... .[/quote]

A DEF FN has to have a fixed ... , so you could have DEF FN w(a$, b$, c$)=1 ... all of those with FN so print FN w(a$,b$) would ... , now your example uses the USR function which is not missing ...

... />
[code]
10 DEF FN a$(a)=""
20 CLEAR ... : REM RET
40 PRINT FN a$(USR 40000);
[/code]

... use. The result of the USR call is 1 if the ... +n), 255
1030 PRINT USR(prog + 5)
[/CODE]
FN may want to move argument ... could just be DEF FN e(a$) = USR (prog+5)
[CODE ...

... check routine which uses DEF FN to define the file name ... definition is:
DEF FN o(f$)=USR 49050
where f ... 92 ;DEFADD holds start of FN o(f$) arg
ld ...

... /> Errrm ... use DEF FN to pass arguments to USR routines, as exampled ...

... 9220: DEF FN o(f$)=USR 49050: DEF FN p(t,e ... )=USR 47000
...
900 LET r$=l$(item): IF FN ... r$

The USR 49050 routine is the one ... slightly modified version of) USR 49050. The file name ...

... ,20
40 RANDOMISE USR 64002
50 PRINT ... BASIC you could use a FN. Your example would become ... address of first character after FN
INC HL
10 DEF FN A(X,Y) = USR start_address
20 ... PRINT FN A(10,20 ...

... twice, once with the USR call and once without, ... the difference to get the USR time. Unfortunately using FRAMES ... demo
2 DEF FN t()=65536*PEEK 23674+256 ... LET bc=0: LET bc=USR 30010
70 GO ... /> 90 LET t1=FN t(): LET t2=FN t():
LET ...

... 's "scanning" method for passing USR arguments which, once I got ... former method of using DEF FN. The changes are that I ... from BASIC by:
;PRINT USR stack[,arg1,arg2...,argn],addr ...
ld sp,hl ;undo USR
GETARG: rst $20

... /> [code]
10 LET bc=USR main: LET b$="00000000"
[code]
1 DEF FN b$(b)="00000000"(TO 8 ... STR$ FN b(b))+STR$ FN b(b):
DEF FN b(b ... -INT (b/2)*2+10*FN b(INT (b/2))" AND ... b))
10 LET b$=FN b(USR main)
[/code]

... /> [CODE]
DEF FN b$(b,u)=("" AND USR u)+"0000000000000000"
3 DEF FN b$(b,u)=("" AND USR u)+"0000000000001110": REM ... br /> 2022 LET usr=FN x(a$)
2023 PRINT "usr",usr
2025 ... INPUT j
2030 PRINT "FN b$(j)",FN b ...

...

DEF FN b$(b,u)=("" AND USR u)+"0000000000000000"

but became

DEF FN b ... $(b,u)=("" AND USR u)+"0000000000001110"

... starting address using the DEF FN x(a$).[/QUOTE]
... plus 5 bytes for the FN x(a$) entry and a ... INKEY$ function combined with FN h() which accepted the ... of VARS, so the USR address would be (VARS)+ ... program and variables, so the USR address would then be ( ...

... by: LET a$="123" AND USR address
; or: LET ... a$= STR$ var AND USR address
;test:
... /> ;IF (STR$ var AND USR address)(8 TO 10)="101 ... strings by means of USR, I saw no reason ... for combination with DEF FN.
Still treasures ...

... handling strings by means of USR, I saw no reason for ... combination with DEF FN.
Still treasures can be ... ]
I found useful DEF FN because all variables are vectorized ...

... p, defined as a DEF FN plus a *small* (117 ... br /> 1 DEF FN i(n,t$,s$)=USR 23296
[/ ... br /> 1 DEF FN i(n,t$,s$)=USR 23296
... 2 DEF FN n(n$)= ... 3 DEF FN h(h$)=16*FN n(h$(1))+FN n(h ... br /> 2020 LET p=FN i(p,"is",s$)

... br /> 9990 CLS: RANDOMIZE USR VAL "FN p(23637)+96":
... LET v=FN p(VAL "16384"): LET ... "
9993 LET a0=FN p(VAL "23635"): LET l1 ... br /> PAUSE k0: RANDOMIZE USR VAL "m+88": STOP
USR VAL "m+20":
...

... />
[code]
10 DEF FN h(n)=(n-48)*(n ...

... />
It's a single FN function, defined as this:
[code]DEF FN z(a,b,o$)=USR dir[/code]
[code]FN z(first_expression,second_expression,"&")[/code ... ]FN z(FN z(a, FN z(b,0,"~"),"&"),FN z(b, FN z ...

...
Yes, using FN so that the USR function can pick up ... "USR address" part is only specified in the DEF FN. ... nested function rather than just FN z(a,b,"^").
... To avoid having the USR address on every call but ... I could use DEF FN a(a$)=USR address+VAL a$ ...

... be avoided by defining another FN with the same parameters and ... /> DEF FN z(a,b,o$)=USR dir
DEF FN y(a ... ,b,o$)=USR dir ... written as:
FN z(FN z(scr, FN y(msdk,0,"~"),"& ... a little:
FN z(FN z(PEEK dscr, FN y(PEEK dmsk ...

... so this is OK:
USR mc+VAL "N,PEEK dmsk ... with "", this:
USR mc+VAL "O,(USR mc+VAL ""A,PEEK ... same way as the DEF FN method did, as the operator ... of "". As I said, the FN method is neater.)

FN method come out at 25 ...

... : LET so=go:
PRINT USR ms,k2,em,"v$()",mi ... 1224
1218 LET st=FN s(y$(i))-k3*ir ... STEP k3:
LET loc=FN p(a+bo)
1220 ...

... been loaded at address 'retsub'. FN c() is quite handy as ... : GO SUB FN c()+5: PRINT FN c(): GO TO FN c():
DEF FN c()=PEEK ... (): RETURN
90 PRINT FN c(): RANDOMIZE break+USR retsub
[/code]

... by:
;PRINT USR stack,arg1[,arg2...,argn],address ... /> ld sp,hl ;undo USR
ld ix,0< ... of using the "PRINT USR to calculator stack" method ... function call:
PRINT USR stack,arg1[,arg2...,argn], ... a function; eg. "FN d(2,0)

... by:
;PRINT USR stack,arg1[,arg2...,argn],address ... /> ld sp,hl ;undo USR
ld ix,0< ... of using the "PRINT USR to calculator stack" method ... function call:
PRINT USR stack,arg1[,arg2...,argn], ... a function; eg. "FN d(2,0)

... - no spaces either side
FN to BIN - trailing space
[code]
;PRINT USR stack,string_expression,max_length,substr;

... variable assignments for the USR calls also need to ... 9200 LET s=VAL "FN p(23627)-24": LET p ... =FN p(s):
FOR ... a=s TO VAL "FN p(23627)-4" STEP ... 2":
LET d=FN p(a): PRINT d,"+";d ... if I put the USR call addresses in an ...

... sets up a dummy DEF FN of a$:

[CODE ...
120 FOR a=USR "A" TO USR "A"+8
130 ... ) Closing parenthesis for the DEF FN[/CODE]
Next we need ...