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  • Games only possible in 128K mode?In the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?t=30145[/url] the discussion of 128K only games comes up, and it made me w…

    ... have a huge, really huge map. You could replicate this with ... /> But that's a purely RAM-related feature which you have ...
    na_th_an na_th_an July 2010 Games
  • After-Christmas mapsCavelon [url="http://maps.speccy.cz/map.php?id=Cavelon"]http://maps.speccy.cz/map.php?id=Cavelon[/url] Doombase [url="http://maps.speccy.cz/map.php?…

    ... least 4GB RAM like me, you will open the map in Firefox ... .

    Unfortunately with 1GB RAM some browsers have problems to ...
    Pavero Pavero July 2010 Support files
  • After-Christmas mapsCavelon [url="http://maps.speccy.cz/map.php?id=Cavelon"]http://maps.speccy.cz/map.php?id=Cavelon[/url] Doombase [url="http://maps.speccy.cz/map.php?…

    But it's funny that there is necessary to have gigabytes RAM in your PC to open a map for a game, which can run under Speccy with 48KB RAM :-).
    Pavero Pavero July 2010 Support files
  • Did the average Spectrum programmer really even try?I've been thinking about this recently, I'm always hearing Amstrad, and MSX users moaning about how unfair it was that they got "lazy Spectrum ports"…

    ... even maintains the spectrum attribute map in ram and has a big ...
    AndyC AndyC July 2010 Games
  • Biggest Game World?We all know that Elite was considered to be huge with it's 2000-odd star systems, and that Explorer was... well, crap with it's billions of locations…

    ... Spectrum SE ... it has enough RAM for a single-load and ... standard speccy, but the viewable map area is 22x22 cells and ...
    chev chev August 2010 Games
  • ZX Spectrum 16k or 48kHey all, Quick question, is there a simple way to see if my ZX is the 16k or 48k version? Many thanks

    There is system variable P_RAMT (23732, 2 bytes), which shows amount of physically available RAM. So PRINT PEEK 23733 will show 127 for 16K and 255 for 48K.
    Shiru Shiru August 2010 Hardware
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... third 16K page, so the RAM test that the ROM performs ... of your log that the PEEK test didn't give you ... 16K result. If your PEEK was PEEK 23732+256*PEEK 23733, it should ...
    mcleod_ideafix mcleod_ideafix August 2010 Hardware
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... removed and replaced the upper RAM, possibly fitting sockets, and possibly ... .

    From memory the peek test gave the 16K result ...
    Womble Womble August 2010 Hardware
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... version as it uses the RAM disk on the 128K Spectrum ...
    110 LET CHARS=PEEK 23606+256*PEEK 23607: LET CHARS=CHARS ... ;a
    145 POKE DTOP,PEEK CHARS
    150 LET DTOP ... +1
    155 POKE DTOP,PEEK CHARS
    160 LET DTOP ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • WTF stupid machine10 LET X = 28672 or 61440 depending on how much memory you have 20 LET A$ = ?? 30 IF A$ = ?? THEN INPUT A$ 40 LET Y = CODE A$ ? 48:IF Y>9 THEN LET Y …

    ... the end of the memory map.

    So, I'd ... do:
    For 16K RAM:
    10 CLEAR 24999: LET ... =25000

    For 48K RAM:
    10 CLEAR 39999: LET ...
    mcleod_ideafix mcleod_ideafix October 2010 Sinclair Basic
  • The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …

    ... only has 64K of RAM (named Work RAM), use it carefully ... />
    The display RAM (aka VRAM short for VDP ... of the playfield character map in VRAM. The memory ... add the new character map codes to the top ... filling the whole map. An example character map for a ...
    ASM ASM October 2010 Sinclair Miscellaneous
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... BYTES of the Z80 memory map. It is impossible for zx232 ... upload the entire Z80 memory map:

    zx232 /u 64K ... /> ; *MUST EXECUTE IN NON-CONTENDED RAM*
    ; *CORRUPTS REGISTER 7 OF ...
    ASM ASM October 2010 Hardware
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... BYTES of the Z80 memory map (65024 to 65535) are used ... of the full Z80 memory map from 0 to 65535. I ... . I must add a clear RAM function as the downloader should ... /> ; *MUST EXECUTE IN NON-CONTENDED RAM*
    ; *CORRUPTS REGISTER 7 OF ...
    ASM ASM October 2010 Hardware
  • BBC microDoes anyone have a bbc micro? Thanks

    ... word?
    Shadow RAM shadows the screen RAM, allowing the screen ... memory.
    Sideways RAM is RAM in the sideways ROM ... the memory map.

    More technically, shadow RAM appears in ...
    Even more technically, shadow RAM appears in memory at & ...
    Jonathan Harston Jonathan Harston October 2010 Wanted
  • BBC microDoes anyone have a bbc micro? Thanks

    ... word?
    Shadow RAM shadows the screen RAM, allowing the screen ... memory.
    Sideways RAM is RAM in the sideways ROM ... the memory map.

