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  • True Spectrum laptop (no emulation)[url]http://user.tninet.se/~vjz762w/[/url] Hi All, I have build a speccy laptop, battery part is not ready yet.... I did it on 2 days, I will put s…

    ... , some IDE interface and a bus expander, etc.

    There ... flash EEPROM will provide various ROM code including interception and NMI ...
    Phu Phu May 2008 Hardware
  • Which OS?I have an IBM thinkpad 380 with the docking port and two cards (ethernet & USB) with 80MB Ram Currently running with Windows 98 SE, Is there a bette…

    ... speed untested (max)
    CD-ROM internal, 8-20X
    Screen ... (NM2093), on PCI 2.1 bus
    Video RAM 1.125 ...
    Womble Womble May 2008 Chit chat
  • 128K Guru requiredThe answer eludeth me, and I seeketh a higher knowledge! I'm in the process of putting together a very simplistic emulation testbench of my laptop s…

    ... are booting in the 48K ROM still.
    The ... ://www.mjwilson.demon.co.uk/rom/[/url][/QUOTE]


    The 48K ROM in a Spectrum 128 is ... br />
    $ff is RST $38, calling the interrupt routine ... br />
    One swift ROM change later.. all's workin ...
    Phu Phu May 2008 Hardware
  • 128K Guru requiredThe answer eludeth me, and I seeketh a higher knowledge! I'm in the process of putting together a very simplistic emulation testbench of my laptop s…

    ... )...

    The 48K ROM in a Spectrum 128 is ... routine at $3c04 in ROM 1 that is called by ... in the "real" 48K ROM, but has been used in ... .

    $ff is RST $38, calling the interrupt routine ... ...

    One swift ROM change later.. all's workin ...
    rich_chandler rich_chandler May 2008 Hardware
  • A good site with Z80 ZX Spectrum 48K tunesI found this good site; [url]http://z80.e-demo.pl/[/url] ; I listened to a few tunes yet, and I am [B]AMAZED![/B][B]To me it sounds WAY BETTER THAN A…

    ... and improving GeneralSound's card ROM to play also regular beeper ... a newer port called nemo-bus so it's impossible to ... of interface from nebo-bus to regular zx-bus so there is ... write software for it. And ROM engines.
    I can't ...
    Mister Beep Mister Beep May 2008 Sinclair Miscellaneous
  • [WANTED] ASM routinesHi there, 1.) i really need 5-6 working and well commented routines, showing assembler capabilities. They should be simple, but not too much complic…

    ... be done using a ROM call using RST instructions, or your own ... just isn't supported in ROM so you need to handle ...
    bobs bobs June 2008 Emulators
  • Faulty M1 pin on a Z80 made from SGS?It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is no…

    ... ;277805]How does ResiDOS trap RST 8 execution to page in ... M1 for the case of RST 8 traps)[/QUOTE]

    ROM is never actually active - instead ...
    glancaster glancaster June 2008 Hardware
  • 48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…

    ... ($FF) at end of ROM (around $3900 if memory ...
    3) The original 48K ROM is different to the 48 ... they jump into the ROM at non-standard locations ... work. See Geoff's ROM disassembly for a better explaination ... port 255 is used the bus is left floating and ...
    Jimmy Jimmy June 2008 Games
  • Spin problems/issuesI am running Spin 0.666 and have noticed a few issues (some are bugs, some might be just me). I am using Vista sp1 (yeah I know!), and I've seen Dunn…

    ... as I haven't enabled ROM write mode this should be ... it thinks $0000 contains the RST 28 ($EF) opcode.

    Jimmy Jimmy June 2008 Emulators
  • Spin problems/issuesI am running Spin 0.666 and have noticed a few issues (some are bugs, some might be just me). I am using Vista sp1 (yeah I know!), and I've seen Dunn…

    ... as I haven't enabled ROM write mode this should be ... it thinks $0000 contains the RST 28 ($EF) opcode.[/quote]
    Marko Marko June 2008 Emulators
  • Handling RST8 on a +3Well, I've come to that bit of my project that I wasn't really looking forward to (because I don't understand enough about the ZX BASIC ROM) - extend…

    [QUOTE=aowen;286395]RST 8 in the ROM is the error routine. Anytime ... line doesn't make sense, RST 8 gets called. Various interfaces ... /> Any error is routed via RST 8, not just nonsense in ...
    glancaster glancaster July 2008 Development
  • Handling RST8 on a +3Well, I've come to that bit of my project that I wasn't really looking forward to (because I don't understand enough about the ZX BASIC ROM) - extend…

    ... not have each ROM module need its own RST 8 infrastructure - I ... bottom 4K page of my ROM with some kind of generalized ...
    Winston Winston July 2008 Development
  • Handling RST8 on a +3Well, I've come to that bit of my project that I wasn't really looking forward to (because I don't understand enough about the ZX BASIC ROM) - extend…

    ... only do so via the ROM socket library, or the ... need to do an RST 8 trap at any ... time (because RST 8 traps bring along other ... one device can own RST 8 ). The ROM can be entered ... library without requiring any ROM trapping, the RST 8 trap infrastructure ...
    Winston Winston July 2008 Development
  • Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …

    ... c, whether in paged ROM or loadable in RAM ... a wrapper around the ROM entry points, the assembler ... around the functions in ROM that allow streams to ... /reassemble code if the ROM gets updated. The jump ... vector on the data bus on interrupt acknowledge. The ...
    Winston Winston July 2008 Development
  • Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …

    ... without needing to trap RST 8 and extend BASIC.< ... considerably beyond the ROM release point but the ROM was released ... RAM or a shadow ROM but must be in ... the main ROM. Furthermore they must be ... I did develop the only ROM to use these routines. ...
    Geoff Geoff July 2008 Development
  • Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …

    ... other way is when the ROM sees more than one key ... joystick data on the data bus.

