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<1…11121314151617…34>
  • How to write self-relocating code using Pasmo?With z80asm, I can write code like this: [CODE] org 0 ; a total lie, but makes the reloc sums work .dest: equ …

    With z80asm, I can write code like this:

    [ ...
    stephenw32768 stephenw32768 August 2013 Development
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... written to the display memory.

    The memory map remains as ... />
    I'm planning to write a demo program for it ...
    Basher Basher August 2013 Hardware
  • Hardware description - BETA DISK interfaceExist more versions and clones of BETA DISK interface. Beta disk 48, beta disk 128, brasilian clones of beta disk 48, russian clones of beta disk 128…

    ... and always enable betadisk memory paging mechanism. Then ... br />
    [B]MEMORY DISCONNECTION:[/B]
    - external ... /> [CODE]
    ADRESS WRITE READ
    #1F(31 ... Control port #FF(255) for write
    ------------------------------
    bit 0 ...
    velesoft velesoft August 2013 Hardware
  • Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…

    ... byte from external memory, disconnect external memory(connect original ZX ... contol port: #E3(227) - write only[/B]
    [CODE]D0 ... then this ram page is write protected (bacause ram 3 ... br /> [CODE][U]ADRESS READ WRITE[/U]
    #A3(163) ...
    velesoft velesoft August 2013 Hardware
  • Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…

    ... realized when I attempted to write my first lines of code ... emulated Spectrum crash trying to write simple routines, I am guessing ... they somehow manage to stay memory-resident and not needed to ...
    memrah memrah September 2013 Sinclair Miscellaneous
  • Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…

    ... (levels, screens, music etc.) into memory banks 1, 3, 4, 6 ... 49152 and above, I need memory bank 0 to be switched ... /> I understand loading data into memory banks is easier because all ...
    Alessandro Grussu Alessandro Grussu September 2013 Development
  • 'Best' Emulator?As mentioned in other threads, I'm in the process of disassembling and recreating my Finders Keepers source code so that I can write Finders Keepers+…

    ... code so that I can write Finders Keepers+.

    I ... me to easily inspect the memory contents at any time. Ideally ...
    David Jones David Jones September 2013 Development
  • Reading from a Write FileI have been speaking with a customer who uses a small bit of machine code to do a screen dump. The machine code is 650 bytes long. The machine code…

    ... the error reading from a write file !!

    Any ideas ...
    rwap rwap October 2013 Sinclair Basic
  • Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…

    ... from the end of one write to the start of the ... ),HL since the delay between memory operations is then only 13 ...
    joefish joefish October 2013 Development
  • Using +3e ROMs without physically replacing internal ROM chips?Is there any external hardware available which can logically replace the internal ROMs of a +3 with, e.g. the +3e ROMs, *without* having to open up a…

    ... a stretch too far. Even write-protected, battery backed RAM would ... .

    Is there any existing hardware which can do this ...
    u6c87 u6c87 November 2013 Hardware
  • A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…

    ... :

    Nowadays if you write [B]"multicolor"[/B] everyone assumes ... will typically need more available memory (since it will need more ... typically doesn't have much memory left to store several animation ...
    Einar Saukas Einar Saukas November 2013 Brand new software
  • Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …

    ... 'm looking for a simple memory transfer routine that shifts 32 ...
    daveysludge daveysludge November 2013 Development
  • What CF Card For your DIVideI recently purchased a DIVide with a 4gb CF Card [IMG]https://www.bechtle.co.uk/medias/200x200/200x200-EcsHUb93uHc6x9N9CBYV58-30.jpg[/IMG] and have…

    ... )
    1.5 - 5MB/sec. write rate

    Thinking of ... Extreme 400X Compact Flash CF Memory Card

    [IMG]http ...
    Read 60MB/s
    Write upto 60mb/s

    mecivic mecivic December 2013 Hardware
  • 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…

    ... ,
    I ran out of memory, so I was thinking
    write out all the machine code ...
    slenkar slenkar 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…

    ... /> I didn't want to write the code like that though ... could ever fill that much memory with a game!? :)

    David Jones David Jones December 2013 Development
  • Compact Flash Card In "Memory Mode" - (Help)Hello my fellow WoS'ers I have been developing a Z80 8bit interface with a compact flash card port based on Pera's ZXCF "memory mode" interface for …

    ... based on Pera's ZXCF "memory mode" interface for the +2AB ...
    Zetr0 Zetr0 January 2014 Hardware
  • ZX memory questions1. what is the highest address in a 48k spectrum that can be written to? 2. can you write to an address less than 16384 (on real hardware) 3.48k...…

    ... ?

