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<1…891011121314…34>
  • A new maze game: "Deadly Labyrinth of Lord Xyrx"DOWNLOAD: [url]http://hooyprogram.republika.pl/xyrx.zip[/url] Here is the YouTube video to let You guys know how to go through some levels: [url]htt…

    ... YERZMYEY
    Interrups engine by GASMAN
    Moral support by R ...
    Yerzmyey Yerzmyey September 2013 Brand new software
  • Assembly - Loops bigger than 255Hi, It looks like it's a bit difficult to make loops with more than 255 cycles on Z80 machine code, since the 16-bit decrements (DEC) do not alter a…

    ... /> loop_high:
    DEC C
    JP P,loop
    RET
    Zerg Zerg October 2013 Development
  • Super Wonder Boy in Monster Land (BUGFIX)Please add the following "known errors" description for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005053"]Super Wonder Boy in Monster L…

    ... ]
    Bugfix patch provided by jp, Ralf, Metalbrain, and Bandit.[/QUOTE ...
    Einar Saukas Einar Saukas October 2013 Infoseek database
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... A
    CP 0
    JP NZ,writeagain
    #endasm
    CP 0
    JP NZ,writeagain

    org ...
    slenkar slenkar October 2013 Development
  • SkoolKit 3.6SkoolKit 3.6 has been released. In case you are unaware, SkoolKit is a set of command line utilities (written in Python) for disassembling Spectrum …

    ... the operands of CALL and JP instructions)
    [*]move a cigar ...
    SkoolKid SkoolKid November 2013 Announcements
  • that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…

    ... , commands such as CALL & JP using absolute addresses within the ...
    Battle Bunny Battle Bunny November 2013 Sinclair Basic
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... ,128
    call dos_set1346
    jp nc,0

    ; open ... ,fichero
    call dos_open
    jp nc,0

    ; repeat ... /> call dos_read ; read block
    jp nc,0

    ; finsi ... that ret changed to a jp ...).
    - I would like to ...
    Zup Zup December 2013 Development
  • Assembly code auto optimiserFor my Finders Keepers Plus project I'm considering writing an Assembly code auto optimiser. Way back when I wrote the original FK I considered optim…

    ...

    [code]
    jp SomeSub
    [/code]

    jp instructions and turn them ... 16 bit vectors directly into jp instructions :)

    ... /> ; ##OPT jp->jr, callret->jp,

    jp function1
    David Jones David Jones December 2013 Development
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... h
    dec h
    jp z, l_mulu_16_8x8

    l0_mulu_24_16x8 ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • z80 less than and greater thanI am writing a keyboard routine where the pressed key code number is held in A. I only want to action the number key presses 1 to 9 (codes 49-57) so …

    ... is clear? Would it be jp p,loop ?

    The ... A so I do jp c,loop
    jp c,loop
    So the complete code (if jp p,loop is right) would ... ]
    cp a,49
    jp p,loop
    cp a ... ,57
    jp c,loop
    key_checking ; each ...
    Speccy_James Speccy_James February 2014 Development
  • IX register wonderings...***noob alert*** I'm doing a lot of these in my program: ld a,(ix+n) cp 0 jp z I know you can do things like this: dec (ix+n) but can you test …

    ... +n)
    cp 0
    jp z

    I know ...
    Atari_Jetman Atari_Jetman February 2014 Development
  • Ghosts n' Goblins loaderI'm trying to put Ghosts n' Goblins onto a +3 disk but struggling to understand the mc loader. Basic loader [code] ink 7 : clear 25000 : load "" cod…

    ... : LD B, 176
    65174: JP NC, 65163

    < ... /> 65351: CALL 65447
    65354: JP NC, 0
    65357: LD ... LD B, 176
    65421: JP NC, 65410
    65424: LD ... 65432: CP 2
    65434: JP NC, 0
    65437: LD ... LD (HL), B
    65533: JP PE, 60016[/code]
    Speccy_James Speccy_James February 2014 Development
  • Venturespeak Helplooking at the code from ZX Computing, October, November & December 1986. How do I make the code do more then 3 letters say 5. and could it be made …

    ... CP 002
    60033 D232EB JP NC,TIMEUP
    60036 3A085C ... CALL PROMPT
    60195 C378EA JP WAIT

    60198 3E16 ... RST #10
    60280 C360EB JP HERE

    60283 3A9BEB ...
    ardentcrest ardentcrest February 2014 Development
  • Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…

    ... instructions to throw interrupts
    jp never_end


    ;Draw ... af
    dec a
    jp nz,draw_char_frame_loop

    ;Bottom ... hl ;retrieve data address
    jp print_char_hl_de ;draw character

    joefish joefish March 2014 Development
  • Happy birthday jp!Hope you've had a great day! :)

