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DEF FN DirectivesI am looking at using some machine code functions from the DK Graphics Pack. They are machine code but they are called via Basic with the function de…
... the function defined such as DEF FN g(x, y, p, q ... -
Happy Birthday Dr BeepHappy Birthday Dr Beep... ...41 or 29H or 101001b today.
Happy Birthday Dr Beep...
...41 or 29H or 101001b today. -
Happy Birthday Dr. Beep !!Happy Birthday Dr. Beep ! Have a good day, have a beer: [_]p ... and keep on beeping those tunes!
Happy Birthday Dr. Beep !
Have a good day, have a beer: [_]p
... and keep on beeping those tunes! -
Can you improve this recursive DEF FN?I came up with this function to scan strings for characters without needing to use FOR...NEXT and IF...THEN, but it seems rather long-winded. Can any…
... ?
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$,1)*100). -
BASin v.15 DEF FN bugThe bug would appear to be in "BASSupport.pas : Procedure ProcessDEFFN"; as it's not inserting the 6-byte variable place holder after each parameter …
... after each parameter in the DEF FN definition. There's code there ... -
Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... nowhere.
[code]
2 DEF FN t$(n,t,d)
+VAL$ (("FN t$("
+STR$ (n-INT ... -
Fix for the DEF FN bug of zmakebasSome months ago I discovered a bug in zmakebas: it does not include the 5 bytes required after every parameter of a DEF FN. By the time, the WoS f…
... after every parameter of a DEF FN.
By the time ... -
BASIC Bug: DEF FN after REMHello all, Having mused the Spectrum ROM disassembly by Drs Logan ad O'Hara, I wondered about how good ZX BASIC was at locating the DEF FN when call…
... 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 ... -
those darned recursive functions againI've been stuck on this one all evening. I want to dump out some memory in binary to debug a program. I've got a simple mod 2 division loop to do tha…
... (much later) I remembered Dr Beep's recursive DEF FN version, but in between ... thought I'd write a DEF FN to do it ... and despite ... with:
[code]
100 DEF FN b$(n,s$)
=s ... $+VAL$ (("FN b$(" + STR$ INT (n/2 ... -
Compiling BasicI'm not good in compiling sinclair basic because i was 15 when i got my first spectrum, and it was the first computer i saw. I wasn't aware of compil…
... , Dr BEEP wrote:
It might even be done with a recursive DEF FN ... (A$)
and a DEF FN V(A$)= .... in the begin ... -
New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... : POKE 23620,0
[Dr. BEEP]
====================
* General ... read them in a SCREEN$. [Dr. BEEP]
* Alternatively if you want ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
[QUOTE=Dr BEEP;171915]I would do it like this:
[code]
DEF FN h$(x) = "0123456789ABCDEF"(INT(x/16))+"0123456789ABCDEF"(x-16*INT (x/16))
[/code][/QUOTE]
Dr Beep, that is a very cool lateral solution, which even I understand! :-) -
Game OptimisationBelow is a section of code Im using for movement enermy display and collision detect. What happens is that you move the sight with ,.qa and space do…
[QUOTE=Dr BEEP;192968]The second respond isn' ... in Sinclair Basic:
Define DEF FN in top, place GO SUB ... at the moment is the DEF FN part but apart from that ... -
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... variable crosswind.
Added DEF FN r() to read the keyboard ... to use a trick that Dr. BEEP showed me last month, which ... -
New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…
... in #591 which has the DEF FN removed. I agree it is ... still have the possibility of Dr. BEEP's 1 character saving from ... -
Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
[QUOTE=Paddy Coleman;478487]Hi Dr. Beep,
...
Yeah I know ... the time stuff in a DEF FN but for some reason they ... -
variable variable names with VAL$It's possible to make the RH-side variable names in a LET statement be themselves variable by using VAL$. Thus, if v$ holds the [b]name[/b] of anothe…
[QUOTE=Dr BEEP;483699][code]
1 let b$="hello"
2 let v$="b$"
3 let a$=VAL$ v$
4 print a$
[/code][/QUOTE]
Very nice - scope for a [B]DEF FN[/B] there ?! -
automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …
... a slightly altered version of Dr BEEP's "scanning" method for passing ... my former method of using DEF FN. The changes are that I ... -
numbers to binaryHi everyone, I have looked through the manual and have found nothing. How do you change a number to binary easily? I know you can go binary to decim…
... interesting
[QUOTE=Dr BEEP;544274]1 def fn b$(d)=val$ (("str ... :
2 DEF FN c$(d,b)=VAL$ (("FN z$(d)" AND ... d=b))
5 DEF FN z$(d)=CHR$ (d+48 ... />
:smile:
And FN c$(45648,36) gives Z80 ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... I can't wait for Dr.Beep any longer.
It ... the AEDCB form used by DEF FN and the calculator; the 14 ... -
Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
... on some changes made by Dr BEEP on WOS. Note: as described ... code sets up a dummy DEF FN of a$:
[CODE ... 29 ) Closing parenthesis for the DEF FN[/CODE]
Next we need ... -
Screens and BasicA question about the ZX screens. I am using software to convert my own art and drawings to the ZX Spectrum. I have some tools to change .jpg files in…
... quick BASIC technique mentioned by Dr.BEEP for restoring SCREEN$, modified ... br /> DEF FN l(v)=v-FN h(v)*256: DEF FN h(v ... REM Calculate the location of DEF FN a$(a$) & initialise ... 23563 = DEFADD = address of DEF FN parameters
31 RESTORE 30 ... -
Raising to the powerA curiosity of ZX Basic I found yesterday is that you can't do this: [code] 10 LET x=-3 20 LET y=x^2 [/code] While you can for example do LET y=-3^…
... in as well.
DEF FN p(n,e)=ABS n ... )
Any resemblance to Dr BEEP's expression is purely coincidental.
