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<1…28293031323334>
  • Selling my Spectrum Development BooksDue to unforseen circumstances, I am having to sell lots of items, including my collection of machine code development books. All the links are here…

    ... ]

    It's "Rodn[b]a[/b]y", you plonker! :p :D
    robert@fm robert@fm July 2006 Sales
  • Calling ROM routinesFirstly, sorry if this is the wrong forum to post this in, but I wasn?t quite sure under which heading is best fitted. I?m trying to figure out how…

    ... "Rubber Numbers in the Spectrum ROM" - a very helpful article.
    Incidentally ... , 81, 100
    Use a larger loop and there are ... like

    LD A,64
    CALL $2D28 ; STACK ... -A
    RST 28H ; enter ...
    Geoff Geoff July 2006 Development
  • a question about isometric gamesHello I have a doubt... in the isometric games(Batman, Head Over Heels,...)the view is over 45? or 120? ? thanks.

    ... usually rendered at a screen angle corresponding to a 0.5 slope ... .....o.....oo......
    ....A...oo...o...oo....B...
    ..........oo.o. ... screen angle between lines A and B is about 53,2 ... degree angles (therefore the screen (A,B) angle would have been 90 ...
    GOC GOC July 2006 Games
  • 80's music videos[url]http://www.1500videos.com[/url] Anyone know how to download these into local files?

    ... for this as it was a b-side. I remember at school ... friend brought this single into a music lesson, as the teacher ... the whole thing through on a really loud volume!
    Daren Daren July 2006 Chit chat
  • 80's music videos[url]http://www.1500videos.com[/url] Anyone know how to download these into local files?

    ... for this as it was a b-side. I remember at school ... friend brought this single into a music lesson, as the teacher ... the whole thing through on a really loud volume![/QUOTE]
    a vid for it too, just ...
    mel the bell mel the bell July 2006 Chit chat
  • A very first computer, a very first gameMaybe i'm duplicating some other posts, but... what was your first computer and game??? For me it was a rubber zx-spectrum 48k and tape with only t…

    ... my hands on was a [B]48k rubber keys[/B] (hail the king ... [/B] and [B]Pheenix[/B], but when i played some 128k games on a ... it was time to get a [B]+2[/B] myself. (another reason: the ... in a cheap pack featuring [B]Green Beret, Hypersports, Ping Pong [/B]and [B ...
    Emlyn_Hughes Emlyn_Hughes July 2006 Games
  • AgentX2 RemixingI`ve started to remix AgentX2 and need some help with the drums. Anyone care to add the drum track to [url=http://www.franksmusic.homecall.co.uk/spe…

    ... got,

    10 LET a$="O3(g&G& ... ;f&)"
    20 LET b$="O5(N3&&DD ... ;&#aa&&C#a&&#aa)"
    30 ... ;&gf)"
    40 PLAY a$,b$,c$
    (The D D ... played with a# C)?
    [QUOTE=aowen]Is ...
    FrankT FrankT July 2006 Sinclair Miscellaneous
  • Timex-Sinclair 2068 mod?Just curious, is there any way that a Timex-Sinclair 2068 can be modded to function as a ZX Spectrum128? I'm considering getting one (since it's rat…

    ... ]Thing is, how complex is a ROM mod?[/QUOTE]

    ( ... -- the TS2068's HOME rom is socketted, which means you ... it out and insert a 16kx8 rom containing a spectrum rom. A very minor mod ... />
    Rather than using a sinclair rom as image it might be ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Hardware
  • Who do you listen to most?Without wanting too many people replying `the wife`, what music do you usually gravitate towards? I listen mostly to the Chilli Peppers, System of a…

    ... [/B][/FONT][FONT=Lucida Console][B]you usually gravitate towards?[/B][/ ... the Chilli Peppers, System of a [/B][/FONT]
    [FONT=Lucida ... please), Radiohead and any [/B][/FONT]
    [FONT=Lucida ... of new bands :)[/B][/FONT]
    [B][FONT=Lucida Console][/FONT ...
    CP/M User CP/M User July 2006 Chit chat
  • ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…