    Hope you've had a great day! :)
    cmonkey cmonkey April 2014 Chit chat
  • understanding machine codeHi Quick question. Am not really sure if it fits development forum as its not really development per se its more a learners question about developm…

    ... sense) which runs :

    JP 15f2
    EXX
    PUSH ...
    username username April 2014 Sinclair Miscellaneous
  • 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…

    ... then RANDOMIZE USR 31144 (or JP or CALL, or whatever) and ...
    LuMan LuMan April 2014 Development
  • Gasman live in concert at Revision - videosThis Easter weekend was the Revision demoparty in Saarbr?cken - the largest pure demoscene event of the year, held over 4 days with close to 1000 vis…

    This Easter weekend was the Revision demoparty in Saarbr?cken - the largest pure demoscene event of the year, held over 4 days with close to 1000 visitors. I'd signed up to play a Speccy chiptune live set on the last night at the second stage (a cosy ...
    gasman gasman May 2014 Sinclair Miscellaneous
  • Unusual custom turbo loaders - with sourcesI have always been fascinated by turbo loaders; my games all feature a TZX version with one of such schemes implemented, and I have been experimentin…

    ...
    LD B,208
    JP NC,65459
    LD A ...
    LD B, 208
    JP NC, 65459
    LD A ...
    Alessandro Grussu Alessandro Grussu May 2014 Development
  • SkoolKit 4.0SkoolKit 4.0 has been released. SkoolKit is a set of command line utilities for disassembling Spectrum software, into ASM format or into a bunch of …

    ... in the operands of CALL, JP, DEFW and LD instructions)
    SkoolKid SkoolKid May 2014 Announcements
  • Anyone can help with hacking TwisterI believe I have found a truly unhackable game. Twister The mother of Charlotte.... It's the decryptor starting at 65068 I'm having problems with. …

    ... nigh-on impossible to me. JP?
    nuggetreggae nuggetreggae June 2014 Development
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…

    ... like this:

    0x0028 JP 0x335B
    0x002B RST 0x38 ... this.

    0x0028 JP 0xFFFD
    0x002B RST 0x38 ... ,#0xFFFF ; DE=0xffff
    0x0005 JP 0x11CB
    ...
    0x11CB ... end jump to the original jp location.

    --- INTERFACE ...
    tstih tstih July 2014 Development
  • Help with Manic Miner tweaksPlease. :) This is the Software Projects version, simply as I had it to hand. [B]Problem 1:[/B] I've learned a bit (actually quite a bit) and manag…

    ... /> POP HL ; 36838 225
    JP L_9033 ; 36839 195 51 144 ...
    spider spider July 2014 Games
  • Happy birthday gasman!Happy birthday..! Hope you've been having a good 'un..

    Happy birthday..!

    Hope you've been having a good 'un..
    Morkin Morkin July 2014 Chit chat
  • +2A fixing Loaders request: Ghosts N? Goblins, Travel with Trashman and DuetIf anyone fancies, I would appreciate a lot to get the loaders, you know, the BASIC listing with a lot of DATAs, to type them, save them in cassette …

    ... !

    By the waym, jp, if you are reading me ...
    Ivanzx Ivanzx July 2014 Games
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... HL,[true (VARS)], CALL (not JP) $2900 V_EACH. If it still ...
    Battle Bunny Battle Bunny July 2014 Sinclair Basic
  • Pause XWhat would be the best way to implement a short delay (unlike with basic, without any key detection to cut it short) in assembly ? Basically somethi…

    ... the loader call and the JP to execute the code, just ...
    spider spider August 2014 Development
  • ANN: Tipshop updated Tuesday, 30 September 2014Tuesday 30 September 2014 2 updates within a couple of weeks of each other - you're spoiled. Or something * JP provided a correction for a cheat fo…

    ... spoiled. Or something

    * JP provided a correction for a ...
    hackersanon hackersanon September 2014 Announcements
  • New chiptune album (ZX81, Spectrum, Sam Coupe, Atari ST, Amiga)Not entirely Sinclair - granted - but maybe somebody might be interested. ________________________________ YERZMYEY - CHIPTUNES (C) 2014 DOWNLOAD M…

    ... /chiptunes/21_Gasman-Spacecake_BONUS.mp3]21. Gasman - Spacecake (Bonus Track / ZX Spectrum ... minutes

    Guest artists: Gasman, ugm27

    ***Special thanks ...
    Yerzmyey Yerzmyey October 2014 Sinclair Miscellaneous
  • ANN: Tipshop updated Saturday, 29 November 2014Saturday 29 November 2014 2 updates in a month - woohoo! * Andy Ryals sent in POKEs for Archeomania , Dark Tricks, Donkey Kong Reloaded Again, Find…

    ... /> * Zup reported a bug and Jp provided the fix for Rocky ...
    hackersanon hackersanon November 2014 Announcements
<1…891011121314…34>

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