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Search Again :: Adv Search 1000 results in 0.014s
<1…15161718192021…34>
  • 48k or 16K ?Hi All Something I do not recall, how do you tell a 48k rubber key Spectrum from a 16k ? Thanks for reading

    ... have a 48 with dodgy RAM, the 16K's reset sequence ... 40000,0
    20 PRINT PEEK 40000[/code]

    If ... 16K (or it has dodgy RAM).
    chev chev December 2010 Hardware
  • 48k or 16K ?Hi All Something I do not recall, how do you tell a 48k rubber key Spectrum from a 16k ? Thanks for reading

    ... have a 48 with dodgy RAM, the 16K's reset sequence ... 40000,0
    20 PRINT PEEK 40000[/code]

    If ... 16K (or it has dodgy RAM).[/QUOTE]

    Hi Ya ... , so my assumption is bad ram or possibly loose chips, as ...
    Chris A Chris A December 2010 Hardware
  • ZXC3 Rom CartridgeI recently aquired a ZXC3 Cartridge Rom from [URL="http://www.fruitcake.plus.com/"]Paul Farrow[/URL] fully populated with the latest diagnostic softw…

    ... ]yes but you can only map 16k into the speccy's ... transferred to the Speccy's ram.
    zxbruno zxbruno December 2010 Hardware
  • ZXC3 Rom CartridgeI recently aquired a ZXC3 Cartridge Rom from [URL="http://www.fruitcake.plus.com/"]Paul Farrow[/URL] fully populated with the latest diagnostic softw…

    ... ]yes but you can only map 16k into the speccy's ... data from different blocks into RAM (and registers) and then switching ... Emulation (uses top 16K of RAM) all on a lowly 48K ...
    BloodBaz BloodBaz December 2010 Hardware
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... now resides in contended RAM. Also have my heap ... data in contended RAM too. In high RAM, I have the ... internal data (namely the map of the current level). ... calculate more precisely how much RAM this would need, and ... make better use of RAM in the next project ...
    Digital Prawn Digital Prawn December 2010 Development
  • Upgrading 16k MemoryHi All I have a fully working issue 2 16k spectrum and a broken issue3 48k spectrum (It's showing the black and white bars and some flashing blocks)…

    ... was booting. I added the RAM ICs one at a time ... 48k. I did a "PRINT PEEK 23732 + PEEK 23733* 256" and the ... well the ROM tests the RAM when it boots. I loaded ... hold off or the static ram IC that I could solder ...
    wozname wozname December 2010 Hardware
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... />
    [quote]
    In high RAM, I have the ISR table ... br />
    The default memory map is in [URL="http://z88dk ... generate preshifted graphics in available RAM. Whether or not this actually ... for its array. sp1_Initialize() will map the new array to a ...
    Alcoholics Anonymous Alcoholics Anonymous December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... the game loop. For example, map data or compressed static screens ... lives poke is in contended RAM, how embarrassing :D )

    map bytes down to nybbles and ... have exactly the same level map represented in the second game ...
    Digital Prawn Digital Prawn December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... x 96 bytes: 2K
    Map: 2.5K
    5 sprites ... animated monster or somewhat larger map.

    [QUOTE]I will ... of the new stdio (treat ram as a ramdisk with seek ...
    Timmy Timmy December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... enters a new screen (so map data can be updated, and ... , sprite, and map data from other RAM pages to main ram buffers so ...
    na_th_an na_th_an January 2011 Development
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... creating more levels when the RAM filled up.

    Yesterday ... (in the SP1 library memory map) where I can store my ...
    Digital Prawn Digital Prawn January 2011 Brand new software
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... levels in the available free RAM (really due to the inefficient ... separated 'objects' from the level map) such that each wall or ... space in the level map data now only occupies a ...
    Digital Prawn Digital Prawn January 2011 Brand new software
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... like looking at Pavero's map of the game, it shows ... to design the main game map yet).

    I now ... up quite a bit of RAM, due to technical reasons.
    Digital Prawn Digital Prawn January 2011 Brand new software
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... 0x0000, LENGTH = 0x4000
    ram (!rx) : ORIGIN = 0x6000, LENGTH ... br /> *(.data)
    } > ram
    .bss : {
    _bss = ... _ebss = .;
    } > ram
    }
    [/code]
    ... LDFLAGS = --oformat binary -Map 48.map --script 48.lnk
    ...
    tstih tstih January 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... z80 implementation and tbh 48k ram is very tight for what ... blocks from around the memory map to be added to heap ... translation table and hooks into RAM (i.e. rewiring IM1 vector ... this part will be in RAM - but it should be relatively ...
    Alcoholics Anonymous Alcoholics Anonymous January 2011 Development
  • BASin Problems etc.Hi Folks, Paul has asked me to open this thread to document any outstanding issues that we find within BASin. No guarantees that Paul can/will fix …

