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<1…28293031323334>
  • Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…

    ... hl,BIN2040 ;H'L'=address of binary number
    ... e,l ;DE=LHS address
    djnz Loop4
    of binary number in bits ( ... multiple of 3
    BIN2040: ;start address of binary ...
    Battle Bunny Battle Bunny December 2013 Development
  • Self modifying code ??I made a game in C that was mostly accessing arrays and using FOR NEXT loops, I ran out of memory, so I was thinking would it be possible to use sel…

    ... (you can also take the address of a function, cast it as ...
    Paradigm Shifter Paradigm Shifter December 2013 Development
  • Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…

    ... be located at a multiple of 256 -- this shows up in ... of the table address: "LD I,address/256" -- I've taken the decimal address of ... the table, a multiple of 256, and divided ... . The z80 will jump to address x*256+x on interrupt ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • Spectrum Utility Routines Compendium (pending)I couldn't make up my mind into which section to put this, so it's ended up here for some tenuous reason. I haven't forgotten about this. I've been …

    ... models
    ** Get the starting address of a game
    ** A painter ... usage
    ** Insert a REM of a given length into a ...
    Battle Bunny Battle Bunny December 2013 Announcements
  • The official CSSCGC 2014 threadJust to announce that the comp.sys.sinclair Crap Games Competition 2014 is now open. It's home for the year will be; [url]http://www.mykeweb.co.uk/c…

    ... 23675 and 23676 with the address of a bank before using it ...
    Kweepa Kweepa January 2014 Games
  • The official CSSCGC 2014 threadJust to announce that the comp.sys.sinclair Crap Games Competition 2014 is now open. It's home for the year will be; [url]http://www.mykeweb.co.uk/c…

    ... 23675 and 23676 with the address of a bank before using it ...
    Rebelstar without a cause Rebelstar without a cause January 2014 Games
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... then the attribute column address and assertion of CAS for the second ... that the row address of the second byte pair of the four byte ... the 7 lower bits of the address (the dynamic memory has ... is that attribute and bitmap address of odd columns are formed with ...
    antoniovillena antoniovillena January 2014 Development
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... sorry. I misinterpreted this piece of text

    [QUOTE]
    address of the second byte pair of the four byte ...
    antoniovillena antoniovillena January 2014 Development
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... hl = root of decoder tree
    ; de = memory address of encoded message
    of left pointer = 0 then this ... a = decoded symbol, de = next address, c = next bit
    ... all of memory (all 128k of it) like a linear address space ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Brand new software
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ...
    "original file location" = start address of code = 29440
    "locate file ... at"= start address of packed data=24576 ; for example ...
    goodboy goodboy January 2014 Development
  • Which Windows Emulator will support SPECTRA?I want to start crossdeveloping games for SPECTRA, but it is a pain in the ass to save the TAP on USB Stick or SD Card and test them on my eMac SP Em…

    LCD, I have a number of ASM utility functions for the ... video modes (i.e. get address of attribute above or below a ...
    BloodBaz BloodBaz January 2014 Emulators
  • Which Windows Emulator will support SPECTRA?I want to start crossdeveloping games for SPECTRA, but it is a pain in the ass to save the TAP on USB Stick or SD Card and test them on my eMac SP Em…

    ... ]LCD, I have a number of ASM utility functions for the ... video modes (i.e. get address of attribute above or below a ... bitshifting routine to calculate attribute address from its X and Y ...
    LCD LCD January 2014 Emulators
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... Here's the source of how I made the ... /> db $0d ; end of line (no next line)
    of packer
    ldir ; do ... ld hl,65535-21602 ; address of compressed block
    ld de ... ,24100 ; address to unpack to
    ...
    FrankT FrankT January 2014 Development
  • 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…

    ... (i,e, *). Instead of using the & address of operator to, which would ... simply wanted a notional model of why the language was made ... 't bother with a bunch of hipsters who think they know ...
    spectrumlinux spectrumlinux January 2014 Chit chat
  • 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…

    ... the address of.

    "&val" will give you the address of where ... " will give you the address of where a pointer to integer ... that you are taking the address of something that does not ... type, you can mentally think "address of".

    I hope ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Chit chat
  • 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…

    ... long before they realised an "address of" operator was also going to ...
    AndyC AndyC January 2014 Chit chat
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ...

    ld hl,40000 ; address of compressed block
    ld de ... ,25200 ; address to unpack to
    call ... see in the source the address to unpack the game to ...
    Speccy_James Speccy_James January 2014 Development
  • Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…

    ... Blockeditor, and changed the start address of the code blocks to where ...
    FrankT FrankT January 2014 Development
  • Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…

    ... make him eat it. Except of course I won't be ... find him because his company address is fake. What a lo ... at a holding address, you can't hide the address of the directors ...
    chinnyhill10 chinnyhill10 January 2014 Sinclair Miscellaneous
  • Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…

    ... at a holding address, you can't hide the address of the directors ...
    brcu brcu January 2014 Sinclair Miscellaneous
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ...
    I looked at bit of code from Dave Jones game ... font together with a bit of code from somewhere else ... .
    ld de,60000 ; address of our font.
    ld bc ... br /> inc hl ; next byte of old.
    inc de ; ... next byte of new.
    dec bc ; ...
    alienbanana alienbanana February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... & 23607 holds the address of the font which for some ... /> [CODE]org 60000 ;start address
    ld hl,(23606) ;load ... HL with value of font pointer
    push ... 256 less than actual start of data
    ld ... DE register to start of data string
    ...
    daveysludge daveysludge February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... br />
    "org 60000 ;start address
    ld hl,(23606) ;load ... HL with value of font pointer
    push ... /> loop ld de,dat ; address of string
    ld bc,eostr ... -dat ; length of string to print
    call ...
    alienbanana alienbanana February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... ]loop[/B] ld de,dat ; address of string
    ld bc,eostr ... -dat ; length of string to print
    call ...
    Morkin Morkin February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ...
    "org 60000 ;start address
    call 3503 ; Calls a ... ) ;load HL with value of font pointer
    push ... br /> ld de,dat ; address of string
    ld bc, ... eostr-dat ; length of string to print
    < ...
    alienbanana alienbanana February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... lines)
    ld de,dat ; address of string
    ld bc,[B ... ][I]27[/I][/B] ; length of string to print **

    Have pointed out a couple of discrepancies that sprung to the ... it's reached the bottom of the screen?
    Morkin Morkin February 2014 Development
  • How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…

    ... lines)
    ld de,dat ; address of string
    ld bc,[B ... ][I]27[/I][/B] ; length of string to print **

    of discrepancies that sprung to the ... it's reached the bottom of the screen?[/QUOTE]
    I ...
    rich_chandler rich_chandler February 2014 Development
  • ZX Spectrum code examplesThe shortage of sites with decent code examples seems to be few. The links to alot of sites that used to host them are disappearing into the ether. …

    ... set or cleared. Each address in that range controls 8 ... left character and each next address being each next character location ... screen you can get the address of its first pixel row from ... this formula :-

    address = column + 32 * row
    < ...
    alienbanana alienbanana February 2014 Development
  • Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…

    Note that the address of $1eaf for CLEAR_RUN is only ...
    Battle Bunny Battle Bunny February 2014 Development
  • A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…

    ... is a bunch of these sorts of subroutines, many familiar ... frame = sprite's graphic address (0=no change)
    ... ; address of sprite structure
    ld iy,rect_fullscreen ; address of clipping ... and this is one of the changes happening within ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Development
<1…28293031323334>

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