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  • Fire Ruby - More HelpI cant pass the spikes in the fire ruby by lawrence creighton, can someone please help? [ This Message was edited by: welsh_brawler on 2003-08-08 21…

    ... .1

    General data
    ------------

    ... DESC

    IN BUS AT 15
    CARRIED 18 ...

    IN BUS PRESENT 31
    NOTCARR 18 ...
    BadBeard BadBeard August 2003 Games
  • Spectrum 128 Graphics - A missed opportunity?The Spectrum 128 is my favourite model of the Spectrum - the pinnacle of the Sinclair miracle before it was hijacked by Amstrad. But I can't help thi…

    ... you couldn't combine the data to form 16 bits - 3 ... just take the two intensity signals from the ULA, DAC them ... to read twice as much data (causing more contention) and probably ... to simply duplicate the RGB signals for both blocks and then ...
    cyborg cyborg February 2004 Sinclair Miscellaneous
  • loading sounds.. and stripes!Yesterday me and a friend started to discuss (after some glasses of wine) about that wonderful sound as coming out though the telly then you load a t…

    ... binary - as they represent digital data. However if you tried to ... low frequency range. Instead the data is outputted as a modulated ... are typical of frequency modulated signals.
    cyborg cyborg February 2004 Sinclair Miscellaneous
  • An MC question (sorry, there's no MC forum to post to!)Ok, still struggling with learning MC - but am getting there. I just can't find anywhere on the web / in books that explains how to do arrays in MC.…

    ... in consecutive memory locations (zero signals end of string).[/quote]
    data.

    [quote]
    It ...
    cyborg cyborg April 2004 Sinclair Basic
  • ZX-BUS?Hmmmm..... While reading Your posts here, I have an impression that various models of ZX Spectrum have various zx-bus ports. Is that true? I knew t…

    ... it has the same zx-bus like original Sinclair's machines ... any of the 'special' Timex signals made it to the edge ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Sinclair Miscellaneous
  • Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…

    ... doesn't have the floating bus. I have tried > 400 ... 't work because of floating bus + port conflict trouble. It reads ... have pull-ups on all data lines, so reading from a ...
    Alcoholics Anonymous Alcoholics Anonymous May 2004 Emulators
  • Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…

    ... and look when the RAM data needs to be read in ... ) and when the data is valid on bus for writing.

    klingler klingler September 2004 Sinclair Miscellaneous
  • building a computerFor some reason having come of age (25 last feburary) I've begun to get the itch to build my on computer, i.e. from scratch, not plug together pc par…

    ... diagrams: these diagrams show how signals change in sequence over time ... cpu, for example, performs certain bus sequences to read from memory ... what goes on in each bus cycle so that you can ...
    Alcoholics Anonymous Alcoholics Anonymous October 2004 Sinclair Miscellaneous
  • Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…

    ... pins properly. Since a bus request is only valid once ... clocks before it needs the bus.

    Sure, ... was a benvolent and cooporative bus master of old, the ... look when the RAM data needs to be read ... ) and when the data is valid on bus for writing.
    ...
    Sparky Sparky October 2004 Sinclair Miscellaneous
  • Sparky eZX-BASIC Project in need of FPGA ExpertYou probably are not familiar with this project, but it is a computer system based on Zilog's new eZ80 chip and the OS is a superset of ZX BASIC. Ju…

    ... the same, arbitrating the bus with the eZ80. It ... shared on the CPU's bus, or completely isolated from ... bus from the display bus as a tradeoff for the bus ... using the 24 bit address bus, or to actually ignore ... project. It brings all signals out to two 80 pin ...
    Sparky Sparky October 2004 Sinclair Miscellaneous
  • How to detect 48k modeHow can you detect if a 128k machine is in 48k mode (from an emulation point of view, not via BASIC or machine code)? Checking the current rom? But …

    ... so could this return screen data?
    [/quote]
    Yes: in ... and it returns the floating bus.
    [quote]
    2) When ...
    Luca Luca March 2005 Emulators
  • Mayhem Accelerator in actionI've put together the first video of the prototype Mayhem Accelerator running on the Sam Coupe. The video shows the Sam running a ZX Speccy emulator …

    ... clock in the card cage / bus interface?
    [/quote]

    signals from the Sam.