    ... personally I think it's a [b]very[/b] bad idea. Filenames ... names, not content. Users [b]do[/b] rename files, and the ... here: there's a mismatch between a disk filesystem (which ... is fundamentally unordered) and a tape filesystem (which is fundamentally ...
    Philip Kendall Philip Kendall July 2006 Emulators
  • Embarassing tune you really likeIs there one song you really really like but its by a band/singer who you are embarassed by ? Eg you would listen to it on headphones but you woul…

    ... really like but its by a [/B][/FONT]
    [FONT=Lucida Console ... who you are embarassed by ? [/B][/FONT]

    [FONT= ... on headphones but you would [/B][/FONT]
    [FONT=Lucida ... it on loud speaker ?[/B][/FONT]
    [B][FONT=Lucida Console][/FONT ...
    CP/M User CP/M User July 2006 Chit chat
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... been years since I did a conversion, I hardly ever made ... be honest, it sounds like a complicated project. Consider the options ... drives (i.e. drive A & B, both with low capacity drives ... . I'd have to write a compressor and so on...
    Jmk Jmk July 2006 Games
  • Prince of Persia in an actual Spectrum?Prince of Persia is one the best games programmed for our Speccy in the last 10 years, but I think originally was written for TR Dos, although there …

    ... been years since I did a conversion, I hardly ever made ... be honest, it sounds like a complicated project. Consider the options ... drives (i.e. drive A & B, both with low capacity drives ... . I'd have to write a compressor and so on...
    nekdo123 nekdo123 July 2006 Games
  • ZX Game Book UpdateHi all... For various unrelated reasons the time I have for editing has been limited to weekends, but I'm still plugging away. I have created 'fi…

    ... be: "which had to [B]be[/B] coerced"

    ... Again, a mixture of tenses - maybe "and then [B]used[/B] the ... miner to avoid rocks", "provided [B]a[/B] method"? Maybe?

    B]by[/B] Melbourne House"

    TranzAm: "a distance of ...
    mattrudge mattrudge July 2006 Sinclair Miscellaneous
  • Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…

    ... /> ld l,Y
    ld a,(hl) ; of course, it's ... a good idea based on equation: a * b = exp(log(a) + log(b)). We need a ... different logarithm tables: a * sin(b) = exp(log(a) + log(sin(b))).

    a look at the "fillrate-intensive ...
    baze baze July 2006 Development
  • Self Relocating CodeOn page 47 of [url]http://www.tim-mann.org/trs80/doc/ldosq1-3.txt[/url] is an article about relocating code. The documented routine that performs the…

    ... br /> LOOP LD A,C
    ADD A,(HL)
    LD ... INC HL
    ADD A,B
    ADC A,(HL)
    LD (HL ... DE
    LD A,(DE)
    DEC A ; val of 1 ... JR Z,ENDC
    ADD A,L
    JR NC,NOCAR ... of first address to relocation, a byte. It is followed ...
    piters piters August 2006 Development
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... wondering if I could request a feature in the debugger.
    a,b,c,d,e,f,h ...
    Kiwi Kiwi August 2006 Emulators
  • Game: the GEM machineHi all, I'm moving this game discussion from the Wanted: Game Ideas! thread to here, so we can concentrate on just the game. Any comments/suggestio…

    ...

