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<1234567…34>
  • Game enginesHow many Spectrum games were based on the same "game engine"? The most obvious examples are Ultimate 3d games (Knight Lore, Alien 8 etc.). Also "Cobr…

    ... of the "Cobra" engine. The 'Stack Scroll' stuff at least.

    Stack Scroll' on the lower portions of ...
    frobush frobush December 2005 Games
  • 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
  • Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…

    ... is pushed onto a stack before a snapshot is ... is possible that the stack is full when an emulator ... storing PC on the stack sometimes overwrites a graphics ... and pushing PC onto a stack, my emulator copies the ... program counter from the stack and then it copies ...
    Anonymous Anonymous October 2002 Emulators
  • Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…

    ... pixel left or right horizontal scroll of the spectrum screen.
    scroll with:
    ... rl (hl)/dec ...
    rtunes rtunes March 2003 Sinclair Miscellaneous
  • scroll?Hey guys! Great website! Is there anyway I can make my 128 not say "scroll?" and just make it scroll automatically?

    Hey guys! Great website!

    Is there anyway I can make my 128 not say "scroll?" and just make it scroll automatically?
    JohnDoyle JohnDoyle January 2004 Sinclair Basic
  • 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…

    ... RET



    SCROLL DI

    LD (SCRMODA ... />
    LD HL,(SCRPOS) ;SCROLL POSITION
    PUSH HL
    LD (SPMOD+1),SP ;preserve stack pointer


    SPMOD LD SP,0 ;restore stack pointer

    EI ...
    dmsmith dmsmith September 2004 Development
  • How can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up. In Assembly Language I want to do the following: I have 1 line of text …

    ... Pixel Rows). I want to scroll the whole line left one ...
    robpearmain robpearmain October 2004 Development
  • Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…

    ... that whould make the colors scroll.
    I know that the ... to see if I can scroll it at will instead of ... macro (for pasmo), it is stack based because I think I ...
    AE.Vasconcelos AE.Vasconcelos April 2005 Development
  • don't go Vista matesaGreetings. As you well know, there has been a massive campaign to push Vista into the users. I'm against it and always will be. Most of the ancient s…

    ... ? Well, lucky you, the dialogs stack right up, one after the ... vertical interface, where you must scroll up or down to get ...
    alban lusitanae alban lusitanae February 2007 Chit chat
  • Stack Up - level 13: anyone want a challenge?okay I swear this level is not humanly possible. if anyone doesn't know Stack-Up it's a simple Tetris type game - match 3 blocks of the same colour i…

    ... . if anyone doesn't know Stack-Up it's a simple ...
    def chris def chris September 2007 Games
  • How to avoid paging (scroll message)After 22 lines, the Spec asks if you want to scroll or break. I want to avoid that message and what the program to go on and produces lines on the sc…

    After 22 lines, the Spec asks if you want to scroll or break. I want to avoid that message and what the program to go on and produces lines on the screen without stopping for this message. Is there a trick?
    georgedb georgedb May 2008 Sinclair Basic
  • Disabling scroll? at the bottom of the screen.Everyone must have written something similar to: 10 PRINT "HELLO" 20 GO TO 10 at some point in their lives. But when you get to the bottom of the s…

    ... you if you want to scroll. How do I stop that ...
    Shaun.Bebbington Shaun.Bebbington September 2008 Sinclair Basic
  • New for 2009 - mc onelinersI found the limit of one line and one screen's worth of program really useful in (re-)learning BASIC, so I've decided to carry the format over into m…

    ... ),a
    ld hl,23263 ;scroll road
    ld de,23295 ... score
    pop hl ;empty stack
    ei
    ret
    bigjon bigjon December 2008 Development
  • Questions about registers, stack, etc.I was told that if I wanted to export code and create unprotected versions of games I should do the following: 1-Find the starting address by using …

    ... -Make a note of registers/stack
    5-Create a small ...
    zxbruno zxbruno January 2009 Sinclair Miscellaneous
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... /> I'm currently studying the stack and wrote the little program ... memory viewer to inspect the stack contents and pointer location.
    stack being essentially a stack (duh!) of 16 ...
    rahtgaz rahtgaz January 2009 Development
  • Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…

    ... br /> ;print car
    ;scroll road
    ;random road left ... showing where the machine stack is in the RAM.< ... push'. To write from the stack we use 'pop'. What ... goes on the stack first will come off last ... score
    pop hl ;empty stack
    ei
    ret; ...
    bigjon bigjon November 2009 Development
  • Star Wars scroll/crawl/title effectI may have seen this type of scroll on a Speccy game before, but I've never seen it as a type-in or part of a cover tape. Does anyone know how to do …

    ... have seen this type of scroll on a Speccy game before ...
    zxbruno zxbruno January 2010 Sinclair Miscellaneous
  • Locating the GOSUB stackI was wondering if someone could explain how to locate the dividing line between the GOSUB stack and the machine stack. Looking at the GOSUB routine …

