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<1…19202122232425…34>
  • Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?

    ... for an XY of 0...255, even though the Y shouldn ...
    icabod icabod December 2005 Development
  • Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?

    ... for a potential XY of (255,255), the quickest way of working ...
    icabod icabod December 2005 Development
  • Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?

    ... ,0) for y in 0...255,
    followed by high bytes ... ,0) for y in 0...255
    [/code]
    EDIT: lookup ...
    gasman gasman December 2005 Development
  • Nintendo DS and Wanadoo wireless ISPI want to get my Nintendo DS online using my Wanadoo ISP broadband which uses wireless. I've read that it's possible, but the Wanadoo website doesn't…

    ... .x.xxx
    subnet mask: 255.255.255.0
    Gateway: xxx.xxx ...
    zeropolis79 zeropolis79 December 2005 Sinclair Miscellaneous
  • What's the RAND USR code for the test screen?And what versions of hardware does it work on? Ta!

    try POKE 23606,8 (or any number between 8 and 255) then type something .. wacky stuff
    Glue Glue January 2006 Sinclair Basic
  • Platform Games Designer 2??Platform games designer has got to be the best program of it's kind out there. So addictive it's untrue! So now I find myself asking, are there any …

    I absolutely love PGD but would like some of ...
    Skarpo Skarpo January 2006 Sinclair Miscellaneous
  • Machine Code: quicksort optimisationI came across this z80 quicksort implementation when going through the wikipedia article on the same. It's 44 bytes long. I was wondering if any of …

    ... sorting bytes with values 0-255 to boot, the number of ...
    Alcoholics Anonymous Alcoholics Anonymous January 2006 Development
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... have the value 191 or 255 when no key is pressed ... /> 10 FOR T = 0 TO 255
    20 OUT T,T ...
    Dr BEEP Dr BEEP January 2006 Sinclair Basic
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    Is there a reason why a value of 2 is used? I'd have thought maybe 255 would have been better...
    Gwyn Gwyn February 2006 Sinclair Miscellaneous
  • What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…

    ... ? I'd have thought maybe 255 would have been better...
    Geoff Geoff February 2006 Sinclair Miscellaneous
  • Beginner InfoI have trying to find some hardware information for use with assembly coding but havn't had much luck. For instance. How do I redirect the vertical …

    ... bits, a floating bus means 255 is sitting on the data ... occurs, the z80 reads a 255 peripheral identifier. In IM2 mode ... the word at address (I+255),(I+256) to be read ... possible peripheral id bytes 0-255, the word read (and jumped ...
    Alcoholics Anonymous Alcoholics Anonymous February 2006 Development
  • Method to read byte as binary string rather than dec?Hi all Am fiddling around with the screen buffer and have written a routine to scan the screenbuffer into upper ram and then write it back in upside…

    ... by subtracting variable z from 255
    Update your listing with ... this: 111 LET z=255-z

    But this ...
    miskox miskox February 2006 Sinclair Basic
  • Method to read byte as binary string rather than dec?Hi all Am fiddling around with the screen buffer and have written a routine to scan the screenbuffer into upper ram and then write it back in upside…

    ... by subtracting variable z from 255
    Update your listing with ... this: 111 LET z=255-z[/quote]
    Nice try ...
    Paul van der Laan Paul van der Laan February 2006 Sinclair Basic
  • Screen DisolveHas anyone got any good assembly code to dissolve the screen I could see

    ... DE,16385
    LD (HL),255
    LD BC,6143
    robpearmain robpearmain February 2006 Development
  • Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …

    ... ' by the ULA will be 255. Then the address of the ... routine will be at IM2table+255 (LSB, MSB follows in next ...
    Alcoholics Anonymous Alcoholics Anonymous March 2006 Sinclair Basic
  • Assistance with IM2 routineI subsequently got a working IM2 routine.

    ... /> If I do an IN 255 from BASIC while the IM2 ...
    Alcoholics Anonymous Alcoholics Anonymous March 2006 Development
  • How can I tell if 128k in codeIs there an easy way in code to check if the Spectrum has 128k, rather than 48k so I can display a message "Must have 128k" etc

    ...
    halt
    ld a, 255
    lp: inc bc
    icabod icabod March 2006 Development
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... /> Example
    10 LET A=255-IN 65022
    20 PRINT ...
    Blondin235 Blondin235 March 2006 Sinclair Basic
  • TommyGun 0.8.5 available0.8.5 has been uploaded release updates include: * Heaps of bug fixes :) * A getting start guide on how to use TG Please try it and give me your f…

    ... ,128 128,128,128 and 255,255,128.

    Also I ...
    Wolverine Wolverine March 2006 Development
  • Here to go!Welcome to the new look! This migration took [B]a lot[/B] longer than expected (2 hours on the test setup, 5 hours on WoS), but everything ought to b…

    ... colour
    (white in rgb=255,255,255 [url=http://art.speccy.cz ... .jpg]wos background=241,240,255[/url])

    [url=http ...
    de Vandemar Croup de Vandemar Croup April 2006 Sinclair Miscellaneous
  • Here to go!Welcome to the new look! This migration took [B]a lot[/B] longer than expected (2 hours on the test setup, 5 hours on WoS), but everything ought to b…

    ... colour
    (white in rgb=255,255,255 [URL="http://art.speccy.cz ... .jpg"]wos background=241,240,255[/URL])
    [/quote]

    That's actually [240, 240, 255] (0xF0F0FF) as you can simply ...
    mheide mheide April 2006 Sinclair Miscellaneous
  • how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…

    ... arguments are numbers from 0..255 or 0..65535, would be ...
    icabod icabod April 2006 Development
  • z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…

    ... 256 unique with codes 0-255).

    There are 33 ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • New - BASin r13a is available for downloadHi all, Here's the latest BASin. Mostly just bugfixes, but also now has the upgraded UDG editor which can now edit multiple UDGs on one editing gri…

    ... you to edit up to 255 "characters" (or sprites) which you ...
    Dunny Dunny April 2006 Emulators
  • z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…

    ... plane (a number from 0-255 that determines which sprite lies ... to its plane positon (0-255). A "struct sp1_ss" describes the ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…

    ... 16384 solid black (255) - like mimicking POKE 16384, 255. It assembled without ...
    48K 48K April 2006 Development
  • Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…

    ...

    a1 ld a,255
    ld b,a

    loop ld a,255
    ld b,a
    48K 48K April 2006 Development
  • New - BASin r13a is available for downloadHi all, Here's the latest BASin. Mostly just bugfixes, but also now has the upgraded UDG editor which can now edit multiple UDGs on one editing gri…

    ... you to edit up to 255 "characters" (or sprites) which you ... 's or even more than 255 characters. It just makes it ...
    Kiwi Kiwi April 2006 Emulators
<1…19202122232425…34>

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