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<1…16171819202122…34>
  • +2A, are they all this incompatible?My +2A does not seem to be faulty but the number of games that don't run on it are silly. Scooby Doo(Elite), Crazy Cars , Turbo Outrun, Vindicator(im…

    ... 't work, not just a rom issue.[/quote]

    It ... some games (no floating bus) and sometimes a ROM issue. In the ... Bombjack it's only a ROM issue causing the mode 2 ...
    Woody Woody December 2007 Hardware
  • Channel redirectionHi! I need help regarding the following problem. I want a BASIC decoder running on Spectrum, written in assembler. I found the great *LIST routine […

    ... now using the PO_SEARCH ($0C41) ROM routine to search for the ... point) number printing routine in ROM (used by the *LIST routine ... it works only with channels (RST 16).
    A sample output ...
    0sAND1s 0sAND1s December 2007 Development
  • It's a trap!So I got a CPLD (not the eventual one I want to use for the ethernet project - rather, one I actually have here and now, an XC9536 in a PLCC44). And…

    ... and then pages in my ROM.

    This ... now also monitors the data bus. The opcode for CALL, ... CALL instruction on the data bus gets reset). Then this ... flip flop pages in our ROM.

    The ... Z80 was also reading the bus. A transparent latch is ...
    Winston Winston December 2007 Hardware
  • Minigame Compo 2007Hi there, also this year, there'll be a minigame competition, open to all 8-bit computers and consoles. It consists on writing games whose size (…

    ... from the 48k ROM. From the Complete Spectrum ROM Disassembly,


    1BB0 REPORT-0 RST 0008,ERROR-1 Use the ...
    Paolo Ferraris Paolo Ferraris January 2008 Development
  • Fuse 0.9.0 releasedVersion 0.9.0 of [url=http://fuse-emulator.sourceforge.net/]Fuse[/url], the Free Unix Spectrum Emulator[/url] has just been released. Highlights of t…

    ... second, with a corrected ROM. The result for fuse ... /> ORG 31000

    RST 8
    DEFB #31
    LD (#5CED),HL
    RST 8
    DEFB #32
    RET C
    RST 16
    INC HL

    VERS1 DEFB 'ANTIGUA ROM'
    DEFB 0
    VERS2 ...
    NotFound NotFound January 2008 Emulators
  • Fuse 0.9.0 releasedVersion 0.9.0 of [url=http://fuse-emulator.sourceforge.net/]Fuse[/url], the Free Unix Spectrum Emulator[/url] has just been released. Highlights of t…

    ... /> ORG 31000

    RST 8
    DEFB #31
    LD (#5CED),HL
    RST 8
    DEFB #32
    RET C
    RST 16
    INC HL

    VERS1 DEFB 'ANTIGUA ROM'
    DEFB 0
    VERS2 ... DEFB 'NUEVA ROM'
    DEFB 0
    ...
    NotFound NotFound January 2008 Emulators
  • Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …

    ... you're using the floating bus do do vsync). Matthew Smith ... -states on 48k). Normal Spectrum ROM ISR is OK.
    HALT ...
    Jon Needle Jon Needle January 2008 Development
  • Faulty Spectrum (help requested)I have an issue 6a specci. It's Z80 has the fault m1 line problem (Multiface 128 does not work). So I decided to put in a new Z80 but unfortunately i…

    ... , I would suggest the address bus isn't connected correctly.

    When the 48K ROM starts up, within the first ... have a badly connected data bus on your CPU socket, but ...
    Phu Phu February 2008 Hardware
  • DivIDE HelpHi all, After a rather long wait my DivIDE from Papaya labs arrived. I connected it to my spectrum, turned it on and...nothing. The green power LED…

    ... ?) and paging out the Spectrum ROM.

    With an externally ... down SPACE to rescan the bus. I powered the hard drive ...
    Winston Winston February 2008 Hardware
  • Original Kempston interface on a +3Hello everyone, if i insert an original kempston interface in the extension port of a +3 should it work or not? I tried it and the machine didn't bo…

    ... this interface has a shadow ROM of some sort? Its exactly ... , interfaces don't work because bus interface is dirty.

    Jose_Leandro Jose_Leandro February 2008 Hardware
  • Ethernet updateNo, I've not been entirely dormant on the project whilst I was away... [url]http://spectrum.alioth.net/doc/index.php/Current_events[/url] - Work in …

    ... really one extra bus, the PA (paged address) bus which has 8 ... , D0-D7, and the control bus), and these are shared between ... since you could design the ROM to know about it, just ... like the Spectrum +3's ROM handles the floppy disc.
    Winston Winston February 2008 Hardware
  • DivIDE+ and 128K HeatsinkI got my DivIDE+ yesterday and i tried it on a 48K+ at first, it worked marvelously on it, no problems at all. Today i desided to try it on my 128 H…

    ... 't function with other paged ROM hardware either) - otherwise I'd ... M1 or IORQ since the bus signals aren't asserted for ...
    Winston Winston February 2008 Hardware
  • Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…

    ... ). IM 1 by causes an RST#38 to happen every 50th ... a second, which the ZX ROM uses to do it's ...
    icabod icabod March 2008 Sinclair Miscellaneous
  • Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…

    ... one in the 128 Editor ROM, it's horribly complicated and ... at the end of the RST 38 routine).

