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Technician Ted disassemblyOkay, by popular (?) demand I have dug out my old disassembly notes on Tech Ted, converted them to skoolkit and stuck them up at [url="https://github…
... completely undocumented snapshot of raw machine code, but at least I've ... similar manner, test for bit 0 with SRL A; JR C ... -
Tape to +3 disk transferWhen the first basic part was merged from tape, to be saved to disk, and it looked like this: [img]https://i.imgur.com/UQx1hc2.jpg[/img] how di…
... LOAD "nifty.c" CODE 33000
30 PAUSE 200: RUN USR 44138 ... [/code]
I hope ... their intended location using a machine code routine. If you try to ... later.
(BTW, that PAUSE 200 in the BASIC loader ... -
counting in assembleri have this program which cycles through the character set. how do i do this with numbers say 0 to 65535? org 40000 ld b,120 ld (23612),a L…
... br /> jr z,display3
[/code]
should be
[code]
ld a,(hl)
cp 0
jr ... z,display3
[/code]
machine code)...
Calling the ... -
is there a way of bypassing the rom and having 64 columns mode running all the time?i have tried various 64 column print routines but none of them seem to do this. i would like it to do 64 column mode for listings, typing, editing, p…
... of RIGHT oriented characters (bits 0-3)
then simply ... char set using a small machine code shift routine but that was ... -
border effectsive been playing around with border effects like 10 border 1 20 border 2 30 pause 1 40 goto 10 ,etc i even wrote one in machine code. …
... single frame. Throw in a PAUSE 1, which does wait for ... and accurate cycle timing of machine code if you want to actually ... -
border effectsive been playing around with border effects like 10 border 1 20 border 2 30 pause 1 40 goto 10 ,etc i even wrote one in machine code. …
... is still drawing it.
PAUSE 1 doesn't strictly wait ... />
With the speed of machine code, you can make each line ... -
what does the USR command actually stand for?im sure its an acronym, if i remember rightly. ____ sub routine?
... input some value into the machine code.[/quote]
Mostly true, but ... 40000+X where X is 0 or 1 and so pass ... or off.
Your machine code could return in BC an ... called.
Or your machine code could insert itself into one ... -
Looking for any maze game where the map is different every timeHi folks, I'm looking to sharpen my game writing skiils (or lack thereof!) and I need an example of a simple maze game which creates a different map…
... code]
10 LET ml=5
20 INK 0: PAPER 0: BORDER 0 ...
100 PRINT AT 0,0;"###############################";
110 FOR i ... 200 REM PRINT #1;AT 0,0;r;" ";
210 LET ...
370 INK 0: PAPER 7
380 PAUSE 0
[/code] -
Shrinky challengeInspired by this contest on c64: http://nurpax.github.io/posts/2019-08-18-dirty-tricks-6502-programmers-use.html Make the smallest possible .tap t…
I never even thought of machine code, I blinkered on BASIC.
... .
Use NOT PI for 0
Peek PI gives 255 ... -
Shrinky challengeInspired by this contest on c64: http://nurpax.github.io/posts/2019-08-18-dirty-tricks-6502-programmers-use.html Make the smallest possible .tap t…
... "] I never even thought of machine code, I blinkered on BASIC.
0 in loaders and whatnot for ... -
TutorialsWe are looking at adding a tutorial section to the new site. This can be anything from beginners BASIC to AGD to writing an emulator. It will depend …
... br /> ----- ----- ------ ----
Mastering Machine Code ...... 8 .. Toni Baker ..... ZX Computing ...
First Steps in Machine Code . 6 .. David Nowotnik . ... co.uk/~jg27paw4/pourri/0-surc-contents.htm]{{ Spectrum ... -
Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... reverse. This is exactly 0.70 Volts on both Issue ... , and otherwise it is 0, on both Issues. Is ... should be between 0V and 0.8V. To reliably detect ... the input threshold voltage as 0.714V.
[ ... much depends on how the machine code routine works. Keep in ... -
how do i change the color of the input statement "" and whatever is typed in it?the background ink doesnt seem to change it
... PRINT "[EXTEND MODE, CAPS SHIFT, 0]"
Even though the ... is going to be a machine code trick, if it's even ... -
this code wont give me a random starfieldim using a peice of code that ive copied from a book, ignore most of it as it is redundant. for some reason i get a strange random starfield instead …
... br />
Firstly, [code]AND 175[/code] won't be filtering ... a random (0.255) ... value in A to (0..175). It isn't ... pixels vertically - this is machine code by the way not BASIC ... full range of a byte (0..255).
I ... -
this code wont give me a random starfieldim using a peice of code that ive copied from a book, ignore most of it as it is redundant. for some reason i get a strange random starfield instead …
... br />
Firstly, [code]AND 175[/code] won't be filtering ... a random (0.255) ... value in A to (0..175). It isn't ... pixels vertically - this is machine code by the way not BASIC ... full range of a byte (0..255).
I ... -
type in to learn about IM2I'm trying to mess around with learning about IM2 and I found a nice little article in Sinclair User September 1988, issue 78, Page 70-71 [url="https…
... starting with some "defb 0" which are NOPs... But ... ). Problem is the code writes into memory preceding ... basic, CLEAR, load the machine code "above" the CLEAR, ... run the code, which immediately corrupts the ... 0" right at the start? It'll force the BASIC code ... -
How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…
... near-total non-knowledge of machine code I managed to decompile everything ... (or indeed anything else) in machine code. And despite what I've ... I really understand about this machine code listing is "some numbers are ... comes up with LD A,0 and Batman is far from ... -
How to write a simple C+asm horizontal scrolling game (Tutorial, z88dk)[b]How to write a simple C/asm horizontal scrolling game[/b] [b]Note:[/b] This tutorial has multiple parts... I am still writing but this first pa…
... y = 10;
game_over = 0;
score = 0;
while (!game_over ... special like assembly or machine code here:
[code]
void ... y = 10;
game_over = 0;
score = 0;
while (!game_over ... -
A Sunday grumbleGIVE IN & DROP OUT OR WHAT? The following is not a sensible message meaning that I'm not necessarily going to act upon what the title suggests, I'…
... it does have somewhat machine code, 90% of the code is in BASIC ... anyone here is good in machine code. Some of them are good ... like "1,0,64,201" (a random piece of machine code I just ... use 'assembly language' instead of 'machine code'. (Yes I know everyone uses ... -
Looking for any maze game where the map is different every timeHi folks, I'm looking to sharpen my game writing skiils (or lack thereof!) and I need an example of a simple maze game which creates a different map…
... this one:
[code]
10 REM Maze Generator ... br /> 40 LET nn=0: FOR n=1 TO ... 60 IF nn>0 THEN LET o=of(nb ... GO TO 40
80 PAUSE 0: RUN
90 LET ... TO mw: FOR y=0 TO mh-1: PRINT ... 1,2;" ": RETURN
[/code]
Runs on ... -
(Fixing) The Swordsman of Kraxis 7The Swordsman of Kraxis 7 ([url="https://worldofspectrum.org/software?id=0013314"]link[/url]) is an arcade adventure, from a type-in book (in BASIC).…
... do.)
[code]
1 REM *****THE SWORDSMAN ... SERA IS ";CC
1040 PAUSE 0
1050 PRINT : PRINT ... 3,"ASK THEM FOR HELP",0
1570 DATA ... 1575 DATA "FIGHT HIM",0,"APOLOGISE AND ASK FOR HELP ... MAKING A WRONG MOVE.": PAUSE 0: GO TO 1
