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  • emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…

    ... each screen using the Windows print screen function. It can be ... doing a 6 x 8 pixel block compare on a fixed ... to remove the anti-alias pixel data from a green screen ... thought 3 BITS of sub pixel resolution was good enough for ...
    ASM ASM November 2010 Emulators
  • Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …

    ... .EXE) to perform a 50hz pixel smooth horizontal scroll:

    based cross-assemblers and real-time ...
    ASM ASM November 2010 Development
  • How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …

    ... Calls.

    Custom Print Routines are faster than ROM ... Calls.

    Custom Print Routines give you total control ... posted code to print text on pixel rather than character ... values.

    Custom Print Routines ...
    Turkwel Turkwel November 2010 Games
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... for character

    ; Print matrix
    ; ------------
    LD ... print position for later
    MTXLP LD A,(HL) ; Get pixel ... for 8 pixel lines
    POP HL ; Get print position ... ; -------------
    PUSH HL ; Save print position
    LD A,H ...
    Jonathan Harston Jonathan Harston November 2010 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... /> MTXLP LD A,(HL) ; Get pixel line
    LD (DE),A ... /> INC D ; Step to next pixel line
    BIT 3,D ... for 8 pixel lines
    POP HL ; Get print position back
    print in the 2nd third of ...
    Turkwel Turkwel November 2010 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... for character

    ; Print matrix
    ; ------------
    LD ... 8 pixel lines
    POP HL ; Get print position ... ; -------------
    PUSH HL ; Save print position
    LD A,H ...
    POP HL ; Get print position back

    ...
    Jonathan Harston Jonathan Harston November 2010 Development
  • Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve

    ... presume. (Actually it might be based on some code from a ... /> FOR F= 23755 TO 4E4: PRINT F;"..."; PEEK F, CHR$ PEEK ...
    Dr BEEP Dr BEEP November 2010 Sinclair Basic
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... /> call xor_sprite ; Now print (XOR will print/unprint)

    pixel data

    ; ------------
    ld a,(de) ; Read pixel BYTE
    inc de ; ... 11111111b,00000000b ; Sprite frame pixel data
    defb ...
    sekrets sekrets November 2010 Development
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... /> call xor_sprite ; Now print (XOR will print/unprint)

    ... 00000111b ; Select sprite X pixel frame 0..7
    ... ; DE = address of sprite frame pixel data

    ; ------------
    pixel data
    defb ...
    ASM ASM November 2010 Development
  • New SpecBAS available - Procedures and Functions.Go here: [url]http://www.zxspectrum4.net/forum/viewtopic.php?f=6&t=17[/url] And get the latest if you're interested. I've added procedures and func…

    ... Parameters. I use a stack-based system for everything.

    PRINT for example. You just keep ... calculations until you hit the PRINT token, at which point all ... stack ready for you to PRINT one at a time.
    Dunny Dunny December 2010 Sinclair Miscellaneous
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... mean the program could only print character codes as background graphics ... bytes) is for a 1 pixel shift right, f400-f5ff is ... tables for 2,4,6 pixel shifts. You can use the ... plot to an odd horizontal pixel nothing will crash, you will ...
    Alcoholics Anonymous Alcoholics Anonymous December 2010 Development
  • Activision's Ghostbusters (1984 version)Did anyone ever manage to work out (or hack) the account numbers? If so, are they the same for the 1986 rehash?

    ... GO SUB 9000
    15 PRINT " Ghostbusters account lookup"
    17 PRINT
    20 DIM n ... 32 NEXT i
    35 PRINT n$
    40 INPUT ... 330 NEXT i
    340 PRINT "Account number:";s$
    ...
    The checksum is based on a loop which runs ...
    Jimmy Jimmy January 2011 Games
  • Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…

    ... Paul Dunn):[CODE]5 CLS : PRINT TAB 5;"BASIC RECURSIVE FILL ... (char-perfect as antonym to pixel-perfect), but how to see ...
    NRA NRA January 2011 Sinclair Basic
  • Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…

    ... (char-perfect as antonym to pixel-perfect), but how to see ... /> 1001 LET N=N+1 : PRINT #1;N

    1041 ... />
    However you stack per pixel, not per character, so you ...
    Dr BEEP Dr BEEP January 2011 Sinclair Basic
  • Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…

    ... between moving pixels in tile based system opposed to Spectrum's ... colour attribute data, not its pixel data.

