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<1…14151617181920…34>
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... better just using an 8x8 UDG?

    Source code:-

    PLAYERDEAD
    ; Change worm head to "crashed" asterisk ...
    Digital Prawn Digital Prawn September 2008 Sinclair Miscellaneous
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... beginning of the interrupt handler, change SP to another place (i ... /> ld d,(hl)
    inc l
    push de[/code]
    ld (hl),e
    inc l
    ld (hl),d
    inc l[/code]
    You always have ... /> ld (hl),e
    inc l
    ld (hl),d
    Shiru Shiru October 2008 Development
  • BASin r14c - maintenance releaseAfter the recent discussions, BASin has been released as version 14c. It's only a maintenance release, and some of the really big new features are un…

    ... gives me no parameters to change. Am I missing a step ... each DATA statement (a standard UDG set is 168 bytes, a ...
    Dunny Dunny October 2008 Emulators
  • Speccy AY-3-8910 vs. C64 SID ChipI thought I'd open this up for debate. Having owned both a C64 and a Speccy +2, my vote goes to the SID Chip; it is by far the superior sound synthe…

    ... with things like Bionic Commando, L.E.D. Strom, Hydrofool, Thundercats ... astound Commodore 64 owners, but change the perception of home computer ...
    Pegaz Pegaz October 2008 Sinclair Miscellaneous
  • 3d vector graphicsAny1 know where to get source code for 3d vector graphics coord calculation , polygon filling , rendering priority etc etc.. thanx

    ... BMP2SCR versions including the unreleased L-Version (Written in QBasic). These ... /W ErrDiff) disappears when u change scr modes.
    Xor a Xor a October 2008 Development
  • Pyskool 0.1Pyskool 0.1 has been released. To grab a copy, head over to the downloads page: [url]http://pyskool.wordpress.com/releases/[/url] Main new features…

    ... 'm greeted with a prompt cursor.[/QUOTE]
    Have you read ... to open a command prompt, change to the directory containing pyskool ...
    SkoolKid SkoolKid November 2008 Announcements
  • ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …

    ... 48K machine, but if you change the org to something like ... the note length.
    LD L,(IX+0)
    LD (work1 ... the note pitches.
    LD L,(IX+1)
    LD D ... channel 1.
    labl1: DEC L
    JR NZ,labl2 ; ...
    Matt_B Matt_B November 2008 Sinclair Basic
  • Attn: Dunny Re: Basin[QUOTE=Dunny;282407]Just out of interest, is there any demand on these boards for a standalone version of BASin's graphics tools? It'd be just the U…

    ... the whole screen. If the cursor actually changed to a zooming ... while the zoom+ or zoom- cursor was enabled. Less clicking=better ... -to-sprite or selection-to-udg feature? I've heard it ...
    Dunny Dunny November 2008 Development
  • A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…

    ... things up would be to change the code which calculates the ... E,D
    LD E,L

    POP BC ; ... result by 4
    LD L,A ;store the reult in ...

    ADD A,L
    LD L,A ; add the x ... /> LD H,E
    LD L,253
    OR A
    Digital Prawn Digital Prawn December 2008 Development
  • A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…

    ... />
    Use QAOP keys to change scroll direction of starfield.
    LD E,L

    POP BC ; ... by 4
    LD L,A ;store the reult in ... br />
    ADD A,L
    LD L,A ; add the x ... LD H,E
    LD L,253
    OR A
    Digital Prawn Digital Prawn December 2008 Development
  • 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 …

    ... in DE
    LD E,L

    MEASURE_FAIL
    ... HL,ENDCODE
    RES 0,L ; Align to an even ... LD A,H
    OR L
    JR NZ,ThisPassFailed ;Did ... LD H,E
    LD L,253
    OR A
    RET

    ;Change this to change attribute in use
    Digital Prawn Digital Prawn January 2009 Games
  • Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…

    ... a,(hl)
    inc l
    ld h,(hl)< ... br /> ld l,a
    ld (FXPointer), ... amp; 0xff
    ld l,a
    ld h,FXRout ... a,(hl)
    inc l
    ld h,(hl)< ... /> ld l,a
    ld (FXCode),hl ; change current beeper ...
    frobush frobush January 2009 Games
  • BASin Assembler suggestionsHi Dunny. According to your former request here goes a few suggestions. Been playing around with the Assembler and I'm glad I did. Quite nice indeed…

    ... a statusbar which tracks your cursor, might add columns. We'll ... editable, so I can't change the text colour easily. The ...
    Dunny Dunny January 2009 Emulators
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... in the program, you can change the function's return address ... return addr, fd now in l
    [/code]

    You ...
    Winston Winston January 2009 Development
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... said all these instructions wich change the SP value aren't ... registers

