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<1…17181920212223…34>
  • Folks with real speccies - test this!A lad from another forum has written a music demo for the Speccy, but he can only test it on ZXSpin, so needs some helpful chaps to record this to ta…

    ... Speccy, but he can only test it on ZXSpin, so needs ...
    Dunny Dunny February 2013 Sinclair Miscellaneous
  • Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…

    ... call the DOS SET 1346 routine. The problem is that I ... where to start from, except that simply calling the routine with RANDOMIZE ...
    Alessandro Grussu Alessandro Grussu February 2013 Sinclair Basic
  • Timing in loading routinesJust for curiosity I have done some experiments with SAVE command in accurate emulators, and then analyzing the generated WAV and I have obtained lit…

    ... the rest of the SAVE routine. The OUT instruction is 16x ... pulses I have no applied test, but can be 668 instead ...
    antoniovillena antoniovillena February 2013 Development
  • How to benchmark a single routine?I've written a routine. It works. But it was never meant to be the final version. So I rewrote it. The new routine works too. Yay. :) However, I'd …

    I've written a routine. It works. But it was ... I rewrote it. The new routine works too. Yay. :)

    Sokurah Sokurah February 2013 Development
  • Accidental rainbow effects.. How do I adapt?I've somehow bizzarrely created a rainbow text effect on my title screen by accident. The title was just supposed to flash different colours whilst …

    ... of the IN command the routine produces some attractive results...
    and 1
    jr z, start
    call flash
    jp ...
    start ret ;return
    flash LD A, R ;flash routine
    daveysludge daveysludge February 2013 Development
  • DIVIDE versus ZX128 ROMDivide interface use hardware mapping of extra memory on this fixed points in 48rom: #0000 - power-on/reset/rst0/software restart #0008 - syntax erro…

    ...
    #0066 - nmi routine
    #04C6 - tape save routine
    #0562 - tape ... load and verify routine
    #3D00 to #3DFF - tr ... reset/power-on and ZX start in USR0 mode (48basic with ...
    velesoft velesoft February 2013 Development
  • Fastest redraw of screen from UDGsHere's a question for everyone, to generate a bit of code to be used in games: On a standard 48K Spectrum, what's the fastest way to redraw the scre…

    ... attributes and any character maps start on word boundaries.

    test whether this improves rendering performance ...
    joefish joefish March 2013 Development
  • Commando Start Address?Hello, Since few month i becomes really interested with the speccy where i discovered very good game. And i decided to analyze code of some existi…

    ... what is the Game 's Start Adress?

    Does somebody ...
    youki youki March 2013 Development
  • Circumspect - A Spectrum Emulator for learningThis is a project that I have been playing around with for a while. It must be said, I tend to have problems getting things finished where hobbies a…

    ... emulators, and then made a start with getting the video working ... z80, writing a debugger and test suite, and then the keyboard ...
    ramsrc ramsrc April 2013 Emulators
  • Help reviving a 128 +2 GreyHello m8s, my turn to ask for some help with a +2 Grey. Got it for spares as I do have a working one but I could not resist to try and fix it. As us…

    ... tester loader with Paul farrow test program and gave me fault ... , still the same. Then I start measuring voltages at the ram ... same error on Paul's test and stil 0v on pin ...
    Pluto63 Pluto63 April 2013 Hardware
  • another faulty zx spectrum +2 to fix!!!Hello to all, I'm new here... I have got a faulty +2 (gray) and start to try fix it... I have read the treads of xaris_sm and Pluto63 as background…

    ... a faulty +2 (gray) and start to try fix it...
    test with the "RAM test ROM"...

    emilen72 emilen72 April 2013 Hardware
  • Arcade Game Designer 4Just released over at the AGD forums. New this time: Sprites can now be individually coloured using the SPRITEINK command. If 16x16 sprites aren't…

    ... disable AY sound or the routine which sorts the sprites which ... it with 3.5 or start afresh with 4.0. Secondly ...
    jonathan jonathan May 2013 Brand new software
  • Speccy collection prepping for sale - Pics includedHi guys, I made a post a while back about having to shift my sizeable collection due to incoming sprog. I gave up typing up the names, so I'm going…

    ... , so I'm going to start posting up pictures of 'em ... /> Target Renedage
    Terminus
    Test Match + One Day Cricket
    Kilmannan Kilmannan May 2013 Sales
  • What's the POKE that removes the Start Tape message when saving?I'm sure there is one... you could POKE one of the system variables and when you SAVEd it would do it without the pause and the Start Tape message. …

    ... without the pause and the Start Tape message.

