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OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
... of code that needed reimplementing, and the solution was to machine reverse ... (e.g. PR. instead of PRINT). The EDIT key is gone ... the LDIR block data copy machine code command), ON ERROR (error trapping ... your own code (not a lot on a 48K machine, but quite ... -
SpecBAS 0.747 Now available!Hiya folks - it's update time again! SpecBAS has had a load of new fixes, as well as some new additions! Firstly, as you all wanted it, SpecBAS can…
... what's new:
[code]
What's new for ... /> CENTRE as part of the PRINT/INPUT items list - takes one parameter ... , not the specified line
[/code]
The new ORIGIN ... -
Best books & Sugested reading..Hi i was trying to search the forum but couldnt find it. Looking at WOS there is a number of books on BASIC, programming, machine code ect.. I mess…
... able to do simple things, input, output, maths, changing the ... am reading Introduction to Spectrum machine code now.
But what ... how can change the actual input to some other color than ... CHR$ 16+CHR$ 2+"INPUT SOMTHING:"
20 INPUT (A$); LINE A ... -
Machine code loopsThis might sound a bit daft, but I,ve forgotten how to do loops using th 'b' register... I want to loop this x mount of times: [CODE]ld a,r and 6 i…
... mount of times:
[CODE]ld a,r
and ... /> call 43100
call 45000[/CODE]
There is any ... -
saving time populating large arraysI use a variation on this idea for storing machine code at the end of programs without interfering with LIST, then it occurred to me that it would al…
... on this idea for storing machine code at the end of ... 9999:
IF checksum THEN PRINT "d$() undefined": STOP
... 23670: POKE 23628,PEEK 23671: PRINT "d$() available":
FOR ... 23670: POKE 23628,PEEK 23671: PRINT "d$() hidden":
STOP ... -
A Miscellany of Dangerous TipsHere's a selection of ideas for using some of the more obscure system variables which I've found handy on occasion. They can be very convenient if us…
... sinclair/books/MasteringMachineCodeOnYourZXSpectrum.pdf]Mastering Machine Code on Your ZX Spectrum[/url ... />
References:
* storing machine code in BASIC (Jan)
* more ... br /> * General purpose full screen input routine (May)
* saving ... -
New Game: Advanced Premiership SimulatorHi Friends, I discovered BASin last Saturday, and I've found it rather fun to play with. I ended up producing this; It's basically (no pun intended)…
... using digital samples (achieved using machine code). There is also some extra ... the season without any user input.
You can ... of BASIC and 25k of machine code and data. There's also ... in C/Java and hobbyist machine coding have certainly changed the ... -
I thought I'd give assembly a goAnd well being an absolute newb,I'm absolutely useless.I need your help. I thought I'd give this a go in zxspin [url]http://chuntey.wordpress.com/20…
... /01/12/tutorial-zx-spectrum-machine-code-game-30-minutes/[/url].
Then after entering 10 PRINT AT 0,0; ?Your score ... -
CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
Is there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in basic? -
Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... of showing how efficient the code is.
I've ... to determine how fast the code runs? -
128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
... machine), one can do a silly trick like this:
[code ... (23620),1
ret[/code]
Ta-da, BASIC ... total crash. Loading BASIC as code from the 128 BASIC interpreter ... ; it's the return from machine code that doesn't.
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... it's very easy to print it. It's easy because ... it a try as Z80 machine code implementation, to see if it ... br />
The listing:
[code] org 40000
Principal ... b,0 ;Flag to not print leading zeros
ld hl ...Self modifying code ??I made a game in C that was mostly accessing arrays and using FOR NEXT loops, I ran out of memory, so I was thinking would it be possible to use sel…
... possible to use self-modifying code so that say 20 FOR ... NEXT loops use the same code?
or 20 array look ... ups can use the same code?
When using C ... always write out all the machine code necessary to do loops and ...How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... ended, I started reading about machine code (in fact one of my ... seeing you all exchange assembly code and wondering how the & ... these guides on how to code, but I can't for ... an "easy" guide called Mastering Machine Code on your ZX Spectrum. Needless ...misunderstanding screen addressingHi I am just reading mastering machine code Toni Baker: [url]ftp://ftp.worldofspectrum.org/pub/sinclair/books/MasteringMachineCodeOnYourZXSpectrum…
... /> I am just reading mastering machine code Toni Baker:
[ ... the address of the “print position”
for any ... consider the point whose PRINT AT co-ordinates are ... the address of this print position are
40 ... the 5,4 in the PRINT AT example.
Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... which plays beeps using a machine code routine which steps through $4000 ... of a 74LS00 quad 2-input NAND gate chip; however it ... EXROM chip in the standard machine is only 8K long and ...How big is the program?I've got the following one line program (running in a 48K Spectrum emulator) [CODE]1 input n:let n=n-int(n/4)*4:print "1 i -1-i"(n*2+1 to n*2+2)[/CO…
... [CODE]1 input n:let n=n-int(n/4)*4:print "1 ... +1 to n*2+2)[/CODE]
With one ... got an old snippet of code from ages ago that ... has executed
[CODE]print "bytes:";peek 23641+256*peek ... 23635+256*peek 23636)+1[/CODE]
this returns ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... a thing as "machine code". 30 years later ... ASCII control code for AT.
rst 16 ; print it.< ... .
rst 16 ; print it.
ld a,( ... coordinate.
rst 16 ; print it.
ret
...Comparison of RS232 port on Interface 1 with that on Spectrum +3/+2AHi everyone, I'm writing a tool (in machine code) to transfer data (for example, an emulator snapshot) between a PC and a real ZX Spectrum, over t…
... 'm writing a tool (in machine code) to transfer data (for example ... difference being that the +3 code accesses the serial port via ... controller, wheras the Interface 1 code uses the ports on whatever ... cope with 19,200 bps input?
Thanks in advance ...Simple bit of machine code not working [SOLVED]ishHi all. It's late and I'm tired and I have no idea why the following piece of code wont display a little smiley face [code]ld hl,udg ld (236…
... why the following piece of code wont display a little smiley ... face
[code]ld hl,udg
ld ... ,126,126,66,60,24[/code]
I'm using ...140 characters Basic game contestHey there, I've announced a new micro contest on my blog (in Czech language only). However, it might be interesting also for the non-Czech/Slovak …
... example:
[code]1 PRINT "Hello world"[/code]
- are 21 characters ...
[code]1 FOR f=10 TO 20 STEP 2: PRINT f ...New Game (2016 revival): A Yankee in Iraq (1992)Hello everyone, Way back in 1992, I wrote a shoot-em-up called [i]A Yankee in Iraq[/i]. The entire game was written in Sinclair BASIC. Recently, I…
... tips on loading BASIC using machine code can be found here: [url ... LPRINT routine with a plain PRINT statement to display the name ...how to load machine codeI'm reading Jon Caldwell's how to write Spectrum games but can't enter the code! Here's an example:_ LD BC, (score) Call 6683 I tried putting…
... but can't enter the code! Here's an example:_ ...Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…
... part 4 of the "Machine Code Calculator" series in ZX ... /> 3276 31940950 0
[/code]
http://www ... 9999: LET st=t0: PRINT #0;AT 0,0;" ... 9999: LET ft=t0: PRINT #0;AT 1,0;"Finish ... st)*100+0.5)/100: PRINT #0;" Time=";time;" secs ...The Complete Machine Code Tutor - bug?Dear all, I'm having a fiddle with The Complete Machine Tutor and have come to the bit where they're adding registers together. The image on the l…
... a fiddle with The Complete Machine Tutor and have come to ..."ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... the keypress with LET i=CODE INKEY$, then z(i) would ... means, I know nothing about machine code, and I'm never going ... every time I want to PRINT something on the stack, and ...The trouble with good code isLots of times I've come here to ask for help and always got it pretty promptly. Which is wonderful and one of the reasons why I don't think there's a…
... trying to learn hex and machine code until I have a thorough ...Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…
... Metcalf:
[code]; scanline fill by John Metcalf ... br /> jp (hl) 60102 E9[/code]
Thought I ... program:
[code]100 CLEAR 60000
110 ... br /> 160 PRINT "Hex ";H$;" ";
170 LET H= CODE H$(1 ...Using BASIC from Machine CodeHi Folks, Came across a very interesting article by Toni Baker in Your Spectrum: http://www.users.globalnet.co.uk/~jg27paw4/yr11/yr11_66.htm …
... 's assembler:
[code]
ORG 62000
[/code]
The above ... it via:
[code]100 CLEAR 61999
110 ... /> 120 LET A=USR 62000[/code]
The Spectrum crashes ...Custom Menus on the ZX Spectrum +3Today, my Friends, i have the pleasure of presenting a program i have written which gives a set of custom menus on the +3. The main features of my p…
... : permitting the use of a Machine Code Monitor (MONP3 from the HiSoft ... the same as the [b]Print[/b] in the standard menu ...
