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Search Again :: Adv Search 1000 results in 0.017s
<1…18192021222324…34>
  • Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…

    ... please give me an assembler routine that would do this? I ... to specify the column and call it from BASIC.
    zxbruno zxbruno May 2012 Development
  • What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…

    ... with zero.
    call 8859 ; set permanent ... .

    call 3503 ; ROM routine - clears screen, opens ... remember the value.
    call nc,mpr ; being pressed, ... ,
    ; this routine is called prior to ...
    Saboteur Saboteur May 2012 Development
  • ULA TEST 3 results on real hardwareHi guys, I'm writing small spectrum emulator and I wanna implement precise emulation for different spectrum models :-) I found nice test for conten…

    ... :-)

    I found nice test for contended memory - [URL="http ...
    ZXMAK ZXMAK May 2012 Emulators
  • Moving a line down the display in assembler?...It's not a "[I]how can I do it[/I]" question, it's more a "am I missing something in trying to do it a new way" kinda question. What I've been doing…

    ... /> loop1: ld (hl),255
    call OnePixelLineDownHL
    djnz loop1
    routine that generates a 512 byte ... It seems easy enough;
    - call this code and you get ... br />
    Writing a quick routine, that draws the same block ...
    Sokurah Sokurah June 2012 Development
  • redirecting Z80 sub-routine CALLsI'm working on changing a TR-DOS disk program to work from standard +128k tape and thought that rather than painstakingly working through the code ma…

    ... could install some automatic redirection routine so that whenever the PC ... it would jump to my routine instead. This would be just ...
    Battle Bunny Battle Bunny August 2012 Development
  • TESTROM3 - utility/rom for test your ZXHere is TESTROM3 utility as 16kB ROM file + flasher for install this rom to divide eeprom (or mapram mode). Work also on ZX Spectrum without ROM and …

    ...
    TESTROM3 - utility for test your ZX memory
    ==========================================

    TEST 128kB MEMORY
    =================

    TEST FIRST VIDEORAM
    ===================
    Test only first videoram ...
    velesoft velesoft August 2012 Sinclair Miscellaneous
  • Hep needed with a bit of code...I've written a bit of code to make a character move across the screen, but the counter stops at 29 when the 3 lines to delete the characters trail ar…

    ... trail are included.

    Routine starts at 63300, 63289 is ... /> space: ld a, 2
    call 5633
    ld bc, 10 ...
    ld de, 63290
    call 8252
    ret
    prb ... br /> ld (63298 ),a
    call space
    ret
    rpg ...
    daveysludge daveysludge August 2012 Development
  • PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…

    ... numerical value using the print routine in the ROM?


    ld a,2
    call 5366
    ld de, (address ... of text to print)
    call 8252

    PS. I ...
    daveysludge daveysludge August 2012 Development
  • need a new method for m/c parameter assignmentI've been using a variable length function of the form: "FN a$(a$,a[,b...,z])=STR$ USR md" to search a data table and return a string result. By putt…

    ... prior ROM call to the $27BD "Scanning Function" sub-routine takes 128kT ...
    Battle Bunny Battle Bunny September 2012 Development
  • Anyone know where this is going wrong?I've written a simple routine to make a block drop from the top of the screen, but for some reason it wont 'cover its trail' so to speak. The block i…

    ... wrong...

    The routine starts at 60000:

    CALL 5633
    LD DE, dat ... /> LD BC, 12
    CALL 8252
    RET
    ... LD A, 2
    CALL 5633
    LD DE, dat ... /> LD BC, 12
    CALL 8252
    RET
    ...
    daveysludge daveysludge October 2012 Development
  • Mini scroll routineI'm looking for a routine that scrolls a small section of the screen downwards and replaces it with nothing, 2 x 2 charcter blocks to be precise, to …

    I'm looking for a routine that scrolls a small section ... />
    I seen a similar routine in 'Input' magazine many years ...
    daveysludge daveysludge October 2012 Development
  • Covering my tracks using OVERI've got myself in a bit of a mess again I'm afraid, the routine I have written is for 4 characters to move across the screen 2 spaces at a time in I…

    ... again I'm afraid, the routine I have written is for ...
    ld a,2
    call 5633
    ld de,dat ...
    ld bc,15
    call 8252
    ret
    dat ...
    daveysludge daveysludge October 2012 Development
  • Help needed...I am at my wits end with this pigs ear of a routine, can anyone simplify it and make it work as it should? Basically it should make the characters '…

    ... this pigs ear of a routine, can anyone simplify it and ... br /> ld bc,13
    call 8252
    ret
    ... br /> ld bc,15
    call 8252
    ret
    ... br /> ld bc,15
    call 8252
    ret
    ... br /> ld bc,15
    call 8252
    ret
    ...
    daveysludge daveysludge October 2012 Development
  • multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…

    Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • calculator and sinusok, look at the Sysel's routine: [PHP]3 5b00 *s 4 5b00 tabsin = #7000 03 mksin 19.11.1995 Busy soft …

    ... , look at the Sysel's routine:
    [PHP]3 5b00 *s ... hl
    11 8009 cd282d call #2d28;
    12 800c ef ... #38
    22 801c cdd52d call #2dd5
    23 801f e1 ...
    g0blinish g0blinish October 2012 Development
  • Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…

    ... an annoying little JR or CALL routine.