    Yes ...
    leespoons leespoons May 2013 Sinclair Miscellaneous
  • How to test Z80 Code?Hi All, Is there a way to test a block of z80 code (nothing speccy specific in it) with many different inputs? The reason I ask is that I'm writing…

    ... /> Is there a way to test a block of z80 code ...
    Shando Shando May 2013 Development
  • UPS power supply noise (odd one)I've got an APC Smart-UPS 700 Had it for about three years no problems with it at all. It was 'used' when I got it. Yesterday I powered it down fo…

    ... that pitch!) it did not start doing this for a good ... it was fine. Battery passes test and I see no other ...
    spider spider June 2013 Chit chat
  • Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…

    ... 'm trying to write a routine that plots 3 pixels to ... /> call $22E5 ;call ROM plot routine
    pop bc
    inc ...
    daveysludge daveysludge July 2013 Development
  • Sampling routineLooking for a simple yet crude sampling routine that I can use on a forthcoming game. I've tried most of the ones from the archive and find them uns…

    ... a simple yet crude sampling routine that I can use on ... spare and just need a routine that goes "YEAH!"

    daveysludge daveysludge July 2013 Development
  • Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…

    ... equ $19c


    start
    ld (levid+1), a ... /> Also I have a LDIR routine at 48641 which backups some ... 6, copy the disk loading routine to 23900, jumps to it ...
    BCH BCH July 2013 Games
  • 20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…

    ... each successive line. If we start the first line at the ... attempt at a 20-column routine last night - churning through the ...
    gasman gasman July 2013 Development
  • Redefine keys routineHow would I go about making a memory efficient redefine keys routine? I only want to define up, down, left and right and reserve key 'H' for pause.…

    ... a memory efficient redefine keys routine?

    I only want ... .

    The key scan routine in the game goes something ...
    daveysludge daveysludge August 2013 Development
  • BIFROST* example: "Knights & Demons DX" source codeA package containing the source files of our multicolor game "Knights & Demons DX" is now available for download [URL="http://www.mediafire.com/?hbch…

    ... difficulty level):

    [CODE]'Start war
    200 LET balance ... knight or demon), and finally start BIFROST* to show everything:
    start another battle:

    [ ... this is just a simple routine called to pause at the ...
    Einar Saukas Einar Saukas August 2013 Development
  • Rubber Key RAM - Repair?Hello there everyone! I'm a long-time lurker on here - ROMs, documentation etc. but yesterday I finally ponied up for my own speccy, just like the on…

    ... /> I carried out the RAM test I found elsewhere on this ... the process where my eyes start to spin and I feel ...
    KenDoddsDad KenDoddsDad August 2013 Hardware
  • Barn Find #1Hi, just back from holiday and found a load of spectrum related bits in my folks old barn. They would probably have been a mates who dumped a load of…

    ... give me pointers where to start I'd be grateful.
    test them.

    Other than ...
    rune rune August 2013 Hardware
  • Strange cures for a ZX Spectrum +2I have been looking for a +2 now for more than 2 years since I started collecting and restoring Spectrums again. I won a few on eBay, but was unsucce…

    ... the Springboks playing a rugby test against Argentina, the Manchester United ... did not know where to start with the diagnostics as I ... 16/48 boards. As a start I took all the socketed ... and keyboard. I must still test the tape drive and load ...
    Pierre Pierre August 2013 Hardware
  • Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…

    ... the in-game controls. To test my hypothesis, I put a ... /> So, here's a suitable routine for detecting a press/release ... />
    So, we have a routine implementing the pause function; where ... the breakpoint, assemble the keyboard routine and load it into memory ...
    stephenw32768 stephenw32768 August 2013 Games
  • MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…

    ... and from address #2249 is routine for read MGT MOUSE ports ... :
    [CODE]THE 'MOUSE' ROUTINE
    This routine is also present in ... NZ Return to vertical movement test.
    2265 BIT 1,D ...
    velesoft velesoft August 2013 Hardware
  • Possible dodgy +2 - resets when loadingSo I have a grey model +2 with a recently refurbed tape deck (new belts and cleaned heads). It might be a product of bad loading, but from what I ca…

    ... ? I suspect there are memory test programs I can use, but ... wouldn't know where to start!

    Thanks in advance ...
    blueowl0708 blueowl0708 August 2013 Hardware
  • MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…

    Having problems with this routine to print large on the ... attributes
    ld hl,72 ;start of address to poke
    call print ;call print routine
    pop bc
    pop ...
    daveysludge daveysludge September 2013 Development
  • Upper RAM replacement module issues with the DivideI got my new upper ram replacement module from Zorn yesterday and seem to be having some issues. When the machine is without the Divide it boots up …

    ... on it (original divide), issues start to appear.

    Some ... , the ram passes the memory test i perform with the TESTPROG ...
    gtsamour gtsamour September 2013 Hardware
<1…17181920212223…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
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    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
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  • +3 Disk drive motor
    AndyC on April 21
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    mel the bell on April 20

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