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  • What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…

    ... not) block from tape into RAM I can embed in my ...
    na_th_an na_th_an October 2013 Development
  • Addresses in Fuse debuggerFrom Fuse man page: [I]Addresses can be specified in one of two forms: either an absolute addresses, specified by an integer in the range 0x0000 t…

    ... is currently paged into memory. RAM pages are indicated simply by ... />
    br 7:0x000F
    (RAM bank 7 and offset 0x000F ...
    TK90XFan TK90XFan October 2013 Emulators
  • Another vertical scrolling questionwhile talking about w256 x h128 vertical scrolling, are 128k modes have any advantages over 48k models? has extra ram or swappable screen buffer any…

    while talking about w256 x h128 vertical scrolling, are 128k modes have any advantages over 48k models?

    has extra ram or swappable screen buffer any use on scrolling?
    Arda Arda October 2013 Development
  • Use PLAY without the 128 ROMHere's a little thing I wrote called SoftPLAY: [url]http://www.worldofspectrum.org/forums/showthread.php?t=45259[/url] Now you can use the PLAY comm…

    ... of the ROM command in RAM. The timing values may be ...
    chev chev October 2013 Sinclair Basic
  • Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…

    ... I connected a Cheetah 32K RAM expansion, Print Peek 23733 showed ...
    schombi schombi October 2013 Hardware
  • Question about 48K DRAM refreshHi guys. Can anybody tell me how the 48K spectrum refreshes the upper ram. RAS only? CAS before RAS? I've got a bunch of 41256 DRAM that i would lik…

    ... 48K spectrum refreshes the upper ram. RAS only? CAS before RAS ...
    Rorschak Rorschak October 2013 Hardware
  • SkoolKit 3.6SkoolKit 3.6 has been released. In case you are unaware, SkoolKit is a set of command line utilities (written in Python) for disassembling Spectrum …

    ... .e. a snapshot of the RAM as it would be immediately ...
    SkoolKid SkoolKid November 2013 Announcements
  • I've had better nights...So I got a broken issue 2 today, case in good nick but the diags board showing multiple failures in both lower/upper RAM. Never mind, good as a spare…

    ... failures in both lower/upper RAM. Never mind, good as a ... failures in previously good lower RAM and a pattern exhibiting a ... I can perform on lower RAM in the future out of ...
    balford balford November 2013 Hardware
  • 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…

    ... . Even write-protected, battery backed RAM would do the job.
    RAM paged modes, and the lockout ...
    u6c87 u6c87 November 2013 Hardware
  • Spectrum Missing -5vMy Spectrum is "almost" booting, just when you expect the (C) 1982 Sinclair Research to appear it just displays flashing squares on the screen :( I …

    ... basic checks and the 4116 RAM seems to be missing it ...
    OttO OttO November 2013 Hardware
  • 128k programmingOk, I have had the normal man look (ie. not really), I want a good resource for 128k asm programming. Mostly just to find out how the RAM bank switc…

    ... to find out how the RAM bank switching works and the ...
    Kiwi Kiwi November 2013 Development
  • ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…

    ... /> When i check signal with oscilloscope on X1 or on ULA ...
    gottrek gottrek November 2013 Hardware
  • Ben Versteeg's November sales[COLOR="Blue"][B][SIZE="6"]Almost ready[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophet…

    ... DSDD drive (800KB)
    - 6116 ram and v2.2 rom
    - 6116 ram chip + v2.2 rom: ?8 ...
    bverstee bverstee November 2013 Sales
  • Power consumption improvementsHi all, Having just received lower and upper RAM replacement modules from Zorn, I thought I'd perform some current draw measurements to see how much…

    ... just received lower and upper RAM replacement modules from Zorn, I ... type. Next the RAM:

    Recom + Lower RAM module: 260mA
    Recom + Both RAM modules: 210mA
    balford balford November 2013 Hardware
  • a few questions1. When will emulators use pc vga capabilities to emulate the uhf tv output accurately including phosphoric delay and crosstalk synchronization 2. W…

    ... their own processors - fdd3000 64kb ram and 4MHz80 micro command P ...
    morcar morcar November 2013 Sinclair Miscellaneous
  • Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…

    ... 580-585 mA. The Fruitcake RAM tester stopped showing a fault ... a ITT). Now the Fruitcake RAM tester gives a DIFFERENT faulty ...
    Falco-F8L Falco-F8L December 2013 Hardware
  • Black Screen Spectrum 48kWas working ok, it came to me in a Fuller FDS keyboard, I had a nose inside and found a floating power lead connected to the keyboard, I removed that…

    ... ...

