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Search Again :: Adv Search 1000 results in 0.022s
<1…16171819202122…34>
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... ; -----------------------------------------------------------------------------

    ; THE 'SCROLL BUFFER' SUBROUTINE
    org 0x2571
    jr s_scrn_lp ; back around

    ... br /> jp s_loop_1 ; jump back

    org ...
    chev chev October 2013 Development
  • IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…

    ... The caller passes a buffer pre-loaded with the first ... /> directory entries.

    Buffer format:

    Entry 0 ... )
    DE = Address of buffer (first entry initialised)
    HL ... = Number of completed entries in buffer, 0...n.
    (If ...
    The_Bert The_Bert October 2013 Sinclair Basic
  • Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…

    ... tried reproducing it with various back-copies of the code I ... up memory for the colour buffer.
    joefish joefish October 2013 Development
  • NEW GAME: Elixir VitaeOnly 2 weeks after Janosik I have a pleasure to announce my next creation - a logical minigame called [B]Elixir Vitae[/B]. Just like another Polish …

    ... /POP colour routine from a buffer. Then you could write simple ... - for other rows, divert painting back to the top row of ...
    joefish joefish October 2013 Brand new software
  • NEW GAME: Elixir VitaeOnly 2 weeks after Janosik I have a pleasure to announce my next creation - a logical minigame called [B]Elixir Vitae[/B]. Just like another Polish …

    ... - for other rows, divert painting back to the top row of ... definition without even using a buffer.

    If I had ...
    Einar Saukas Einar Saukas October 2013 Brand new software
  • Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…

    ... is to make a shadow buffer of the attributes. So ... screen relates to a shadow buffer location and when you ... you set the shadow buffer locations to non-zero.< ... shape locations in the shadow buffer are clear draw the ... shape
    5. Loop back to 2 for each shape ...
    David Jones David Jones October 2013 Development
  • Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…

    ... is to make a shadow buffer of the attributes. So ... screen relates to a shadow buffer location and when you ... you set the shadow buffer locations to non-zero.< ... shape locations in the shadow buffer are clear draw the ... shape
    5. Loop back to 2 for each shape ...
    Morkin Morkin October 2013 Development
  • Addresses in Fuse debuggerFrom Fuse man page: [I]Addresses can be specified in one of two forms: either an absolute addresses, specified by an integer in the range 0x0000 t…

    ... />
    A machine state ring buffer would be nice too, so ... event happens, you can trace back N entries (cpu register snapshots ... that point, i.e. "roll back in time".
    u6c87 u6c87 November 2013 Emulators
  • idea: new gaming interface for ZX Spectrum (48k)First of all, I am not an expert this is just an idea of what I would like to see happening in the modern era of the ZX Spectrum. A compact, small, …

    ... outputs, and then return them back to high impedance state before ... adding port decoding and a buffer in external logic, you may ...
    Winston Winston November 2013 Hardware
  • bit manipulation conundrumWhat's a neat way to change this bit pattern in registers BCDE: [code]Loop0: ;change B:00000000 C:abcdefgh D:ijklmnop E:qrstuvwx[/code] to this bit …

    ...

    ; store in source buffer for more consistent access across ... MainLoop

    ; read results back into registers
    ld hl ...
    David Jones David Jones November 2013 Development
  • +2A/+3 composite modHi, Anyone has experience doing a composite output mod for +2A/+3? (yes.. I also have a working RGB) A while ago I did one based on the instruction…

    ... the luminance output is fed back into the TEA2000 chip, where ... , I copied the normal composite buffer - three diodes, 2K2 resistor, transistor ... was actually too dark. Looking back at my measurements of the ...
    rga24 rga24 December 2013 Hardware
  • Pseudo-3D map renderingHave been mulling this over for a while, until that isometric thread prompted me to ask. I'm not sure if this is officially classed as 2D, 2.5D, or 3…

    ... top down, from a 768byte buffer, 1 byte per square on ... , adding sprite and writing it back to the screen as it ...
    MatGubbins MatGubbins January 2014 Development
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... they used to do it 'back in the day'.