    Instead ... of having a pixel screen, imagine the Speccy had ... move things around in 8-pixel character squares. But you ...
    joefish joefish February 2011 Games
  • Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…

    ... sources. Sinclair BASIC is heavily based upon the interpreted environment. Many ... (a/2) = a/2 THEN PRINT "EVEN": NEXT a
    30 ... (a/2) a/2 THEN PRINT "ODD": NEXT a[/code]
    na_th_an na_th_an February 2011 Development
  • New To Group....Hi All, A quick introduction as this is my first post. I am a Scarborough, UK based chap who is quite heavily into retro computing, more specificall…

    ... only be faulty within the pixel part of the frame ... 255

    then
    PRINT PEEK 16384

    Next ... 0

    then
    PRINT PEEK 16384

    If ... 255 back in the first PRINT PEEK, and 0 back ... in the second PRINT PEEK, then it's ...
    Winston Winston March 2011 Hardware
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... CHANNEL AND ATTACH STREAM
    ; Based on code by Ian Beardsmore ... />
    ; CHANNEL #4 OUTPUT
    ; Based on code by Tony Samuels ... if so
    call pr_64 ; print it
    ld hl, col ...
    chev chev March 2011 Development
  • Fast LogsAnyone know of a fast ln function I can steal? The ROM function seems to be hideously slow. I wrote a look-up table dirty and less accurate sin func…

    ... Raphson square root calculator routine based on the Jupiter Ace books ... N = INT(SQR N) THEN PRINT N
    30 NEXT ... N
    or
    PRINT SQR 1E38 which successfully gives ... so that both
    10 PRINT 1/2 = .5
    ... 20 PRINT .25 = 1/4
    ...
    Geoff Geoff April 2011 Development
  • What am I doing wrong with loading?I recently got my Spectrum working, but I'm having troubles loading games. I plug a cable from my computers soundcard out to the Ear port, type LOAD …

    ... internally on a spectrum, being based on a few resistors, diodes ... LM358 op amp its foot print is very small... even on ...
    Zetr0 Zetr0 April 2011 Hardware
  • Put off by the Spectrum character setAm I the only one? Someone suggests a game, and you go "Ooooo haven't heard of that one, I'll give it a sho...*recoils in horror at the ZX Spectrum c…

    ... means that adding a black pixel automatically means that you’re ... removing a white pixel – and vice versa.

    based on someone else’s work ...
    Paul van der Laan Paul van der Laan April 2011 Games
  • Put off by the Spectrum character setAm I the only one? Someone suggests a game, and you go "Ooooo haven't heard of that one, I'll give it a sho...*recoils in horror at the ZX Spectrum c…

    ... that adding a black pixel automatically means that you’ ... re removing a white pixel – and vice versa.[/ ... stops being a six pixel square it stops reminding ... again, your alternative is based on someone else’s work ... own 40 column font based on the Sinclair one, ...
    chev chev April 2011 Games
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... how to transfer the raw pixel data of the speccy screen ... programs. Like this:
    10 PRINT "Hello World"
    20 GO ...
    Arjun Arjun May 2011 Emulators
  • This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…

    ... create a true character based display which will print anything that goes ...
    chev chev May 2011 Emulators
  • Put off by the Spectrum character setAm I the only one? Someone suggests a game, and you go "Ooooo haven't heard of that one, I'll give it a sho...*recoils in horror at the ZX Spectrum c…

    ... (WYSIWYG). And for pure screen-based typography like in web browsers ... WPF and DirectWrite use sub-pixel positioning to get the font ... like it should regardless of pixel layout. Changing the behaviour of ...
    AndyC AndyC May 2011 Games
  • Random numbers...Hi Folks, I am not an expert when it comes to random numbers. If I have the RANDOMIZE statement the beginning of a program and then proceed to gene…

    ... parameter, this sequence is chosen based on how much time has ... instance:

    [CODE]10 PRINT "Press any key to start ... GO TO 40
    50 PRINT "Choose option 1-5"
    130 PRINT b
    140 NEXT a ...
    Einar Saukas Einar Saukas May 2011 Sinclair Basic
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... . Love the fact you can print at pixel location too.

    Paddy Coleman Paddy Coleman May 2011 Sinclair Basic
  • Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…

    ... $FE7B to the ROM routine PIXEL-ADD at $22AA to calculate ... the extra 16 pixel rows the call to PIXEL-ADD will give ... used if you want to print across the full length of ...
    Battle Bunny Battle Bunny May 2011 Sinclair Basic
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