    Update: #2 Lower RAM chips have voltage at:
    OttO OttO December 2013 Hardware
  • Gaming Pc - advice appreciatedI don't know much about modern gaming PC requirements (the last time I pushed a PC to the limit with a game was trying to play Microprose GP2 on a 48…

    ... a 486 with 8mb of RAM), but my dad is looking ... think the hard drive and RAM are both too low, but ...
    MattLamb MattLamb December 2013 Chit chat
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... /> dw 6912
    db 1 ; RAM 1
    dw 49152
    dw 14729
    db 3 ; RAM 3
    dw 49152
    dw 14819
    db 4 ; RAM 4
    dw 49152
    dw 14555
    db 6 ; RAM 6
    dw 49152
    db 0 ; main code (across RAM 5, 2, 0)
    dw ...
    Zup Zup December 2013 Development
  • Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…

    ... /> 1. A fault in upper RAM causing incorrect instructions to get ...
    Winston Winston December 2013 Hardware
  • Custom Built PC questionsMy old stock Compaq Presario is showing signs of old age and i'm looking into getting a new faster PC this one i'm using is nearly 4 years old and to…

    ... to what CPU, amount of RAM and graphics card i would ... whats a decent amount of RAM for those. I'm also ...
    festershinetop festershinetop December 2013 Chit chat
  • Woo! My Omate TrueSmart arrivedVery cool gizmo - I kickstartered it, so wasn't actually very expensive. Though I'm kicking my_self_ for not going for the bigger RAM model. Will it…

    ... not going for the bigger RAM model.

    Will it ...
    Gedlion Gedlion December 2013 Chit chat
  • About how z88dk generates code and makes room for variables.When you attempt to code games for the 128K models using z88dk in C you need to somewhat control where variables are stored in memory. I thought tha…

    ... I was paging in different ram pages, but as they are ...
    na_th_an na_th_an January 2014 Development
  • 128k gamesHi. I've come to World of Spectrum for advice. I'm a Commodore guy OK, please be nice to me, as I seek your wisdom! I love the Commodore 128, and I'…

    ... with a lot of extra RAM, and you can achieve a ... with a lot of extra RAM and some modest hardware improvements ... possible by having the extra RAM? Any specific examples or comparisons ...
    dryjoy dryjoy January 2014 Games
  • MISTER BEEP - the NEW ZX48 album 2014 "Chromospheric Flares"Hi mates. So. Here it is. Something like 2 years after the previous one - here is my new ZX Spectrum album "Chromospheric Flares". [img]http://mi…

    ... /> Timex Computer 2048 (48K of RAM).

    Tracklist:
    01 ...
    Mister Beep Mister Beep January 2014 Announcements
  • Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…

    ... the result of 32768. Aha. RAM fault.

    I did ...
    namtip namtip January 2014 Hardware
  • New Z88 owner, but what now?Just scored a Z88 off eBay for something like ?36. It's working, has a 32k RAM pack and a "SpellMaster" cartridge. I bought it out of curiosity as I …

    ... 's working, has a 32k RAM pack and a "SpellMaster" cartridge ...
    JonB JonB January 2014 Sinclair Miscellaneous
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... ), with the result that the RAM chip which contains the display ...
    Hikaru Hikaru January 2014 Development
  • Instantish load options for snapshots on HW?Hello All, I am after some advice if I may! I have a Spectrum 48K & IF2 (RAM Turbo), and a Spectrum+ & IF1. I would like to play the Ultimate game…

    ... a Spectrum 48K & IF2 (RAM Turbo), and a Spectrum+ & ...
    Korinel Korinel January 2014 Sinclair Miscellaneous
  • Opus Discovery 1I guess this has been asked before, I have an opus discvery 1, it seems to be working but I would like to fit 2 double sided 3.5" 80 track drives, oh…

    ... 2D. I have fitted the RAM chip so far as I ...
    Zaphod Zaphod January 2014 Hardware
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