    2. can you write to an address less than ...
    ASH-II ASH-II January 2014 Sinclair Miscellaneous
  • How to load a +3 dos file from disk to memory in z80Hi all again, Are there any example z80 code listings (not BASIC) to load a +3 binary dos file from disk to a specific memory destination? Thanks.

    Hi all again,

    Are there any example z80 code listings (not BASIC) to load a +3 binary dos file from disk to a specific memory destination?

    Thanks.
    Speccy_James Speccy_James February 2014 Development
  • Emulator support for East London Robotics SP80 memory expansion?Do any emulators support the [url=http://www.worldofspectrum.org/infoseekid.cgi?id=1000377]East London Robotics SP80 memory expansion[/url]? That add…

    Do any emulators support the [url=http://www.worldofspectrum.org/infoseekid.cgi?id=1000377]East London Robotics SP80 memory expansion[/url]? That adds another 32KB of RAM which you can page in/out at address $8000.
    mark_k mark_k February 2014 Emulators
  • USB Memory stick testA friend of mine is selling some USB memory sticks that he claims are 500gb for ?35! I said that can't be right, so he's given me one to try. When I …

    ... mine is selling some USB memory sticks that he claims are ... . I thought you "lost" more memory than that with new drives ... (I'm also aware that memory is getting smaller these days ... Sony have developed a 2TB memory card!).

    All these ...
    Bermondsey Bob Bermondsey Bob March 2014 Chit chat
  • New Game: YAHTZXHi all, Well, it?s taken me more than 3 years, but I think I?ve finally got there. Here is YAHTZX, a 100% assembler version of Yahtzee (? Milton Bra…

    ... of most of the used memory locations etc., and the assembler ... actually owned one), I did write several programs in assembler for ... ]Others:[/B]
    How to Write Spectrum Games by Jonathan Cauldwell ...
    Shando Shando March 2014 Brand new software
  • CPCDiskXP v2.5.1 with support (limited) to write for USB floppy drivesHi, I am the developer of [URL="http://www.cpcmania.com/"]CPCDiskXP[/URL] and wanted to inform you that there is a new version of the program with su…

    ... filling the dsk, we will write to a USB floppy drive ... , by pressing the "Write USB Floppy" button
    [*]Select ... (a or b) and click 'Write'
    [*]Ready to be tested ...
    Mochilote Mochilote March 2014 Emulators
  • 4294967296 pseudo output portsIn an effort to avoid any hardware conflicts with the clashbasher interface I've been looking for an alternative to using the spectrum's ports for ou…

    ... .

    I considered a memory mapped approach, but that seemed ... n from memory and then in the next machine cycle write the ... instruction and write your own data to the spectrum memory. It would ... the byte in the spectrum memory with one in the cpld ...
    Basher Basher March 2014 Hardware
  • Loading data from 128 memoryAfter all these years I have come across the LOAD! in 128 basic for storing/restoring data in the 128 memory. How do I go about implementing this in…

    After all these years I have come across the LOAD! in 128 basic for storing/restoring data in the 128 memory.

    How do I go about implementing this in machine code?

    Thanks in advance...
    daveysludge daveysludge March 2014 Development
  • TAPlist - the emulator versionI've got this working reasonably well; there's just a couple of small extra features which I want to add. (Recall that TAPlist writes a formatted lis…

    ... of the BASIC program in memory to a TAP file. Just ... need of an assembler re-write.

    Anyhoo ... In the ... needs to be ready to write.
    [*]Each 6kb (max) block ...
    Battle Bunny Battle Bunny March 2014 Sinclair Basic
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... the Z80 writes to memory, that write is exposed on the ... the top 8K of memory to the external screen ... writing to ULA-contended memory of an external system? ... imposing the real-time memory writes onto an actual ... into the uncontended upper memory so it can copy ...
    joefish joefish April 2014 Hardware
  • WOM Memory Signetics 25120 Series 9046NHello, here: [url]http://www.ti.com/ww/en/bobpease/assets/www-national-com_rap.pdf[/url] at pages 128 und 129 you can find information about a very …

    ... information about a very usefull memory that unfortunately is not (more ...
    ingo ingo April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... off reads to the video memory into its own screen buffer ... 't be a disaster if write-only port addresses were all ...
    joefish joefish April 2014 Hardware
  • Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…

    ... routine to read data from memory(peek..etc) rather than using ...
    davepierce07 davepierce07 May 2014 Sinclair Basic
  • 48k memory dump to 128k???Having problems getting a 48k snapshot to load into 128k mode using ZX Spin. Tried saving 48k memory as a binary file and loading it back in 128k mo…

    ... .

    Tried saving 48k memory as a binary file and ...
    daveysludge daveysludge May 2014 Development
<1…11121314151617…34>

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