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<1234567…34>
  • Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…

    ... table somewhere and loaded into HL as you enter the screen ... also be quicker than writing down HL for each screen.)
    48K 48K February 2007 Development
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    You use inline version of DOWN HL like this:

    inc ... screen address by 1 pixel down
    ld a, h
    down
    ld a, h
    Alone Coder Alone Coder October 2013 Brand new software
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... ]You use inline version of DOWN HL like this:

    inc ... screen address by 1 pixel down
    ld a, h
    down
    ld a, h
    Einar Saukas Einar Saukas October 2013 Brand new software
  • Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …

    ... the solution either)

    HL addresses the first of a ... if they run upwards or down.

    The challenge is ... .e. bit 7 of initial HL, is known to be always ...
    Geoff Geoff July 2002 Sinclair Miscellaneous
  • How to get Grahics to wrap vertically around the screen?I am using the following code to draw an image to the screen. First I use HL to contain ROW and COLUM I then call the MapScreenFunction As I draw m…

    ... H = pixels down, L = chars across
    ; exit HL = display address
    ld h,0
    add hl,hl
    ld de,scrtable
    add hl,de
    add a,(hl)
    inc hl
    ld ... h,(hl)
    ld ...
    robpearmain robpearmain May 2004 Development
  • WoS slowing down - again?Is this site slowing down again, or is it just me? Pages are taking a while to appear...

    Is this site slowing down again, or is it just me? Pages are taking a while to appear...
    General_Zod General_Zod August 2004 Sinclair Miscellaneous
  • Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…

    ... JR NZ,up
    down:
    ; Y Counter
    ; On Entry:
    ; HL Contains Screen Address
    ; DE ... ; On Exit
    ; HL Contains Screen Address
    ; ...
    robpearmain robpearmain August 2004 Development
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... JR NZ,up
    down:
    ; Y Counter
    ; On Entry:
    ; HL Contains Screen Address
    ; DE ... ; On Exit
    ; HL Contains Screen Address
    ; ...
    robpearmain robpearmain August 2004 Development
  • Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…

    ... SET b, (HL).

    This is broken down (in machine cycles ... />
    This is, apparently, broken down as follows:

    M1 ... /> How is this instruction broken down ?

    LD (IX+ ... 12T longer than the normal (HL) instruction: 4T to read the ...
    GOC GOC September 2004 Development
  • RZX Archive downFor the last couple of days, the RZX Archive site has been down. It's hosted on my home PC, and I'm experiencing difficulties, which may be HD releat…

    For the last couple of days, the RZX Archive site has been down. It's hosted on my home PC, and I'm experiencing difficulties, which may be HD releated. Hopefully it should be back up over the weekend.

    Cheers,

    Daren
    Daren Daren September 2004 Games
  • Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…

    ... by the number of tiles down (currently 6). Each tile being ...

    LD (MODHLA+1),HL ;HL HOLDS ADDRESS IN BACKGROUND DATA ... ,AF'

    EX DE,HL ;HL = SCREEN ADDR.

    LD ... /> AND 224 ;position and move down 2
    ADD A,68 ...
    dmsmith dmsmith September 2004 Development
  • Slowing down the emulationHi! I'm looking for a speccy emulator that lets me slow down (not speed up!) the emulation. I know good old X128 can do this, but does anyone know ab…

    ... emulator that lets me slow down (not speed up!) the emulation ...
    IPerezG IPerezG December 2004 Emulators
  • Retro scenes slowing down?There was a post last month about fewer people posting here, but is the entire retro scene in recession? I'm talking about fewer updates on websites…

    ... slowdown in updates. (Subjective, probably down to chaosmongers spending most of ...
    Jmk Jmk January 2005 Sinclair Miscellaneous
  • Anyone help re-factoring a tile functionI had some excellent feedback for re-factoring my function that displays the colour for my screen tiles. Can anyone offer some help to improve the fu…

    ... LD (DE),A
    INC HL
    INC E
    ... LD (DE),A
    INC HL
    DEC E
    ... ; Up
    DEFW TILEIMAGE3 ; Down

    TILEIMAGE0 DEFB 0 ...
    Mr Millside Mr Millside February 2005 Development
  • Celebrity Love Island - Hollyoaks Saul goes down like a lead balloonIs old Saul off Hollyoaks going down a bomb with Lady Isabella Hervey or what? Jesus, does she have to spell it out for him in TEN FOOT HIGH FLASHIN…

    ... old Saul off Hollyoaks going down a bomb with Lady Isabella ...
    BigBadMick BigBadMick May 2005 Chit chat
  • Top down scolling shoot em upsI remember lovin games like 'He who dares wins 2' and 'Rambo' i.e top down scrolling shoot em ups. Can anyone recommend any similar type games?

