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  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... is exported "asm_atol" and several external functions are called "l_eat_ws, etc ... assigned to different blocks of memory. I know sjasm has something ... sections to relevant areas in memory. You can go further to ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Emulators
  • Android memory questionErm, I was sure there was already a thread about this before but I couldn't find it, perhaps it's deleted or something. So I'm asking this again. I …

    ... design concept is "unallocated memory is wasted memory" or "what's ... />
    The fact that memory is allocated quickly and stays ... frequently). Moving those apps to external storage (SD card) is ... they are hanging around in memory until something better needs ...
    ccowley ccowley September 2014 Chit chat
  • Android memory questionErm, I was sure there was already a thread about this before but I couldn't find it, perhaps it's deleted or something. So I'm asking this again. I …

    ... memory and 8gb SD, note the SD is internal, not your external ... SD card..your moving the apps from the 1gb internal memory ...
    beanz beanz September 2014 Chit chat
  • Android memory questionErm, I was sure there was already a thread about this before but I couldn't find it, perhaps it's deleted or something. So I'm asking this again. I …

    ... because it just say insufficient memory (or something, I can't ... apps to external storage will free up some internal memory for more ... able to move apps to external storage, I've never used ...
    ccowley ccowley September 2014 Chit chat
  • AGD Forground blocks/spritesHi Guys Just wanted to ask if it was possible to have foreground or non transparent blocks in AGD 4.5 so that a character would look like he was wal…

    ... way would be to import external graphics routines to do this ... language instructions are represented in memory.
    jonathan jonathan September 2014 Development
  • Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …

    ... bit memory devices - except you expect an error in the external addressing ... test (writing random data to memory) isn't that bad and ... the data written to the memory cell doesn't show any ...
    PokeMon PokeMon September 2014 Hardware
  • ZX81 internal RAM board?Just a quick question to Zorn (amongst others). What would the issues be with fitting one of Zorn's RAM boards into an unexpanded ZX81? Seems to me…

    ... was wondering whether expanding the memory internally would cause any incompatibility ... isolation resistor (R2), so any external device that includes RAM and ...
    1024MAK 1024MAK October 2014 Hardware
  • Please explain Spectrum FPGA-clones to meI've been using the great ZXDS-emulator on the DS XL so far, which is great. But I kinda missed toying around with hardware. I've tried bidding on a …

    ... drams to form 16k of memory, would that machine merely be ... software stored in non-volatile memory at the beginning. If you ... 'configuration' (not firmware) and the memory it is stored in a ... difference if this 'rom' is external to the package? I suppose ...
    Alcoholics Anonymous Alcoholics Anonymous November 2014 Hardware
  • Multi Multiface: the projectI posted some updates on Facebook yesterday about the development of the Multi Multiface, but here is the right place to share all technical findings…

    ... multiinterface use big sram memory and memory mapping is reconfigurable from ZX ... rom can be used different memory paging. For example it can ... memory or new extended model with more points. Interface use own external ...
    velesoft velesoft November 2014 Hardware
  • Multi Multiface: the projectI posted some updates on Facebook yesterday about the development of the Multi Multiface, but here is the right place to share all technical findings…

    ... models, also +2A/+3. Sram memory 512kB, Flash eprom 512kB - full ... is possible implement also divide memory or all multiface models. Ideal ... for any interface based on external memory/joystick.

    [IMG]http ...
    velesoft velesoft November 2014 Hardware
  • Multi Multiface: the projectI posted some updates on Facebook yesterday about the development of the Multi Multiface, but here is the right place to share all technical findings…

    ... . For example will possible connect external +3e rom...
    - full compatibility ... allram mode)
    - can disable external memory on next connected devices (next ... )
    - emulation of DIVIDE 512kB memory (classic divide, divmmc, divide plus ...
    velesoft velesoft November 2014 Hardware
  • Multi Multiface: the projectI posted some updates on Facebook yesterday about the development of the Multi Multiface, but here is the right place to share all technical findings…

    ... samples can be read from memory and outputted to the DAC ... DMA transfers and data from external sram can be via DMA ...
    velesoft velesoft November 2014 Hardware
  • Early thoughts about creating a text adventureSo I always wanted to create my own ZX Spectrum text adventure. I tried looking at PAWs and GAC, but frankly I'm probably too stupid to use them. I…

    ... graphics, in order to conserve memory. So you won't be ... are some games that use external calls from PAWS to load ...
    Strident Strident December 2014 Development
  • Marvin on Android tabletIn portrait mode the keyboard seems way off (testing Shockway Rider in 128K) pressing compared to where the button graphic is. Also got the same joyp…

    ... the external SD card. I try to keep the internal memory as ...
    Vertigo Vertigo December 2014 Emulators
  • New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…

    ... support own allram modes with external memory sram (with selectable write protect ...
    velesoft velesoft December 2014 Hardware
  • Is there any reason whya ZX Spectrum, could not be the platform for a new mathematical or scientific discovery?