    I need to ...
    R-Tape R-Tape November 2012 Development
  • Asking for help: ZXBC to ASM routine translationHallo, In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler [code] sub light(x as uinteg…

    Hallo,
    In order to save some bytes and gain speed, I'm asking for translation of a very simple ZXBC routine to Assembler
    [code]
    sub light(x as uinteger,y as uinteger,intensity as ubyte)
    dim adr as Uinteger
    if x
    LCD LCD November 2012 Development
  • Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…

    hi! please, help with code:
    [PHP]For x=-100 To 100
    For y=-100 To 100
    If (x/2-25)*(x/2-25)+(y-50)*(y-50)
    g0blinish g0blinish November 2012 Development
  • What's the correct Spectrum colour palette?Prompted by the recent SCR-to-GIF conversion thread, I was pondering writing one in Z80 assembler. As I did a LZW compression routine a while ago tha…

    ... I did a LZW compression routine a while ago that's ... this I prepared a little test card program so I could ... WHITE I then saved the test card from Fuse instead and ...
    Battle Bunny Battle Bunny November 2012 Development
  • Optimisations in Exomizer Z80 decrunch codeThis is the 163 bytes old code (simple and optimized): [CODE] ld iy, exo_mapbasebits ld a, 128 ld b, 52 push de exo…

    ... ldi
    exo_mainloop:
    call exo_getbit ;literal?
    jr ... by Amstrad CPC interrupt routine. Also there is ... the exo_getpair routine before the first call to that routine.
    ... ret nz") of the exo_getbit routine.

    The ...
    antoniovillena antoniovillena November 2012 Development
  • Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …

    ... general purpose ellipse drawing routine which will plot (although ... ld (23653),de ;STKEND
    call $2d28 ;STACK_A = xh
    ... defb $38 ;end_calc
    call $2dd5 ;FP_TO_A
    pop bc ...
    Battle Bunny Battle Bunny November 2012 Development
  • +2A - stuck on test signalHi, new member here, hope it's OK to ask for help... I recently rescued my old +2A from my parents' loft. When I tried to test it out, I've found th…

    ... ' loft. When I tried to test it out, I've found ... the menu, it shows the test signal (colour bars with "1987 ... internet - it seems that the test signal should only appear if ... can only get to the test signal colour bars and beeps ...
    Scarysheep3000 Scarysheep3000 November 2012 Hardware
  • Ticks, the first command line Z80 emulatorThe project page is in Spanish: [url]http://retrolandia.net/foro/showthread.php?tid=43[/url] So I will expain a little. Ticks is an emulator that …

    ... the execution in a new call to the program. Also the ... count the tstates in a routine, when you are speed optimizing ... file process across a Z80 routine.

    The emulator core ...
    antoniovillena antoniovillena November 2012 Development
  • Ram test / diagnostic software for 128k?I need a ram test program urgently (as I have to bring this machine into the party place tomorrow) yet I couldn't find any in infoseek by typing "ram…

    I need a ram test program urgently (as I have ... by typing "ram test" :) And most of the test suites based on ... />
    Are there any ram test suite which runs from RAM?
    Arda Arda December 2012 Sinclair Miscellaneous
  • A 128 Routine to Put Tokens in StringsI was writing a DEF FN on the +128k and decided that I'd had enough of not being able to put function tokens in strings without a great palaver and s…

    ... I wrote this little BASIC routine to do it for me ...
    Battle Bunny Battle Bunny December 2012 Sinclair Basic
  • Interview with Clive Townsend (Saboteur)Here you have at [URL="http://www.elmundodelspectrum.com"]www.elmundodelspectrum.com[/URL] this exclusive interview with Clive Townsend. Don?t forget…

    ... a routine, compile it, then save it out to tape. To test ...
    jmvbok jmvbok December 2012 Sinclair Miscellaneous
  • checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…

    This routine starts off with HL=$ffff ... to A and calls this routine, ending up with another value ...
    Battle Bunny Battle Bunny January 2013 Games
  • HMV expected to call in administrators within hours[url]http://www.telegraph.co.uk/finance/newsbysector/retailandconsumer/9801487/HMV-expected-to-call-in-administrators-within-hours.html#[/url] sad b…

    ... /retailandconsumer/9801487/HMV-expected-to-call-in-administrators-within-hours.html ...
    mel the bell mel the bell January 2013 Chit chat
  • Hidden message in Down To EarthJust found this in the Down To Earth code. I like reading these old messages left behind by programmers. [code]WELCOME TO ORIFICE Credits Darren B…

    ... />
    Tony Lill
    Print routine, Opus & Zeus

    it).
    Some people call me a complete &
    FrankT FrankT January 2013 Sinclair Miscellaneous
  • Compiling Lisp to Z80.I am doing some thought experiments on this. Here is an example of a Lisp program. It adds two numbers together. [code] (define (add x y) (if (= …

    ... stack, and calls the add routine.
    [code]
    dec ... b
    push a
    call add
    ret
    [/code ... this is a horribly inefficient routine. I translated it directly from ... be made again. The routine is then iterative rather than ...
    wilsonsamm wilsonsamm January 2013 Chit chat
<1…18192021222324…34>

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