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Search Again :: Adv Search 1000 results in 0.013s
<1…13141516171819…34>
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... even a single byte of RAM cannot be better than the ... coordinate storage, a 16-bit value can hold both X,Y ...
    mcleod_ideafix mcleod_ideafix February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... even a single byte of RAM cannot be better than the ... coordinate storage, a 16-bit value can hold both X,Y ...
    TVzombie TVzombie February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... even a single byte of RAM cannot be better than the ... coordinate storage, a 16-bit value can hold both X,Y ...
    Paddy Coleman Paddy Coleman February 2011 Sinclair Basic
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... attribute address are of same value, and that's all you ... bits of this byte select RAM bank). Now look at just ...
    TVzombie TVzombie February 2011 Sinclair Basic
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    ... incorrect and port FF return value FF as ZX128+2A. Keyboard ... M has 64 KiB of RAM, but apparently only 48 KiB ... of the Didaktik Gama's RAM must be usable, though.
    zub zub March 2011 Hardware
  • The most unique game loaderFor me it has to be Technician Ted, when the stripes give way to walking men and a timer.

    ... would be running in contended RAM and a couple of pokes ... all the data to 128 RAM then streaming in using the ... colour data with IN 255 value, so the stripes change colour ...
    nuggetreggae nuggetreggae April 2011 Games
  • I cant get this listing to run!Ive read this through so many times my eyes are misting up! [url]ftp://ftp.worldofspectrum.org/pub/sinclair/magazines/DUC/Issue08/Pages/DUC0800039.jp…

    ... the contents of the 6116 RAM.
    Anyway, all pointers now ... 32768 added to the real value. This seems to be forgotten ... found at that address. The value found points to 'Table #0A ...
    roko roko April 2011 Sinclair Basic
  • SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…

    ... second parameter is the note value. The following function is used ... (n) to the required note value:

    [code] 10 DEF ... take up 960 bytes of RAM, but since they are all ... . The noise frequency is a value from 0 to 31. The ...
    chev chev April 2011 Sinclair Basic
  • So what is the best Spectrum?I've had a search and even though i can remember a similar thread somewhere I'll twist it a bit. Whats the best "unmodified" Spectrum? (modification…

    ... #FF just returns the last value written to it on the ... not vaporware. Specifications was 256K RAM, Z80, network, Timex FDD connectivity ...
    chev chev May 2011 Sinclair Miscellaneous
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... is only performed on low value rows.

    Anyway, ... 't never reach a value greater than 17h during ... the last 256 bytes of RAM) are filled with 0 just ... a DRAM cell fades its value to "1" when refresh ... />
    The greater the value in B (after the XOR ...
    mcleod_ideafix mcleod_ideafix May 2011 Emulators
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... mean that the whole 48k ram area would be free for ... "modulecall" you put a 16bit value in HL and call "modulecall ...
    guesser guesser May 2011 Development
  • ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…

    ... 0.7.3 being that *unstable* ;) Specifically I didn't get ... or not there's enough RAM to dynamically load a GUI ...
    chev chev May 2011 Development
  • OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…

    ... /> As you suspected, more available RAM (useful for when you're ... the software to check the value of the system variable.
    chev chev May 2011 Sinclair Basic
  • RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…

    ... m seeing 7FFFh as SP value after a warm start, ... The I register keeps its value as well, but when ... this is executed, the value shown at SP may have ... true, that value will be the last value of DE register ... ROM but with the initial RAM value changed so this ROM ...
    mcleod_ideafix mcleod_ideafix June 2011 Emulators
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... mouse port must contain same value. (For example read stable values ... :
    - values on ports are unstable
    - low two bits of ...
    velesoft velesoft June 2011 Development
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... non-trivial application in 48k RAM is also difficult. You probably ... I am adding much of value. But I typed it up ...
    Alcoholics Anonymous Alcoholics Anonymous June 2011 Development
  • 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…

    ... into my emulated Speccy's RAM and run my application? If ... so, which RAM address should I load it ... t_states counter by an appropriate value after executing consecutive instructions and ...
    PeterP PeterP June 2011 Emulators
  • 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…

    ... into my emulated Speccy's RAM and run my application?[/QUOTE ... t_states counter by an appropriate value after executing consecutive instructions and ... significant byte for the new value of PC from the I ... need to take the new value of PC [i]from the ...
    ccowley ccowley June 2011 Emulators
  • 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…

    ... into my emulated Speccy's RAM and run my application? ... If so, which RAM address should I load it ... t_states counter by an appropriate value after executing consecutive instructions and ... algorithm to get equivalent attribute value for x,y positions ...
    Arjun Arjun June 2011 Emulators
  • Port 254 emulation problem. Help, please ...Sorry, but my english is not pepfect. I have a problem and need in professional help. I have developed hard-soft emulator of ZX Spectrum 48. The link…

    ... if the byte reads from RAM or ROM. Xh:Xl - program ... ror excess
    XON_RBBCP ; open RAM excess
    LD BUF,X ... (buffer register)
    XOFF ; close RAM interface
    RJMP COMDB ; go ...
    Vasil Vasil June 2011 Emulators
  • binutils questionSince there's a few people using binutils these days I thought I'd give it a go and see whether it solves my hunt for a replacement assembler/librari…

    ... mark out the lower 16K RAM, the screen area, and the ... code to work out the value and insert where needed:
    csmith csmith June 2011 Development
  • Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…

    ... me a lot of "Expected value but got ___ instead" where ... 2011
    ; **********************

    ; **********************
    ; Ram Variables
    ; **********************
    ballpos equ ...
    ooze48k ooze48k July 2011 Development
  • Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…

    ... ]
    Expected A but got value *0006
    [/quote]

    ; **********************

    ; **********************
    ; Ram Variables
    ; **********************
    ballpos equ ...
    ooze48k ooze48k July 2011 Development
  • I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…

    ... x Card Reader + 2 x RAM + 1 x DVD + 1 x ... without making the whole machine unstable.

    Therefore logically the ...
    ADJB ADJB July 2011 Chit chat
  • 128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…

    ... anything that uses it. The value written is the floating bus ... value, which means that unless you' ... in page ROM 1 and RAM 7, setting the shadow screen ...
    Philip Kendall Philip Kendall July 2011 Hardware
  • Fuse: what do you want to see?An open brainstorm. If you had a team of programmers working on [url=http://fuse-emulator.sf.net/]Fuse[/url], what would you tell them to work on? …

    ... system variables with a random value before LOADing a game, as ... state of the Spectrum's RAM + registers +whatever to the PC ... 's RAM every half-second or so ...
    ewgf ewgf July 2011 Emulators
<1…13141516171819…34>

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