    Quazar Quazar July 2005 Announcements
  • IDE harddisk emulation usageNot 'howto' question :) I'm curious about how many people tried it. It exists in Spin, Fuse & RealSpec - in last is most interface supported. 8-bit …

    ... , and also the latching of data which occurs when D8..D16 ... is because i consider all signals to be potentially ringing. An ...
    zilog zilog October 2005 Emulators
  • Externally emulating hardwareThere's been several threads onlong the lines of "can somebody add emulated hardware X to emulator Y"? What would be useful is if emulator writers c…

    ... the expansion bus. Any additional hardware would send its signals to this ... emulated bus. Should work for ... the emulator to scan the bus every cycle though.
    [/quote ...
    piters piters November 2005 Development
  • Externally emulating hardwareThere's been several threads onlong the lines of "can somebody add emulated hardware X to emulator Y"? What would be useful is if emulator writers c…

    ... the expansion bus. Any additional hardware would send its signals to ... this emulated bus. Should work for ... the emulator to scan the bus every cycle though.
    ... signals from different peripherals all coming into the same bus ...
    ADJB ADJB November 2005 Development
  • Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…

    ... wrong by removing the 'floating bus' IN instructions, as described ... rows of 'marker' ATTR data below the play area, or ... , so presumably the 'floating bus' synchronisation code was removed from ... emulators not emulating 'floting bus' correctly can be persuaded ...
    Digital Prawn Digital Prawn December 2005 Emulators
  • ZX-PC InterfaceRight - i'm 34 and I cant take the pain of waiting for tapes to load any more - somethings gotta give ( either the tape deck or me ). I've seen a 'Z…

    ... I don't know which signals the printer port uses, but ... need a way to read signals back. On a PC ... I use the signals that are used to ... is online. I use these signals to make the interface work ... lines from the printerport (4x data, 1x control) then the ...
    Dr BEEP Dr BEEP December 2005 Hardware
  • What is an "Unknown Port"?Port FF is unknown and so can return screen data on a 48k/128k/+2 models. But what if no Kempston mouse is plugged in. Is Port DF classified as unkno…

    ... hardware sometimes returns screen/attr data to detect the end of ... tc2048 uses a resistor decoupled bus like the spec48 did so ...
    Alcoholics Anonymous Alcoholics Anonymous February 2006 Emulators
  • Faster broadband from BT questionHi Got this email from bt about a speed upgrade (up to 8mb) According to the checker they have I should be able to get 6mb, I have 2mb just now. t…

    ... designed for high levels of data transfer. Network cards are.
    bus on the motherboard. That's ...
    Lee Fogarty Lee Fogarty May 2006 Chit chat
  • Spectum expansion port cable extenderI've got a wobbly +D (oo-er) which keeps causing my rubber friend to reset. I'm sure someone must sell cable extenders for the expansion port to com…

    ... onto a grey +2 expansion bus.

    If you use ... add extra capacitance between the data lines, and the problem just ...
    DEATH DEATH May 2006 Sinclair Miscellaneous
  • RealXThis may be a dumb question but will RealX ever get released?

    ... to see that the new data from your friend matches the ... mechanism and all our floating bus tests match the real 48k ...
    Dunny Dunny July 2006 Emulators
  • RealXThis may be a dumb question but will RealX ever get released?

    ... of the ULA's private bus are crossed in the 48K ... to see that the new data from your friend matches the ... mechanism and all our floating bus tests match the real 48k ... us as soon as enough data are available. From the preliminary ...
    Luca Luca July 2006 Emulators
  • Papaya Labs shop open for DivIDE pre-orders.Papaya Labs are now taking pre-orders for DivIDE interfaces and other DivIDE accessories. Find their shop at [url]http://www.papayalabs.co.uk/shop/[…

    ... have unreliable data transfer. It has nothing with power, but bus timing ... accepts commands, but half of data is wrong. Tried different powers ...
    piters piters August 2006 Hardware
  • Games reset sinclair 48k.I am a relative newbee to these forums and indeed spectrum emulation. I have been acquiring audio such as wavs or mps of games I own and am trying to…

    ... />
    WAVs keep all the data, but unfortunately WAVs are large ... 't do this on a bus or train. If you have ...
    Laser Laser September 2006 Emulators
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... always involves making assumptions about data locations (confined to a particular ... 256-page), data size (256 bytes or less ... . I think the change in bus timing would have been a ...
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Sinclair Miscellaneous
  • MP3 loading testsIn a previous thread, Spector says: "The loss of an mp3 file is nothing compared to the loss from an old audio cassette tape. " Dunny says: "Which i…

    ... rid of high and low signals, but it has nothing to ... obtain the same amount of data for only half the tape ...
    DEATH DEATH October 2006 Emulators
  • Currah MicrosourceHi Anyone here got a Currah Microsource ? I have one, its one of the original eval units complete with 'draft' manual. Just interested to see how …

    ... does it actually use the bus control signals in order to page ... seeing the address on the bus for that to page. Could ...
    Woody Woody October 2006 Sinclair Miscellaneous
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