    A B C

    A is higlighted I want ... to swap B & C ... naturally found myself clicking on B which I wanted to ... would then swap with A setting of a reaction that I ... destination then click on B to send it to ...
    chop983 chop983 August 2006 Development
  • ZX Game Book UpdateHi all... For various unrelated reasons the time I have for editing has been limited to weekends, but I'm still plugging away. I have created 'fi…

    ... Rare" - should be "series of [B]games[/B]"

    Rex: " ... the enemies remained a formidable foe" - this ... Chase HQ: "a police officer in [B]a[/B] pursuit of a bunch of nefarious ... taking out the bold "a" above and changing this ...
    mattrudge mattrudge August 2006 Sinclair Miscellaneous
  • Old trademark dispute !Funny as hell (someone posted this on Retro Gamer)..... [url]http://www.cpczone.net/boards/viewtopic.php?t=841&postdays=0&postorder=asc&start=0[/url…

    ... just some troll or a genuine a**hole, by next week ... one's impressions as a [b]visitor[/b]. And the stories I ... harrassment just because they made a lewd remark or something... ... we will come to a point where you get ... place worth living in is a cave. At least you ...
    GOC GOC August 2006 Chit chat
  • Portugese SpectrumI've just acquired a Speccy 48K which states "made in Portugal" on the back. I thought Portugese "Spectrums" were actually some illegal copy of a Tim…

    ... [/B]) became the [B]CZSpectrum[/B], which has a [B]ZXSpectrum+[/B] look. They also feature a [B ... ]Reset Button[/B], [B ...
    Marcelo Marcelo August 2006 Hardware
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ...
    LP1: LD A, (DE)
    LD L, A
    INC (HL ...
    DEC BC
    LD A, B
    OR C
    JR ...
    icabod icabod August 2006 Development
  • Additional 3.5" Drive for the +3Hi. I've been thinking of various ways of getting data off of my 3" discs onto a PC and have a couple ideas, one of which is to get some +3e proms bl…

    I picked up a PCW 3"->3.5" ... eBay, and used that for a painless +3 drive conversion. So ... />
    Rather than bother with a B: drive I just replaced the ... my PC. I thought having a B: was only good for data ... was easier to pick up a second +3 machine so I ...
    obo obo August 2006 Hardware
  • What`s ya YouTube reccomendation today?I`ll go with:- [url]http://www.youtube.com/watch?v=61R0LO9Sa0k&mode=related&search=[/url] I was gonna go for Natalie Imbruglia - Torn, just cos I s…

    Thom Yorke has a solo album out called 'The ... good tracks. Sounds a bit like Kid A b-sides to me. Lots ... month and are currently recording a new album which will be ...
    misguided_fool misguided_fool August 2006 Chit chat
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ... -efficient: only uses a, i, j and a temporary variable for swapping ... /> Technically you don't need a temporary variable [I]if[/I ... number / 2.
    [CODE]a = a + b
    b = a - b
    a = b - a[/CODE]
    Of course ...
    icabod icabod August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    [QUOTE=icabod]
    Of course that doesn't quite work in z80 asm, but I like to be picky. Hoorah![/QUOTE]

    Easily fixed:
    [CODE]a = a XOR b
    b = a XOR b
    a = b XOR a[/CODE]
    AndyC AndyC August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    Now do it in Z80 with only using regs a & b ;)
    Kiwi Kiwi August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    ... />
    swap: ld a, b ; put 1st value into a
    xor c ... with 2nd value
    ld b, a ; put merged result in ... into 2nd value
    ld a, b ; get merged 1st/2nd ... remove 1st value
    ld b, a ; now have 2nd value in ...
    Kiwi Kiwi August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    Sadly, no XOR version is shorter than simple: ld c,a; ld a,b; ld b,c :)
    baze baze August 2006 Development
  • In Machine Code, what is the quickest way to sort bytes?I am playing around with some ordering of sprites, where I want to order them by vertical position. I used some Rodnay Zaks code to order some bytes…

    [QUOTE=baze]Sadly, no XOR version is shorter than simple: ld c,a; ld a,b; ld b,c :)[/QUOTE]
    hehe, so true!
    And that ladies and gents bring us full circle back to the start. :)
    Kiwi Kiwi August 2006 Development
<1…28293031323334>

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