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<1234567…34>
  • Strange behaviour in very simple ASM program.Someone sent me this and it shows something strange. Here's the BASIC listing [code] 10 CLEAR 32999 20 FOR n=33000 TO 33009 30 READ a: POKE n,a …

    Doesn't +2A initialise memory with a different pattern during ... startup? Examine the free memory just beyond the end of ...
    colonel32 colonel32 October 2017 Development
  • Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…

    ... is where the screen memory resides. The screen memory ends at 23296 ... is what on earth the memory before KSTATE and after the ... video memory is used for on a ...
    cyborg cyborg November 2002 Sinclair Miscellaneous
  • 16k spectrum crash?Hi, I have just been given a spectrum 16k. I plugged it in and it worked, but after turning the machine off and connecting the 32k (cheetah) memory …

    ... 32k (cheetah) memory extension it now won't re-initialise on start ...
    eset eset February 2003 Sinclair Miscellaneous
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... />
    Port 32765 controls the memory paging. Bits 0-2 determine ...
    trellis trellis August 2003 Sinclair Basic
  • ZX80/81 memory expansion and 48k + Lightpen for saleAll are in original packaging and the lightpen has it's software and manual. The memory expansion is a 16k one. E-mail me at [email="patrick@wych01…

    All are in original packaging and the lightpen has it's software and manual.

    The memory expansion is a 16k one.

    E-mail me at [email="patrick@wych01.freeserve.co.uk"]patrick@wych01.freeserve.co.uk[/email] if intrested..
    zeropolis79 zeropolis79 September 2003 Sales
  • memory is filled up under Win XP when opening many filesDear friends, I have the big and strange problem that ZX-Rainbow's game scanner is not working properly under Windows XP. I figured out (during a ti…

    ... in the virtual memory), so that the memory is filled up with ... the file stream, freeing the memory.
    I wrote another testing ... the complete file content in memory.

    The problem does ...
    Seejay Seejay April 2004 Development
  • Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…

    ... /> If so, what are the memory areas available for 16k and ...
    robpearmain robpearmain May 2004 Development
  • Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…

    ... why the Spectrum's video memory has such a strange layout ... it easier to address video memory. I also understand that the ... ) are a compromise to limited memory. But where does the line ...
    J?rg Pleumann J?rg Pleumann August 2004 Sinclair Miscellaneous
  • what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…

    ... from port 7FFD for extra memory pging:
    - for ... those bits for extra memory switching and if it ... / port DFFD for extra memory paging.
    What is ... keep track of a memory bank number, by combining ... established port for extra memory, other than the Pentagon ...
    secarica secarica September 2004 Sinclair Miscellaneous
  • SPIN - debugger / fill memory / how ?I try to fill the screen with 00 value, but I don't get the expected result. - pause the game - debugger - hex numbers - fill memory block - fill wi…

    ...
    - hex numbers
    - fill memory block
    - fill with 00 ...
    - main memory
    - start address - 4000
    - ok
    then
    - view memory
    - all screen data is ...
    secarica secarica October 2004 Emulators
  • Data at the top of memoryWhilst viewing memory locations on the "Spin" emulator I noticed data starting at 65336. Does a "real" ZX Spectrum 48k use the top end of available m…

    Whilst viewing memory locations on the "Spin" emulator I noticed data starting at 65336. Does a "real" ZX Spectrum 48k use the top end of available memory ? If so, what is the last memory location that is safe to use ?
    Mr Millside Mr Millside February 2005 Development
  • Emulator Dev: Memory Use When Loading RZXsHi, I am currently working on a port of an emulator to a system with limited memory (64mb). I am running out of memory when loading large snapshots …

    ... to a system with limited memory (64mb). I am running out ... of memory when loading large snapshots (ie ... let me know how much memory is needed to decompress a ...
    Crabfists Crabfists June 2005 Emulators
  • Interface 1 Memory Map(I'm not sure which section this post should go in, but here seems as good as any) Since the Interface 1 ROM is only 8k long, does anyone know what …

    ... appears in the 8-16k memory range when IF1 is paged ...
    MikeW MikeW May 2006 Hardware
  • Wanted: Gamecube memory cardI'm looking to buy a gamecube memory card. I don't need a large capacity memory card but a card that can save information for upto 3 games will do. I…

    ... looking to buy a gamecube memory card. I don't need ... a large capacity memory card but a card that ... they own or a used memory card (in working condition of ...
    Arjun Arjun May 2006 Chit chat
  • The Rocky Horror Show - Alternate version or just weak memory?Ok, I have a question that has been bugging me all my life... "The Rocky Horror Show" was the first game I have ever played, it was for some reason…

    ... a case of blurry child memory?

