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Design Design / Crystal ComputingNice post on [URL="http://groups.google.com/group/comp.sys.sinclair/browse_thread/thread/56e6ebdedc6930ac#"]comp.sys.sinclair[/URL] about [URL="http:…
... I was so fed up with 3D graphics by then ... first I got a black screen with red stripes, next I got ... a low buzzzzzzz and white screen, then at last it ... looked at anyone else's code, we had to make it ... pausing it (button on lower-left of main screen)... I have no ... -
Changing the way SCREEN$ is loadedThe way the speccy loads in a SCREEN$ is interesting - top two-thirds first, then middle and finally the bottom, which is due to the way the speccy d…
... you load line by line with 192 loaders.[/QUOTE]
screen away faster than it loads ... have written in machine code don't necessarily require machine code knowledge to use ... -
Interlace demoSorry to reference another thread like this, but in the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?p=313428#post313428[/url] …
... GOTO 10
20 PRINT "ewgf rules OK!"
and instead of filling the screen with comments about me ruling and ... all, the screen went blank!
... [/quote]
Theres nothing wrong with Spud, I would check your code... -
BASIC: Fast way of filling a string?Recently I decided to use string slicing to extract random numbers from a sequence in the one-liner Lottery picker: [quote] 20 RANDOMIZE : LET a$=""…
... ]POKE, that's like using machine code.[/quote]
No POKE ...
Enter
[code]
1 PRINT "THIS WILL BECOME A ... ZERO LINE, NOT EDITABLE!"
[/code]< ... a piece of BASIC-program with a POKE
(changed ... -
Ultimate loading screensAs I'm replaying some of my youth favorites, a question arose today that -- funny enough -- I used to have also back in those times. Maybe someone kn…
... drawn fully on the screen. Some of these games ... the general design of the screen. But not Ultimate, no. ... that's often the case with many things. I didn ... they didn't use Machine Code in their loading screens.< ... couldn't get bothered with this and they just ... -
Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…
... ]
Uploaded "in-game" screen for [b]Copier[/b].
machine code program from microdrive, with filename "copy code".
Luckily, the "copy code ... /> Program does not use loading screen (but already flagged as such). -
What is exactly the scr format?Hello everyone and I hope you are having a wonderful Christmas. I'm trying to understand the use of the scr format. I understand it's a screen memor…
... some games allowed you to print the screen to a ZX Printer ... number of utilities written in screen memory - 007 Disassembler, Utilities ... used as a SCREEN$ on a real machine but with an emulator you ... just loaded the .scr file and typed 'PRINT ... -
Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…
... and extra memory), but with none of the behind the ... before you will call the machine code unless you made a ... Interrupts (DI) before loading code and starting it.
... Just loading the code and returning to Basic for ... (except for the second screen). -
Using INPUT without clearing last two lines of screen?I'm trying to print to the 22nd row of the screen using the ol' print #0 trick. Unfortunately, I require user INPUT which seems to wipe out the botto…
... take input without clearing the lower screen? I'm not sure how ... though![/QUOTE]
[code]
PRINT #1;AT 1,0;"Name ... $; PAPER 7; INK 7
[/code]
The second "AT ... PRINT command but would still work if you poked in the code ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... mentioned, the main problem with them is that the BASIC ... /> Better if possible to use machine code tools.
After ... use machine code. It also runs fine on a 48K machine, testing the lower ... all of the system variables with impunity).
To ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... , I also made a machine code memory tester specifically for 16K ... to determine if the machine is 16K or 48K ... lower 16K RAM too, apart from the first 0.5K of screen ... A fault in the screen RAM pixel area would be ... of the way, onto the screen area).
... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... 1' ; Edit string to print on screen
LD (String2Edit),A ... ; This subroutine is called with the pointer to the failed ... same column TEXTCOLUMN
; With a leading space
... ENDCODE
[/code]
As always, comments ... -
Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…
... ] - I just get a black screen with yellow border when loaded
screen. A quick glance at the code didn't ... one is technically a blank screen (displayed during the few miliseconds ... does not seem like valid machine code to me! -seems more like ... -
Why did the QL fail?Browsing some old magazines: an advert appeared for the QL, 128k of ram and 32 bit processor etc...also very cheap compared to other similar spec com…
... back in '84 when the machine was released.