    LD A,L
    ADD A,5
    LD L,A ;next tree position
    Ralf Ralf January 2009 Development
  • Thinking in Assembly (first efforts)The following is one small routine to educate myself on a few concepts (jumps, flow control, routines, CPI): [code]searchmem xor a …

    I'd change this though:

    [quote]
    push hl
    pop bc
    [/quote]

    to this:

    [quote]
    ld b, h
    ld c, l
    [/quote]

    The former takes 22 T-states, the latter only 8.
    Winston Winston January 2009 Development
  • How does the Speccy deal with the Character Set?Hi All, Can anyone spare a little time to explain to me the basic Assembly method of how the Speccy interprets and retrieves Characters to print on …

    ... (if the character is an UDG then take the value found ... at 'UDG' instead)
    4 At ... print
    ;---------------------------------------------------------------
    LD L,A
    LD H,0 ...
    roko roko February 2009 Development
  • Fastest way to clear a screen.We haven't had an optimizing fun for some time, so let's have some: What's the fastest way to clear a screen (i.e., filling the 6912 bytes at 16384 w…

    ... SP,HL
    LD H,L
    LD B,6912/32 ... /> DJNZ LOOP
    [/CODE]
    Change 32 to whatever number suits ...
    evilpaul evilpaul February 2009 Development
  • Keys don't work even with new membrane, HELP!Hi folks. I have a 1983 48k Zx Spectrum. It powers up fine, but none of the keys respond. I have tried fitting a new keyboard membrane from rwap, but…

    ... should produce some digits eg. cursor keys. If the joystick works ... other defect. So don't change the Z80 (not yet anyway ...
    bladerunner bladerunner February 2009 Hardware
  • Computer Animated Racetrack SimulatorHello to you all, I am working on C-A-R-S, the Computer Animated Racetrack Simulator. You can make your own racetracks and later you can race aga…

    ... change directions.
    All other code is uncompressed. I might need UDG ...
    Dr BEEP Dr BEEP February 2009 Games
  • Who Are You Guys..... ???I'm curious to learn about the guys (and no doubt gals) who keep this forum alive. Were you all Spectrum-heads from the start? Did any of you come la…

    ... decided it was time to change and started rebuilding my collection ... Spectrum, just to make the cursor faster, and lots and lots ...
    zxbruno zxbruno March 2009 Games
  • Basin R15.5 is this a bughi Dunny don't know if this is supposed to happen but if I enter a line say 10 for f= 1 to 10 20 print f 3030 next f if I then move the curser to l…

    ... error is due to the UDG window not being wide enough ... one:
    Matrix2:
    Data.L 16,34,26,42,18 ... 36,28,44
    Data.L 58,00,50,08,60 ... 02,52,10
    Data.L 30,46,20,38,32 ... 48,22,40
    Data.L 54,12,62,04,56 ... 14,64,06
    Data.L 19,37,29,45,17 ...
    LCD LCD March 2009 Emulators
  • Their Finest Hour - manualHi all ! Any chances to see instructions for this game? 'Shorten' or full, in txt or jpg, pdf,...

    ... enemies. Estate preparation to change the direction of the interception ... Controlas the movement of the cursor by means of joystick ( ... the same position. The cursor movements are realised with joystick ... great scale when moving the cursor.

    5. THE ...
    Mevweb Mevweb April 2009 Games
  • Simple text compressionI just checked one idea about text compression. Do not take it as recomendation but rather as info which can you save some time when you are solving …

    ... /> LD A, H
    OR L
    RET Z



    LeafNodeFound:
    ; Save Cursor back to memory
    LD ... /> ; GotoString0
    ; ==============================================
    ; Sets the cursor back to the first character ...
    BloodBaz BloodBaz May 2009 Development
  • WoS RSS feedI've made an unofficial RSS feed for this 'ere site. Get all the "What's New?" news to your feed aggregator. Here it is, here: [url]http://feed43.c…

    here is my flavour, I tried to parse every entry, and tried to associate a proper link for every entry.

    If an entry does not have any link in it, it directs user to infoseek. if it has multiple links, it simply direct user to the last one in ...
    Arda Arda May 2009 Sinclair Miscellaneous
  • Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…

    ... : 0..7 ink colour to change to)
    8=[B]PAPER ... : 0..7 paper colour to change to)
    255=[B]STOP ... DRAW command) will move the cursor position relative to its current ...
    BloodBaz BloodBaz May 2009 Sinclair Basic
  • 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 …

    ... /> Why not russian language or Cursor joystick? Okay, I just joking ... /> If Multiload, allow disc syntax change.

    [QUOTE]
    (Intro ...
    LCD LCD May 2009 New game ideas
  • Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …

    ... />
    ; -----------------------------------------------------------------------------
    ; DATA

    ; udg data
    ; --------
    org 52224 ... 0
    ld l, a ; character to L
    add hl ... h
    ld l, a ; low byte to l

    ...
    chev chev May 2009 Development
<1…14151617181920…34>

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