    And by the ...
    Fred_PJ Fred_PJ August 2006 Games
  • Emulator with ability to watch memory?Hi! I'm looking for an emulator that can give me a realtime update of an address in memory. I've tried Fuse (on OS X) where I can set a breakpoint i…

    ... update of an address in memory. I've tried Fuse (on ...
    bigredswitch bigredswitch August 2006 Emulators
  • Where do you keep your tape images? CD, DVD, USB drive or Memory Sticks?I have my most beloved games (well over 300 titles) on my SD memory card. What's your type of archive medium?

    I have my most beloved games (well over 300 titles) on my SD memory card. What's your type of archive medium?
    Uros Zupan Uros Zupan September 2006 Sinclair Miscellaneous
  • Memory Map/ContentionHi I'm new to speccy coding (well I did some z80 coding a few years back - like 20yrs ago :) ), and I'd like to get back into writing some scrolling…

    ... this a correct map for memory contention?

    Address Size ...
    5B00-7fff 08k Contended Memory
    8000-FFFF 32k Fast ... Memory (well normal memory really :) )

    Cheers ...
    ZJones ZJones September 2006 Development
  • Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…

    ... ?) behind ULA's spectrum screen memory interpretation?

    6144 bytes ... behind this implementation? Why screen memory isn't interpreted continuously?
    Arda Arda October 2006 Development
  • 128K memory testingDuring a mad half hour I decided to write a little memory tester program in BASIC using the information from the 48K service manual. Now I was wonder…

    ... decided to write a little memory tester program in BASIC using ...
    BruceNorton BruceNorton October 2006 Sinclair Basic
  • My security program doesn't like Spin or Spectaculator?I just tried installing both Spin and Spectaculator, and both of them triggered the security alert on my PC's internet security software. When I tri…

    ... message saying "DirectSound could not initialise, sound is unavailable"

    memory of another process by installing ...
    udgoverload udgoverload January 2007 Emulators
  • Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…

    ... makes me wonder: How much memory does a Speccy have, included ... the memory used by the machine itself ...
    Pilsener Pilsener March 2007 Hardware
  • Issue 1 32K Memory Upgrade neededHi folks, as the title suggest im looking for the original sinclair memory board to make it 48k from 16k. Any other form will do or even instructions…

    ... looking for the original sinclair memory board to make it 48k ...
    ZX-MAD ZX-MAD March 2007 Wanted
  • Install Linux to Memory Card(MMC/SD etc)?For anyone that knows, would it be possible to install Linux to a Memory Card? My new PC has a card reader that supports SD, MMC, MS, SMC, CF and MD…

    ... to install Linux to a Memory Card?

    My new ...
    FrankT FrankT March 2007 Chit chat
  • Fuse for Mac OS X 0.8.0A new version of Fuse for Mac OS X has been released soon or already here at WoS and at the dedicated sourceforge project: [url]http://sourceforge.n…

    ... Pause" feature)
    [*] Do allocate memory if we have no data ... some padding in tzx_read_data()
    [*] Initialise snap->beta_paged (fixes Action ...
    Fred Fred April 2007 Emulators
  • List of POKEs and PEEKs/cool memory addressesI was wondering if there was a list of cool memory addresses to POKE and/or PEEK. For example, I know that PEEK 23674 tells you how long a Speccy has…

    ... was a list of cool memory addresses to POKE and/or ... Spectrum ROM Disassembly', but for memory addresses instead of assembly routines?
    Gizmoguy Gizmoguy April 2007 Sinclair Basic
  • Vague memory of a gameHi all, something's been bugging me on and off for ages. I once had a speccy game that I can't remember the name of. Sadly I can't recall many of the…

    ... a bit hazy, but my memory isn't what it was ...
    LarryLaffer LarryLaffer April 2007 Games
  • Laptop memoryIf anybody is interested before it goes on Ebay.... 2 x 512MB Hynix PC2-4200 memory modules Hardly used - I upgraded the memory a couple of days af…

    ... x 512MB Hynix PC2-4200 memory modules

    Hardly used ... - I upgraded the memory a couple of days after ...
    ADJB ADJB April 2007 Sales
  • Running code from the display memory?Is it possible to run machine code from the memory area used by the display file? If you were really out of memory and some part of screen is not u…

    ... run machine code from the memory area used by the display ... you were really out of memory and some part of screen ...
    Rickard Rickard May 2007 Development
  • Disable onboard memoryWould this work...? Access to onboard I/O can be disabled by holding IORQGE high. Would it be possible to create a MEMRQGE in a similar way to disa…

    ... way to disable all onboard memory - like ROMCS but for the ... whole memory map?

    Translating the ... piece of on-board memory and map external memory over it. CP ...
    Jonathan Harston Jonathan Harston June 2007 Hardware
<1234567…34>

Latest Posts

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