    ... causes BASin to crash
    [*]PEEK 23556 always returns 255
    RAM disk
    [*]Repeated access to ... the 128K RAM causes BASin to crash[/LIST ...
    Paddy Coleman Paddy Coleman January 2011 Sinclair Basic
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    ... -2: RAM bank (0-7) to page into memory map at $C000 ...
    jp jp January 2011 Games
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... I'm thinking how to map extended combinations to actual symbols ... I can map certain combinations to basic or even ram configurable unix ...
    tstih tstih February 2011 Development
  • Saving space...Hi Folks, Looking for ways to save some memory in a program I am writing. In a number of places I have the following code: [CODE]xxxx PAUSE 1: …

    ... properly on high ram, and then read it using PEEK.

    RAM.

    [code]10 DATA ... just

    [code]PRINT PEEK address + 2[/code]
    na_th_an na_th_an February 2011 Sinclair Basic
  • New To Group....Hi All, A quick introduction as this is my first post. I am a Scarborough, UK based chap who is quite heavily into retro computing, more specificall…

    ... be quite unusual for a RAM chip to only be ... br />
    then
    PRINT PEEK 16384

    Next try ... />
    then
    PRINT PEEK 16384

    If you ... back in the first PRINT PEEK, and 0 back in ... the second PRINT PEEK, then it's not ...
    Winston Winston March 2011 Hardware
  • +2: 128k enhanced games no longer loading (but OK in 48k mode) :-/Having a spot of bother with my +2, a couple of my favourite games are now refusing to work in standard "Tape Loader" based 128k mode - Marauder (Hew…

    ... you could then check the RAM in 49152-65535, although anything ... /> 30 POKE x,0:IF PEEK x0 THEN PRINT x:GO ... /> 40 POKE x,255:IF PEEK x255 THEN PRINT x
    Jmk Jmk March 2011 Sinclair Miscellaneous
  • Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …

    ... only got 16K of fast RAM instead of 32K.

    map. Nevertheless, it can do a ...
    joefish joefish March 2011 Development
  • VIC-20 MegathreadWasn't the VIC-20 just a top machine? Discuss.

    ... VIC 20 could do bit map images. The VIC chip was ... basic. In the day 64K Ram Packs were available.

    Alien 8 Alien 8 April 2011 Chit chat
  • I cant get this listing to run!Ive read this through so many times my eyes are misting up! [url]ftp://ftp.worldofspectrum.org/pub/sinclair/magazines/DUC/Issue08/Pages/DUC0800039.jp…

    ... the contents of the 6116 RAM.
    Anyway, all pointers now ... BREAK then, for simplicity. Now PEEK HL should give 40, the ...
    roko roko April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... you can get back the RAM when you're not using ... ): DEF FN p(a)=PEEK a+256*PEEK (a+1):
    DEF ...
    chev chev April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... to/from free RAM or copy chunks of RAM around quickly ... two different segments of free RAM).

    What FN ... DEF FN p(a)=PEEK a+256*PEEK (a+1):
    ... FN d(a)=PEEK a-(64 AND PEEK a>127 ... COPY string to RAM or RAM to string or RAM to RAM
    LET ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... string function to the free RAM pseudo-string a$ (eg. at ... , if a$'s chunk of RAM is above (but outside) VARS ... free RAM as strings it took 8 seconds; using a PEEK/POKE ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Load! Screen$ questionI've got a basic program listing in BASIN which among other things recalls a screen via Load! (I've Save!'ed a screen into memory before hand). How d…

    ... not stuff saved in extended RAM; and saving SCREEN$ would have ... stkend=PEEK 23653+256*PEEK 23654:
    LET ramtop=PEEK 23730+256*PEEK 23731 ... :
    LET chans=PEEK 23631+256*PEEK 23632 ...
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…

    ... DEF FN p(a)=PEEK a+256*PEEK (a+1):
    DEF ... POKE nl+5,FN d(PEEK da): POKE nl+27,FN ... d(PEEK (da+9)): LET dm=da ... +29 STEP 22:
    IF PEEK dm
    Battle Bunny Battle Bunny April 2011 Sinclair Basic
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... ). And I based my memory map for the game around this ... memory (the first bit of RAM straight after the attribute file ...
    Digital Prawn Digital Prawn April 2011 Brand new software
<1…15161718192021…34>

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