    ... line between the GOSUB stack and the machine stack. Looking at the ... make entries on the GOSUB stack, but I can't see ...
    Battle Bunny Battle Bunny May 2011 Development
  • Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…

    ... . If hardware scroll is supported, use smoth scroll (1 pixel scroll). In this ... supported, use 2 pixel step scroll. Also this code need more ... />
    My idea for hardware scroll is simple. Store in a ...
    antoniovillena antoniovillena October 2011 Development
  • tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…

    ... still reference the m/c stack at the old location, so ... are preserved, but the GOSUB stack still gets reset, as it ... enhanced to preserve the GOSUB stack as well, but then it ...
    Battle Bunny Battle Bunny November 2011 Sinclair Basic
  • 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…

    ... of the available routines to scroll the entire screen in any ... that would allow me to scroll a specified column (1 x ...
    zxbruno zxbruno May 2012 Development
  • emulators which support H/V scroll bars?You know, for years I've been using Fuse with a pokey little 4" window and moaning about it because the resize arrows didn't (appear to) work, then I…

    ... of it and a vertical scroll bar appears at the right ...
    Battle Bunny Battle Bunny May 2012 Emulators
  • recovering the stack after an errorMy normal error handler starts with the stack as reset by LD SP,(ERR_SP) in $0053 ERROR_2, sets up some stuff and returns to BASIC via a "JP C,$1e73 …

    ... error handler starts with the stack as reset by LD SP ... , I search back through the stack to find the error code ... $0058 and my routine the stack history gets overwritten by the ... SP,(ERR_SP) to protect the stack until I've dealt with ...
    Battle Bunny Battle Bunny October 2012 Development
  • Game of 1992 and stack upReally enjoyed stack up - Rodland is pretty, but I could not work out how to smash the baddies once I'd got all the flowers! So, is there a game of …

    Really enjoyed stack up - Rodland is pretty, but I could not work out how to smash the baddies once I'd got all the flowers!

    So, is there a game of 1992? Who would have been making them then - and who would have been buying!?
    mickmog mickmog January 2013 Games
  • Stack 100 Light Pen "not available for the Spectrum"I notice that WoS has the "Stack 100 Light Pen" in the archive, but according to the companies own advert, it is not available for the Spectrum: [ur…

    ... notice that WoS has the "Stack 100 Light Pen" in the ... out because I have a Stack 100 Light Pen, and it ...
    spec-e spec-e May 2013 Infoseek database
  • Where do you stick the stack?...OK, so I've got a fair chunk of ASM code assembled from 24000 mark. The stack shouldn't get very big, just a few PUSHes and POPs of the main regis…

    ... assembled from 24000 mark. The stack shouldn't get very big ...
    Morkin Morkin July 2013 Development
  • SpecBAS 0.800 Released!Hi folks, it's that time again for another release. I was going to add a few more features, but I have other projects on the go at the moment, and it…

    ... any commands that utilise the stack - GO SUB, DO .. LOOP ... fix
    Forcing a SCROLL? prompt with a large font ... Scroll? message after all
    CASE no longer overwrites the case-stack ... one, which resulted in erroneous "Scroll?" prompts
    [/code]
    ...
    Dunny Dunny December 2013 Sinclair Basic
  • Help me with this Stack overflow Freak Show.I am asking a simple question on Stack overflow and once again, the closed minded morons a pointing and tutting. I'm asking a question about C point…

    ... asking a simple question on Stack overflow and once again, the ...
    Scottie_uk Scottie_uk January 2014 Chit chat
<1234567…34>

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Related Threads

  • Solution for overwritten stack in 48k SNA filesIt has been known for quite some time now that the 48k SNA file format has one serious fault, which is described in the file formats section on the W…
  • Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen.<br /> <br /> <br /> I can make a 1 one pixel scroll…
  • scroll?Hey guys! Great website!<br /> <br /> Is there anyway I can make my 128 not say "scroll?" and just make it scroll automatically?
  • How can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up.<br /> <br /> In Assembly Language I want to do the following:<br /> <br /…
  • Stack Up - level 13: anyone want a challenge?okay I swear this level is not humanly possible. if anyone doesn't know Stack-Up it's a simple Tetris type game - match 3 blocks of the same colour i…
  • Scrolly StackDoes this game have an ending? I have been playing for more than 15 minutes but it seems it doesnt have...
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  • How to avoid paging (scroll message)After 22 lines, the Spec asks if you want to scroll or break. I want to avoid that message and what the program to go on and produces lines on the sc…
  • Disabling scroll? at the bottom of the screen.Everyone must have written something similar to:<br /> <br /> 10 PRINT "HELLO"<br /> 20 GO TO 10<br /> <br /> at some point in their lives. But when …
  • Questions about registers, stack, etc.I was told that if I wanted to export code and create unprotected versions of games I should do the following:<br /> <br /> 1-Find the starting addre…

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