    -- Richard
    Phu Phu August 2008 Hardware
  • Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …

    [QUOTE=RST#08;290567]I'm ... complete' version of the ROM incorporating much of what became ... through The Complete Spectrum ROM Disassembly I formed the ... release of the Spectrum ROM while development of the ... from public sources and the ROM itself.
    Geoff.
    Geoff Geoff August 2008 Development
  • ZX128/+2 unrainer (HAL10H8)[url]http://velesoft.speccy.cz/zx/umbrella/umbrella.htm[/url]

    ... to low 16kB(to ZX rom). You can in NMI menu ... set correct ZX128 page+videoram+rom
    Next NMI version will ... lines A8-A15 on ZX bus is unstable on many ZX ... interface is connect to ZX bus). If your ZX work without ...
    velesoft velesoft August 2008 Hardware
  • WTF is this???[url=http://cgi.ebay.es/Spectrum-128-Emulator-ZX-Interface-2-ROM-Cartridge_W0QQitemZ170254558796QQihZ007QQcategoryZ50223QQrdZ1QQssPageNameZWD2VQQcmdZ…

    ... 48K RAM.

    ROM sections themselves can be paged ... and out with the main ROM)

    See ... swap between the IF2 ROM and the Spectrum's ... main ROM, which would be simpler.
    bus - and you could ...
    Winston Winston August 2008 Hardware
  • Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…

    ... expected input onto the data bus that is consistent for ... be placing on the bus for a high or ... pins onto the Spectrum's bus when the IN instruction ... pages out the Spectrum's ROM) and pages in its ... running instead of the normal ROM tape loader.

    ...
    Winston Winston September 2008 Hardware
  • Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…

    ... data arrives on the data bus in response to the right ... case where only the standard ROM loader is used, you're ...
    Winston Winston September 2008 Hardware
  • I just learnt that Spectrum has 1kB of unused ROMWell, man learns through all his life. I have just discovered that Spectrum has over 1 kilobyte of unused ROM memory, from address 14446 to 15615. Al…

    ... the big gap in the ROM is that it was unfinished ... random values onto the floating bus -- or they don't bother ...
    polomint polomint October 2008 Development
  • Spectrum 'slow down' hardwareAny one else got one of these ? If so do you find it useful ? [url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=…

    ... from using NMI and a ROM hack) then the issue of ... cycles) rather than a ?hard? bus request lasting several mS. Cute ...
    RST#08 RST#08 October 2008 Hardware
  • A problem with a friends laptopMy mums friends laptop wont display anything on the screen anymore. When it boots up you can here it starting up but the screen remains black. All th…

    ... wrote the BBC Micro Basic ROM was called Roger Wilson but ... change the unidirectional front side bus (Tube) to a bi-directional ...
    IN31 IN31 October 2008 Chit chat
  • Multiface3 and Divide combinationI recently bought a Multiface3 from ebay, I haven't got it yet but I was wondering... since the MF3 has a through port (the one i got), will it be co…

    ... hardware functions they provide (NMI, ROM paging) will cause both of ... be communicating on the same bus lines all the time. (But ...
    gasman gasman November 2008 Hardware
  • 16K Rom with RS232 supportHi all, I am looking for a 16K Rom-code (to fit into the speccy) which supports RS232 and Network of IF1. Background: I am using 48K Issue 3 with W…

    ... I have in system programmable ROM. It works pretty fine. But ... to store the IF 1 ROM content. How to realise the ... traps RST 8. You'd have to rewrite the Spectrum ROM to ... use something other than RST 8 to ...
    Winston Winston November 2008 Hardware
  • The 8-Bit Book...Tentative cover design to replace the Elite-based one... It's been made to look as close to the old Electro-Fluorescent display as possible... Some …

    ... 16-bit to 8-bit bus for the processor to interface ... than that, as the system ROM and a small RAM scratch ... are on the 16-bit bus. The latter might not sound ... on an 8-bit data bus, such as the Apple IIGS ...
    Matt_B Matt_B November 2008 Chit chat
  • Interface 1 on TS2068 - Possible?After an e-mail from a gentleman on eBay I realized the TS2068 edge connector doesn't have one or more signals that the Interface 1 needs. The twiste…

    ... need to have the Spectrum ROM active though I'm not ... done via RST 08. It's the returning to ROM after the ...
    Alcoholics Anonymous Alcoholics Anonymous November 2008 Hardware
  • 4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?

    ... Spectrum only has multiplexed address bus for lower RAM, so I ... on this Speccy
    * Replace ROM with CMOS EPROM (if average ...
    RetroTechie RetroTechie December 2008 Hardware
  • Keyboard routinesI'll ask here first - since this must be a long-ago solved problem, and hopefully I can avoid re-inventing the wheel... I need a keyboard routine th…

    ... calling the ZX ROM is handled via the RST 8 trap, but ... if the RST 8 trap is disabled because ... return from ZX ROM, not the Spectranet ROM, because, well - RST 8 has ... longer depend on the ZX ROM).
    Winston Winston January 2009 Development
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