    I remember lovin games like 'He who dares wins 2' and 'Rambo' i.e top down scrolling shoot em ups.

    Can anyone recommend any similar type games?
    Laur Laur June 2005 Games
  • http://www.rzxarchive.co.uk/ DOWN?Hi all, does anybody have any idea if this site [url="http://www.rzxarchive.co.uk"]http://www.rzxarchive.co.uk[/url] is down? Just cannot get on. Th…

    Hi all,
    does anybody have any idea if this site [url="http://www.rzxarchive.co.uk"]http://www.rzxarchive.co.uk[/url] is down? Just cannot get on.

    Thanks,
    Miskox
    miskox miskox September 2005 Sinclair Miscellaneous
  • Machine Code: quicksort optimisationI came across this z80 quicksort implementation when going through the wikipedia article on the same. It's 44 bytes long. I was wondering if any of …

    ... a go at wittling down the code or ... or a
    sbc hl,de
    jp c ... (de),a
    pop hl ;restore pivot
    jp ... next2 pop hl ;restore pivot
    pop hl ;pop lo ...
    Arjun Arjun January 2006 Development
  • Job-hunting is getting me downJob-hunting is really getting me down at the minute. I'm looking for a new job and I signed on with REED recruitment in Belfast at the beginning of …

    ... -hunting is really getting me down at the minute.

    BigBadMick BigBadMick February 2006 Chit chat
  • Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …

    ... map so could finally track down the 8th guy you have ... , all its doing is incrementing HL by one over and over ... poking A into the address HL. That is until it gets ... image. After executing the "INC HL" the pointer then jumps to ...
    Womble Womble March 2006 Sinclair Basic
  • Sinclair Heaven down.Sinclair heaven appears to be down... [url]http://sinclair-heaven.net[/url] redirects to a 'site suspended' page Nice unfriendly message too.

    Sinclair heaven appears to be down...

    [url]http://sinclair-heaven.net[/url] redirects to a 'site suspended' page

    Nice unfriendly message too.
    andrew_rollings andrew_rollings June 2006 Sinclair Miscellaneous
  • PC CPU heatsink and fans to cool down Speccy!Ah ha! I've just had an idea! taking apart some scrap PCs I decided to take the CPU heatsink and fan units off and see if I can attach them to the …

    ... will help keep the temperature down?!?!

    (I was getting ...
    Count Count July 2006 Hardware
  • SimCoupe 1.0 released[size=-2](for those of you that don't read CSS)[/size] SimCoupe, the SAM Coup? emulator, has been updated to version 1.0. This major release adds ma…

    ... support to generate cursor up/down
    - Added basic Vista beta ... [Win32]

    - Fixed ADC HL,rr incorrectly setting N flag ...
    obo obo July 2006 Emulators
  • Retrogamer web site down (3:40pm UK time)It's been down since at least lunch time (12:30pm). [url]http://www.retrogamer.net/[/url] Part of me is thinking "oh no, not again..." 'cos I subsc…

    It's been down since at least lunch time ( ...
    Mousey Mousey October 2006 Chit chat
  • Bat Out Of Hell 3What's the general opinion of Bat Out Of Hell 3? Personally, I think it's dissapointing, it lacks the operatic quality of 1 and 2, which I think is p…

    ... , which I think is probably down to the fact that Jim ... person shooter, and "prove" that HL is obviously better than BOOH ... PC games review magazine, whereas HL has won loads. Bless him ...
    ewgf ewgf November 2006 Chit chat
  • Sinclair Heaven DownSinclair Heaven will be down for a while so I can test version 3...

    Sinclair Heaven will be down for a while so I can test version 3...
    Lee Fogarty Lee Fogarty November 2006 Chit chat
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... system variable PROG
    dec hl ; move hl down one address

    inc hl ; move HL up one address


    add hl,hl ; multiply
    add hl,hl ; by
    add hl,hl ; eight
    chev chev January 2007 Development
  • Top Down RacersWere there any good top down racers on the Speccy, it seems the Championship Sprint conversions were pretty rubbish, can anyone suggest any alternati…

    Were there any good top down racers on the Speccy, it seems the Championship Sprint conversions were pretty rubbish, can anyone suggest any alternatives.
    Readboy Readboy February 2007 Games
  • Comments for small "sprite" routine wantedI have just written my first machine code program and I am quite happy (and proud) to get it working! :smile: As a child I never learned anything e…

    ... B]loadgraphic[/B]
    ld hl,16384 ;screen address
    ... (hl),a ;put graphic into screen
    inc h ;down one ... second byte
    ld (hl),a ;write earlier rotated ... memory
    dec hl ;move back one character ... /> inc h ;move down one line
    dec ...
    Rickard Rickard May 2007 Development
<1234567…34>

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