    ... of memory unless you do lots of fiddly paging out to external ...
    guesser guesser January 2015 Development
  • Slow BrowsersI'm getting fed up with web browsers. I've been jumping from Firefox, to Chrome, then back to Firefox and even to Internet Explorer but still am expe…

    ... . I think it must have memory leaks, if too many tabs ... 3 drives and 3 TB external via USB 3 over 3 ...
    Scottie_uk Scottie_uk January 2015 Chit chat
  • New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…

    ... flash eprom. Compatibility with MB02+ memory.

    Add through connector ... DIVMMC interface. Add possibility inhibit memory of external devices.

    Development ...
    velesoft velesoft January 2015 Hardware
  • HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…

    ... state? (that is: repeated memory reads). Or does it perform ... only, without actually reading the memory.
    [*][I]If[/I] ... one [I]could[/I] construct external hardware that changes the opcode ... about one tiny detail: the memory location fetched repeatedly, is ...
    RetroTechie RetroTechie February 2015 Development
  • HALT: Why always 4ts?Instruction breakdown of halt is like that: PC 4ts. That means it fetches instruction byte from ram which tooks 4 ts and then does nothing and read…

    ... state? (that is: repeated memory reads). Or does it perform ... only, without actually reading the memory.
    [*][I]If[/I] ... one [I]could[/I] construct external hardware that changes the opcode ... about one tiny detail: the memory location fetched repeatedly, is ...
    TonyB TonyB February 2015 Development
  • New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…

    ... memory managment. Work only as external zx rom, allram device, mb02 memory, divmmc memory ...
    velesoft velesoft March 2015 Hardware
  • Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…

    ... an emulator that can trigger external events. My initial thought for ... have the option to play external soundFX.
    I know the ... an event in the code/memory (collisions, appearances, bonus, missiles etc ...
    Paul-J Paul-J June 2015 Emulators
  • Happy 30th birthday Amiga!A few days late but never mind. The first computer I could call my own, I have fond memories of the Amiga500 with Batman pack. For some reason I …

    ... .
    Added extra half meg memory in the trapdoor and then ... 120mb drive + 4mb to the external port.
    Played lots of ... with many hard drives and memory expansions - 4mb, 4mb+020, 8mb ...
    MatGubbins MatGubbins July 2015 Chit chat
  • ZX-Assembler version 0.8 (beta) releasedDear readers, yesterday I've published ZX-Assembler in its first version 0.8. It offers you some interesting features, even if I know there are …

    ... . A graphical list of the memory map, showing you black boxes ... , or loading one from an external file, only affects your editor ...
    clausjahn clausjahn July 2015 Emulators
  • External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…

    ... my memory / concentration, I'm going quite slowly! I remember the external ...
    Graham Graham August 2015 Hardware
  • Code structureHi all, I'd be interested in opinions on the neatest way to do this. I've got a print string routine in which 0-31 are reserved for control codes, …

    ... and all the modules reference external global variables that make ... DX, reusing the same memory area was necessary because the ... It even includes a full memory map to help understand where ... beginning of program in contended memory, so the entire program ...
    Einar Saukas Einar Saukas August 2015 Development
  • Are all paid for Emulators problematic?Recently I've made a donation of $21.57 Australian dollars or ten pounds for the ZXSpectrum4.net by Tim Butler and Richard Butler, so to register for…

    ... , divide and other external addons etc.), not just memory contents. Pretty much ...
    Arda Arda September 2015 Emulators
  • 48k not startingHi team, I have 2 48k's, one works (Issue 4s), one doesn't (Issue 4a). The non-working one appears to start, but not finish the RAM test. The pape…

    ... of the lower and upper memory chips (some 0.5V and ... ordered the parts for the external ROM and a replacement ZTX450 ...
    neillsun neillsun September 2015 Hardware
  • External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…

    ... 2, and have built an external Z80 CPU on a prototype ... screen similar to those showing memory problems when plugging it in ... /BUSACK not connected. On the external CPU I've connected /NMI ...
    Graham Graham September 2015 Hardware
  • IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…

    ... immediately identify which pages are memory (and therefore cached) and ... the z80 design since the external clock was higher than, eg ... is tied directly to memory speed and memory speed fell behind ... . Any processor with virtual memory is unsuitable for the most ...
    Alcoholics Anonymous Alcoholics Anonymous September 2015 Hardware
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