    More technically, shadow RAM appears in ...
    Even more technically, shadow RAM appears in memory at & ...
    Alien 8 Alien 8 October 2010 Wanted
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... (Harvard architecture).
    The data RAM has memory protection.
    Only ... of sync with the opcode map:

    [URL=http://img819 ...
    ASM ASM October 2010 Development
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... WRKRAM 0x00000000 ~ 0x001EFFFF 0x001F0000 Work RAM.
    HWBASE 0x001F0000 ~ 0x001FFFFF ... 0x001F8000 ~ 0x001F9FFF 0x00002000 Playfield 0 map.
    PF1MAP 0x001FA000 ~ 0x001FBFFF ... 0x00002000 Playfield 1 map.
    PF2MAP 0x001FC000 ~ ...
    ASM ASM October 2010 Development
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... 0x00000000 - 0x001EFFFF = 1984K of user RAM
    ; 0x001F0000 - 0x001F7FFF = 32K ... mov r4,[sc0yof]
    bsr .map

    mov ... mov r4,[sc1yof]
    bsr .map

    mov ... incbin "level0.map"
    map1 incbin "level1.map"
    map2 ...
    ASM ASM October 2010 Development
  • Whole upper memory lostHi! I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model with workin…

    ... POKE 32768,0 and then PEEK 32768 and i got value ... that and gave PRINT PEEK 23732+256*PEEK 23733 and it printed ... RAS/CAS circuit inside the RAM, or the tri-state condition ...
    mcleod_ideafix mcleod_ideafix October 2010 Hardware
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    Hi Dr. Beep,

    OK, knocked up the following based on your proposal. Code works but has not been reviewed/optmised yet.

    [CODE]100 CLEAR 65446:
    BORDER 1:
    PAPER 1:
    CLS :
    GO SUB 260
    110 REM ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... /> 230 REM Copy Numbers to RAM and
    240 REM add ... *------------------------*
    260 LET CHARS=(PEEK 23606+256*PEEK 23607)+(CODE "0"*8 ... TO 79: POKE NUMS+A,PEEK (CHARS+A): IF A
    Dr BEEP Dr BEEP October 2010 Sinclair Basic
  • Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …

    ... /> 170 REM Copy Numbers to RAM and
    180 REM add ... *------------------------*
    200 LET CHARS=(PEEK 23606+256*PEEK 23607)+CODE "0"*8 ... 79:
    POKE NUMS+A,PEEK (CHARS+A):
    IF A
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... ; Origin at start of uncontended RAM.


    ; --------------------------------------------------------------------------



    ; Keyboard map
    ;
    ; 254 V C ...
    ASM ASM October 2010 Development
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... snapshot the entire 128K memory map.

    I cannot comment ... ... it has 8K of internal RAM but still uses some clever ... how to use that extra RAM but that paper as long ... so you could save the RAM... my method is generic for ...
    ASM ASM November 2010 Sinclair Miscellaneous
  • 48k Out of memoryIv just had a 48k Speccy arrive today. The keyboard wasnt working right so I changed that. Now when I tried to load Cyclone it started to load ok fo…

    ... :[/QUOTE]

    bad upper ram? meaning that it's effectively ... you can poke and peek to test the ram, I'm sure ...
    guesser guesser November 2010 Hardware
  • New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…

    ... - Sabre Wulf etc.

    RAM paging mode 4 5 6 ... BYTES of the Z80 memory map. In theory this system should ... de
    out (c),l ; RAM page select

    ld ...
    ASM ASM November 2010 Announcements
  • 48k Out of memoryIv just had a 48k Speccy arrive today. The keyboard wasnt working right so I changed that. Now when I tried to load Cyclone it started to load ok fo…

    ... off the shelf replacement RAM but you have to ... work out what type of RAM your Spectrum currently has. ... the upper 32K of RAM. Each RAM chip holds one bit ... two of the eight RAM chips require replacing so ... /> POKE 32768, 255 : PRINT PEEK 32768
    You should get ...
    BloodBaz BloodBaz November 2010 Hardware
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... .

    [CODE]LET d=PEEK 23766: LOAD *"m";d;"v2 ... fit then into the game ram without causing corruption. It's ...
    Arda Arda November 2010 Sinclair Miscellaneous
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... ; Origin at start of uncontended RAM.


    ; --------------------------------------------------------------------------



    ; Keyboard map
    ;
    ; 254 V C ...
    sekrets sekrets November 2010 Development
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... ; Origin at start of uncontended RAM.


    ; --------------------------------------------------------------------------



    ; Keyboard map
    ;
    ; 254 V C ...
    ASM ASM November 2010 Development
<1…14151617181920…34>

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