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Search Again :: Adv Search 628 results in 0.001s
<1234567…21>
  • ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…

    ... in some cases the resistors (R1..R8) that separate ULA/lower RAM ... minimum. Both for NMOS and CMOS. Keyword being "should". That said ...
    RetroTechie RetroTechie February 2017 Hardware
  • issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…

    ... to go back to 470ohms R1-R8
    gorski gorski March 2009 Hardware
  • Fast AY PlayerThis is player for ay register dump stream (compiler for PC included). Speed: 980..1067t / 1200..1287t (without pattern change/with pattern change) …

    ... taken for the registers r0,r1,r8 (Channel A variants)/r2,r3 ...
    tmk79 tmk79 November 2010 Development
  • 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…

    ... on both sides of the R1-R8 resistors to differ between ROM ...
    roko roko October 2013 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    Because resistors R1 to R8 "isolate" the data bus into two sections, external devices (like modern CMOS SRAM) can easily override the 4116 DRAM chips data when the CPU performs a read from this address area.

    [b][i]Mark[/i][/b]
    1024MAK 1024MAK August 2016 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    [quote="1024MAK;874538"]Because resistors R1 to R8 "isolate" the data bus into ... sections, external devices (like modern CMOS SRAM) can easily override the ...
    RMartins RMartins August 2016 Hardware
  • Safari probs in a Mac.A friend of mine gets kicked out of Yahoo mail (Safari/Mac) for no apparent reason but gets this error message. Any idea what the problem might be? …

    ... /> ctr: 0x0000000000000000
    r0: 0x0000000001154868 r1: 0x00000000bfffd240 r2: 0x000000000064003d
    r3 ... : 0x00000000bfffd4b4
    r7: 0x0000000001a6ec00
    r8: 0xffffffff5e4e3e2c r9: 0x0000000001a6edc4 r10: 0x0000000000000031 ...
    ZnorXman ZnorXman April 2008 Chit chat
  • Broken keyboard due to broken ULARecalling csmith's thread about dead ULAs, a thread appeared in the Zonadepruebas (Spanish) forum regarding... a dead ULA, but only a partially dead …

    ... hand terminal of the resistors R1-R5 that are used for ... of 74-series TTL or CMOS if you don't have ...
    Winston Winston October 2010 Hardware
  • Dell CMOS batteryHi folks Quick question for the techie types on here. My mum and dad have a Dell Dimension C521 and it needs a new CMOS battery by the looks of thi…

    ... and it needs a new CMOS battery by the looks of ...
    Maroc's Astral Projection Maroc's Astral Projection July 2011 Chit chat
  • Guess the game from magazine illustrationIt's time for another quiz! Below you can see 8 illustrations from Polish magazines. They were printed with game maps. Can you guess the game titles?…

    ... .uk/images/2017/06/04/r1.png[/img]

    2 ... .uk/images/2017/06/04/r8.png[/img]
    PopoCop PopoCop June 2017 Games
  • Digital Joystick on my PCI am sure this subject has been raised before but here I go anyway. I still have my old Kempston style (digital) jotstick that I used on my speccy ag…

    ... ........|...........|...........|.........
    1------------R8-----------------T2........
    ........|...........|...........|.........< ... br /> ........|...........|...........|.........
    ........R1..........R2..........R4........
    ...
    Dr BEEP Dr BEEP April 2002 Sinclair Miscellaneous
  • +3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …

    ... ones are what. :)

    R1,R2,R3 = M820R
    R4 ... ,R5,R6,R7 = M5K6
    R8,R9,R12,R13 = M100K
    KeepGood KeepGood July 2006 Hardware
  • Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…

    ... 0 (R0), 0 to R1, 13 to R8, 62 to R7.
    OUT $fffd,1 ; R1
    OUT $7ffd,0
    OUT $fffd,8 ; R8
    OUT $7ffd,13
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • FAO Winston, Why won't this work?I have redesigned my Flash Rom board, yet again, so that it might perhaps work... any glaring flaws? [IMG]http://alistairsserver.no-ip.org/flash%20…

    ... connected to the inputs, and R1 is replaced by a P ... drain. This is actually a CMOS and gate, but implemented in ... I drew above, or a CMOS AND gate) is actually a ...
    Winston Winston May 2008 Hardware
  • FAO Winston, Why won't this work?I have redesigned my Flash Rom board, yet again, so that it might perhaps work... any glaring flaws? [IMG]http://alistairsserver.no-ip.org/flash%20…

    ... connected to the inputs, and R1 is replaced by a P ... drain. This is actually a CMOS and gate, but implemented in ... I drew above, or a CMOS AND gate) is actually a ...
    guesser guesser May 2008 Hardware
  • +3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…

    ... 1uF
    D1 1N4148
    R1 1.8k
    R2 1 ... 180R
    R7 10k
    R8 10k
    R9 680R
    FrankT FrankT June 2008 Hardware
  • issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…

    ... increase the resistance of resistors R1 to R8 (the data bus separators ...
    Phu Phu March 2009 Hardware
  • issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…

    ... now
    we talk for r1 to r8 ? = [url]http://forest.no ...
    gorski gorski March 2009 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... magazine / WoS Schematics / PCB
    R1-5 -> 2k2 330R 2k2 ... -> 560R 680R 560R
    R8-9 -> 330R 330R 330 ...
    Severino Severino February 2013 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... problem with the Spectranet and CMOS Z80 in the Harlequin was ... because I had soldered in R1 the wrong way around (it ...
    Winston Winston May 2014 Hardware
  • Harlequin 128k??Hi peeps... I've seen that you can do a 128k version of the Harlequin board. Is it just the standard board with different chips or is it a dif…

    ... of the SIL resistor arrays R1, R2 and R13 are in ... without the AY chip. A CMOS CPU should be could a ...
    ingo ingo July 2016 Hardware
  • Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…

    ... the CLIPRECT?
    JR NZ,r1 ; If not keep going
    r1:
    LD (IX+0),A ...
    robpearmain robpearmain August 2004 Development
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... the CLIPRECT?
    JR NZ,r1 ; If not keep going
    r1:
    LD (IX+0),A ...
    robpearmain robpearmain August 2004 Development
  • OT: PC boot solution anyone?A long shot I know, but what the hell! The thing is this: My Asus K8V SE Deluxe mobo seems to be suffering from a problem. Specifically with the BIO…

    ... apparently is to reset the CMOS, which I did. And now ... error during bootup:

    CMOS Checksum error
    CRTC Time ...
    Arjun Arjun October 2005 Chit chat
  • Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…

    ... /> cp 3
    jr nz,r1
    ld a,l
    cp $d0
    jr nz,r1
    ld hl,0
    r1: ld (anglez),hl
    call ...
    xor xor July 2006 Development
  • Resident Evil 4So I got my self Resident Evil for Christmas... and have been sick since the 25...so only yesterday I got the chance to try it... I played all the R…

    ... have the "fire button" on R1... so I found my self ...
    VanTammen VanTammen December 2006 Chit chat
  • The Quest for the holy componentsHi all, I am in the need of the following components for my MB02+. Can any of you guys help me on this as I cannot find in them in my 'areas'. 1 x …

    ... LP621024D-70LL 128K 8 BIT CMOS SRAM

    Anestis
    Anestis Anestis February 2007 Hardware
<1234567…21>

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