    The ...
    Digital Prawn Digital Prawn March 2008 Sinclair Miscellaneous
  • Spectrum Ethernet update...in which a toastrack 128K machine prods a machine outside of my LAN for the first time. [url]http://spectrum.alioth.net/doc/index.php/Current_eve…

    ... an RST 8 trap and subsequent return to the main ROM, ... condition from the original BASIC ROM).
    [*]Next, you ... BASIC_STMT_NEXT ($1bf4) in the BASIC ROM. Job done.
    [*]Finally, ... BASIC_STMT_R_1 ($1b7d) in the BASIC ROM. Finished!
    [/LIST]
    ...
    glancaster glancaster March 2008 Hardware
  • Spectrum Ethernet update...in which a toastrack 128K machine prods a machine outside of my LAN for the first time. [url]http://spectrum.alioth.net/doc/index.php/Current_eve…

    ... and the whole thing with RST 8 getting trapped twice. I ... a 128k flash chip for ROM (specifically, the AMD Am29F010 ... 128x8 ). Both ROM and RAM on the board ... my intention to have ROM management in the vein ... to add their own ROM modules in any left ...
    Winston Winston March 2008 Hardware
  • How many expansions can a Speccy handle ?How many expansions / interfaces / addons can a Speccy handle ? I'm not thinking about the issue of powering the interfaces through the Speccy's PS…

    Depends on the nature of the expansions, really. With some, it may only be one due to shadow ROM conflicts. With others, you may be able to keep going until the load on the bus gets too high.
    Winston Winston March 2008 Hardware
  • How many expansions can a Speccy handle ?How many expansions / interfaces / addons can a Speccy handle ? I'm not thinking about the issue of powering the interfaces through the Speccy's PS…

    ... happens by setting the address bus to the value of the ... /> If each device had an RST 8 trap (an academic exercise ... one device can actually trap RST 8 at a time - unfortunately ... which device gets to trap RST 8) then you would slow ...
    Winston Winston March 2008 Hardware
  • Blown standard divideI recently bought a SIY divide kit from Papaya labs and after i soldered everything, it worked perfectly. I've used it 5-6 times without problems (Fa…

    ... a speccy board without a ROM chip doesn;t display any ... behaving like it has no rom on it?[/QUOTE]

    A Speccy with no ROM will give you a screen ... (because it will endlessly execute RST 0x38 instructions and push 0x0039 ...
    gasman gasman April 2008 Hardware
  • If you've got a real working MF128,IF1, and MDR combo can I ask a favour?So, if you do have a real Multiface 128, Interface 1, Microdrive and, oh yeah, a Spectrum (48k or 128k) that are all working, can I ask a favour...? …

    ... />
    [CODE];
    ; another if1 rom check that doesn't corrupt ... (err_sp),sp ;
    rst $08 ; page in shadow rom and
    defb ...
    jp jp April 2008 Hardware
  • Interface 1 emulation issuesFor Virtual Spectrum v3.0 I am implementing virtual Interface 1 and Interface 2 options! The I/F2 ROM option works already, and I have got the I/F1 s…

    ...
    ld (hd_11),de
    rst $08
    defb $32
    rom. This tallys up with a ... taken of the issue 2 rom file...
    jp jp April 2008 Emulators
  • MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…

    ... /> [CODE]out (c),b
    rst 0[/CODE]

    The ... from $0036-$0037. The Flash ROM in ZXMMC+ uses this method ...
    glancaster glancaster April 2008 Development
  • MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…

    ... page 9 + RST 0. It's complicated. In BS-ROM or orig ... I use in BS-ROM/ZX ROM command OUT 23,73 then ... insert to adress #1E7F instruction RST 0 and switching to RESIDOS ... from ZX basic/BS-ROM will very easy and more ...
    velesoft velesoft April 2008 Development
  • MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…

    ... page 9 + RST 0. It's complicated. In BS-ROM or orig ... I use in BS-ROM/ZX ROM command OUT 23,73 then ... insert to adress #1E7F instruction RST 0 and switching to RESIDOS ... from ZX basic/BS-ROM will very easy and more ...
    glancaster glancaster April 2008 Development
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... are called indirectly (in case ROM changed) so it should ... br /> CALL prmsg
    DEFM "ROM generated!"
    DEFB $0D
    DEFM "SAVE rom CODE 49152,16384"
    DEFB ... br />
    saferst10:
    ;calls RST 10, but preserves registers
    Jimmy Jimmy April 2008 Emulators
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... require the charset in the ROM to be intact
    ... in and around "reserved" ROM to provide a generic ... the first 1200 bytes of ROM - does this include ... associated CHANNEL information for RST 16 to work? WOuld ... the layout of the ZX ROM)

    PS: ...
    BloodBaz BloodBaz April 2008 Emulators
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... this!
    [/LIST]

    RST 10 won't work with ... fact none of the RST routines (apart from RST 38 ) will work ... the game still uses the ROM.

    I recommend Geoff ... fully commented disassembly of the ROM online. I use it a ...
    Jimmy Jimmy April 2008 Emulators
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... on the RST listings.
    Obviously, other calls to ROM may exist ...
    BloodBaz BloodBaz April 2008 Emulators
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... on the RST listings.
    Obviously, other calls to ROM may exist ...
    Dunny Dunny April 2008 Emulators
  • It's alive![url]http://spectrum.alioth.net/doc/index.php/Current_events[/url] It actually works now :-)

    ... have to be some extra rom entry point traps, I suspect ... all be done via the RST 8 entry point)

    ROM (to map IP addresses to ...
    Winston Winston April 2008 Hardware
<1…16171819202122…34>

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