with Z80 code on a Z380 ( ... external devices ?see? the machine. So it?s both ... 8-bit bus, and lower chip count, power requirements, ... significantly. This, combined with the contended memory of ... -
Need a pointer to using the spectrum calculator from MCHi all, Can anyone point me to a good resource on using the spectrum calculator stack from machine code? I need to work out the number of seconds f…
... ablee to help me with that code snippet! I'm wrestling ... with the stack and not ... been trying: -
[code]
; First, do RESULT * 50 ... />
; call fpprint ;print result on the screen! - CLEARS THE STACK
z88dk Help neededI'm starting my tests with z88dk from a very simple example from a tutorial in speccy.org. It works fine but when I make the smallest modification t…
... />
Be careful with what libraries you use as ... stdio is not 100% machine code and using a single ... a sprite in the screen with sp1 where sprite heigth ... series of examples included with z88dk which you can ... is enough there that with a little imagination you ...Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... much in BASIC. Scraped some machine code together from the complete series ... to let you access the screen and joystick without interruptions.
with the firmware for their 'Mindstorms ..."This is a screensaver that do not save the screen"Which was a quote from the first release of SCREEN$ back in April 2001. Little did he know that, against the best judgement of myself and my peers, I…
... was it would not work with Direct3D selected on the Display ... frame every 3 seconds with sound on. With sound off runs 'OK ... lower screen resolution. 640x480 might be good, and I'm currently adding code ... lower than a Geforce FX5200, on which it runs very well with ...Why does the speccy make you hear loading?Always wondered this, of all the 8-bit 'puters I have owned, only the Speccy makes you listen to the loading sounds from the tape, why??? I assume it…
... sound between screen data, the attributes, and just generic game code loading ... there are subtle differences between machine code and BASIC loading. Both have ... /> SCREEN$ is identified easily... Same pattern repeating 8 times, possibly with subtle ...Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....
... later machine code routines did full 320x200 scrolling on two planes, with ... colours for the sprites on-screen. And all this running ... the start address of the screen ('synch scrolling'). That's ... with the 16-pixel horizontal step because of the way the screen ...Tape and Disk breakpointsIs it possible to set a breakpoint on a .TAP, .TZX or .DSK file so that the debugger pops up when loading finishes? I'm talking about a breakpoint wi…
... of protected BASIC loaders, code blocks with 49152 bytes and auto- ... loaders, loading screens corrupted by machine code and stuff made from . ... with a clean listing, no line 0s, a nice LOAD"" screen ... % clean version with just normal headers and code blocks won't ...Tape and Disk breakpointsIs it possible to set a breakpoint on a .TAP, .TZX or .DSK file so that the debugger pops up when loading finishes? I'm talking about a breakpoint wi…
... loaders, loading screens corrupted by machine code and stuff made from .z80 ... loader with a clean listing, no line 0s, a nice LOAD"" screen ... , but I do additionaly screen and code compression, so there is ... ROM loader to load screen or code), but I modify the ...Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... compiles many Sinclair BASIC programs, with almost no modification. See these ... every IF must be closed with "END IF" (as in Free ... what I try to do with ZX BASIC).
E ... ). Also the machine code, basic area, etc. (LOAD/SAVE DATA/CODE/SCREEN$)
3 ...Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... ). Also the machine code, basic area, etc. (LOAD/SAVE DATA/CODE/SCREEN$)
... [/QUOTE]
just one idea: with all ... error will cause return to machine code. as STOP command raises ... you are doing big thing with your compiler.Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …
... ;352121]I'd take issue with this one in particular. < ... /> A compiler will change this code to machine code, and even [U]optimize ... mix BASIC lines syntax checking with runtime execution), or when there ... BOLD and ITALIC letters. So PRINT ITALIC 1; BOLD 1; .... ...faster bitwise operators?well, sinclair basic lacks bitwise operators and I searched "basic forum" with keyword "bitwise" and only 3 thread came up. So the forum also lacks b…
... mind calling a very small Machine Code function to do the scan ... case of reading some bytes with the bit values spread across ... /> 20 IF PEEK 23316 THEN PRINT "Fire (0)";
30 ... />
Bytes for this machine code program are:
[code]
1, 254 ...Blake's 7I've got an idea for a Blake's 7 video game for the 128K Spectrum (Only problem is I can't code in neither machine code or Sinclair BASIC, so I will …
... is I can't code in neither machine code or Sinclair BASIC, so ... do that!" when presented with the Continue Screen.
[/QUOTE]
... to coding/designing a game with speech samples is not ... or Sinclair"
Combining Kempston with Sinclair in 2-Player mode ...