    buffer chip. These are available as ...
    1024MAK 1024MAK January 2014 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... the operated switches simply came back high? (Which may explain why ... trick in using the same buffer chip to do the read ...
    joefish joefish January 2014 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... the tri-state line driver / buffer chips are available as non ... the operated switches simply came back high? (Which may explain why ... trick in using the same buffer chip to do the read ... a tri-state line driver / buffer chip with two output enable ...
    1024MAK 1024MAK January 2014 Hardware
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... LD H,A ;back to tile buffer
    LD A,( ... as atribute buffer
    ;easy calculation: tile buffer starts ... /> SUB 156 ;back to tile nr buffer
    LD ... change copy single tile to buffer code
    ;jumps here ... LD H,A ;back to tile nr buffer
    JP ...
    Ralf Ralf January 2014 Games
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... bytes to the designated destination buffer (i.e. somewhere in "user ... you otherwise have to waste buffer space on the speccy by ... the bytes to a buffer somewhere then going back and running your ... by cutting out an intermediate buffer I was using and making ...
    guesser guesser February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ...
    ; de = void *buffer
    ; bc = uint buffer_len ... ; bc = remaining space in buffer

    ; consume ... jp __stdio_scanf_sm_write ; write '0' to buffer

    state_2:
    back and redo the ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Hardware
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... ;original code, start of sprite buffer)
    ;(numbers of sprite ... AF'
    SUB 156 ;back to tile buffer
    LD H,A ... /> LD H,A ;back to tile nr buffer
    JP 34795< ... 63908
    ;insert filling the buffer with empty tiles before ;extracting ...
    Ralf Ralf February 2014 Games
  • Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …

    ...
    di
    ld sp, buffer
    pop af
    pop ... /> I did it slightly differently back in the day, but the ...
    m1k3yboi m1k3yboi February 2014 Development
  • Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …

    ... for hack code and attribute buffer

    -on 128 kB ... the game and write them back in. I thought about it ...
    Ralf Ralf March 2014 Games
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... working on adding a fifo buffer for the display writes from ... the spectrum will be held back until the next frame has ... I can use the buffer to hold back a write to screen ...
    Basher Basher March 2014 Hardware
  • TXT2EMU enhancementI was looking at the encodings supported by BAS2TAP for entering graphics, print controls, etc. as plain text. Basically, there's only one needed, be…

    ... RAMRST to redirect any errors back into TXT2Emu so that I ... line into the 128 editor buffer to be corrected, but it ... an error it should come back into my code via (ERR_SP ...
    Battle Bunny Battle Bunny March 2014 Sinclair Basic
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ...
    1. plug buffer: this instruction plugs the output ... can be held back in the buffer and the attribute ... #BB7 Plug buffer
    #22E5 Plug buffer
    #BFA Bypass buffer
    ... br /> #7760 Plug buffer
    #71F1 Bypass buffer
    #720D Unblock ...
    Basher Basher April 2014 Hardware
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... space, and when they read back from the upper half they ... handful of bytes in a buffer would do. Though I think ...
    joefish joefish April 2014 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... circuit under the chip loop back on itself, and the only ... uses that to trigger the buffer chip that lets the joystick ...
    joefish joefish April 2014 Hardware
  • Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…

    ... circuit under the chip loop back on itself, and the only ... uses that to trigger the buffer chip that lets the joystick ...
    1024MAK 1024MAK April 2014 Hardware
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    So, your screen buffer is in linear order instead ... , to fetch the stack pointer back from wherever you stored it ... /> Also, don't forget this buffer screen can be bigger than ...
    joefish joefish April 2014 Development
  • Double-Buffer ScreenFor my Alien Breed Speccy re-write I decided to use a Double Buffer (DB) or 'Back Screen' to draw all the game action onto, before shuffling the whol…

    ... =joefish;765476]So, your screen buffer is in linear order instead ... jog even when constantly dropping back into BASIC before the next ...
    LuMan LuMan April 2014 Development
  • Issue 4S bad M1Never ever seen a 4S with a bad M1 line before today [url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img…

    ... it, so I sent it back to him.

    The ... days.
    Maybe we should buffer the M1 on new interfaces ...
    bverstee bverstee May 2014 Hardware
<1…16171819202122…34>

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