trick?

Many thanks

[code]
10 DEF FN a(b,c)=USR 60000 ...
20 RANDOMIZE FN a (x,y)
[/code ...

... now ignored (BadBeard)
Fixed DEF FN statements - not correctly tokenised (Chris ...

... a thing or two regarding Def FN and special pokes etc etc ...

... [/i])
[code]
DEF FN B(b$)=VAL(CHR$ 196 ... [/i])
[code]
DEF FN C$(n)=CHR$ INT (n ... [/b]()
[code]
DEF FN F()=65536-USR 7962
[code]
DEF FN H$(n)=CHR$ (INT (n ... [/i])
[code]
DEF FN L$(l$)=CHR$ (CODE l ...

... /> Fixed Crisis's bug with DEF FN, and colin's problem with ...

Are there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc?

The Spectrum BASIC manual only glosses over them without going into a lot of detail.

Necros.