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<1…891011121314…34>
  • 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 …

    ... , the BASIC statement SPECTRUM does disable paging.

    Two notable ... (tests a byte in the ROM, very ugly IMHO).

    Luca Luca March 2005 Emulators
  • Which expansions can I attach to a +2A?I have several peripherals that I would like to connect to a +2A: an Interface 1 with Microdrive, a +D disk interface and kempston joystick interface…

    ... +2 all had one ROM chip. The CE pin ... connector is used to disable the internal ROM. When that pin ... 5 volts the internal ROM chip is switched off.< ... devices could switch off both ROM chips.

    ... to switch off the internal ROM's can.

    KeepGood KeepGood October 2005 Sinclair Miscellaneous
  • divIDE issuesI discovered a few issues with the divIDE hardware and FATware software that may be of interest to some people. 1. ROM paging If your Spectrum is a…

    ... is not set). Anyway, general disable of paging can be always ... loaders for Ultimate games MUST disable the 128k paging before running ... ). Without measuring the delay of ROM-routine execution time, no software ...
    zilog zilog October 2005 Development
  • OT: Graphic Card problemAhem. It's me again with a computer problem! Last time I posted with a problem I was pleasantly suprised with some insightful answers that helped fix…

    ... the screen. However, if I disable all hardware acceleration in Windows ... froze. I flashed the card ROM but the problem didn't ...
    cascarria cascarria November 2005 Chit chat
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... at address 0x38 in the ROM will be executed. That code ... and another way is to disable interrupts entirely. I've done ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... calls directly into the 48K ROM so it probably needs to ... to work with the 128 ROM in 128k mode.

    disable interrupts on entry and enable ...
    Alcoholics Anonymous Alcoholics Anonymous July 2006 Sinclair Basic
  • Lesser used BASIC commandsAre there any interesting articles or books that explore some of the lesser used BASIC commands/functions e.g. DEF FN, IN, OUT etc? The Spectrum BAS…

    ... calls directly into the 48K ROM so it probably needs to ... to work with the 128 ROM in 128k mode.

    disable interrupts on entry and enable ...
    na_th_an na_th_an July 2006 Sinclair Basic
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... edge connector that will disable the internal ROM. This was used for ... place of the paged out ROM.

    [quote]
    The ... was pants.

    The ROM would have to be modified ... a total rewrite of the ROM.

    [quote]
    Introducing ...
    Alcoholics Anonymous Alcoholics Anonymous October 2006 Sinclair Miscellaneous
  • The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…

    ... connector that will disable the internal ROM. This was used ... place of the paged out ROM.[/quote]
    Yeah, ... think the 48k's ROM with single key entry ... />
    [quote]The ROM would have to be modified ... a total rewrite of the ROM.[/quote]
    A blitter ...
    JamesD JamesD October 2006 Sinclair Miscellaneous
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... />
    1. Copy specp3ecf.rom out of ROM directory to Desktop and ... rename to myp3erom.rom
    2. Select Spectrum +3 ... Advanced Setting, browse to myp3erom.rom

    Also fails with ... I've forgotten how to disable FATware again!)
    glancaster glancaster October 2006 Emulators
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... =glancaster]1. Copy specp3ecf.rom out of ROM directory to Desktop and ... rename to myp3erom.rom[/QUOTE]

    Aha! ... />
    [quote] Added a ROM file selector to the hardware ... from the ROM subdirectory can be used - I'll disable the feature ...
    MikeW MikeW October 2006 Emulators
  • EightyOne 0.43Hmmm, 'twas round about July I fell asleep and only came round t'other day - honest gov! Anyway, I thought I'd better whip out a quick release and p…

    ... from the ROM subdirectory can be used - I'll disable the feature ...
    glancaster glancaster November 2006 Emulators
  • The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…

    ... loading[LIST]
    [*]Bypasses the ROM loader completely, if called, by ... />
    [1] Actually, it does disable memory contention to save a ...
    Jon Needle Jon Needle November 2006 Emulators
  • USB Flash DriveHi all, Does anyone know if it possible to build a USB interface where one can connect a USB Flash Drive to? These are also called "Memory Sticks" i…

    ... it possible to have the ROM on the ZXCF be written ... automatically gets loaded into the ROM on POS and then used ... as Speccy ROM after filling it with proper content (and disable write ...
    piters piters November 2006 Hardware
  • DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…

    ... ofcourse all work when I disable "rwap" mode.
    Infact after ... .12 and RWAP option. 128K ROM

    OK Barbarian resets ...
    rwap rwap January 2007 Development
  • DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…

    ... 628512 SMD soldered) and 512kB ROM (29F040 PLCC in socket, address ... traps are enabled with selected ROM/RAM banks. This disables ... the internal ROM permanently and provides custom ROM contents with ... add a jumper to enable/disable the ROM0 traps lock.
    rwap rwap January 2007 Development
  • ResiDOS v1.92 and +3e ROMs v1.30 releasedI've just updated ResiDOS to v1.92, and the +3e ROMs to v1.30. Full details can be found at: [URL="http://www.worldofspectrum.org/zxplus3e/"]http://…

    ... be interested to know if ROM/CS overrides whatever bank is ... . If not, you can always disable the ZXMMC+ (or whatever) memory ...
    glancaster glancaster January 2007 Hardware
  • divIDE ProductionJust to let everyone know that we have made further progress with the updated divIDE. Board design has been completed and changes have been made to …

    ... around the implementation of extra ROM and RAM.

    We ... ). This allows up to 512K ROM and 512K Battery Backed RAM ... jumper can be used to disable this.

    More details ...
    rwap rwap February 2007 Announcements
  • divIDE ProductionJust to let everyone know that we have made further progress with the updated divIDE. Board design has been completed and changes have been made to …

    ...
    - through connector
    - 512K ROM and 512K battery backed RAM ... support (with a jumper to disable this)
    rwap rwap February 2007 Announcements
  • Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …

    ... upper RAM, since this will disable it. This will work as ... 'll need is a flash ROM and the LCD and some ...
    Winston Winston March 2007 Hardware
  • Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …

    ... used to snatch the uSource ROM was, in fact, paging by ... line and disable the -ROMCS line so the BASIC ROM is not ... , in effect disabling the uSource ROM and reenabling BASIC.
    The ...
    Marcelo Marcelo March 2007 Emulators
  • Multiface ResidentI'm thinking about adapting some existing code to be Multiface "resident"... but being perfectly honest I'm not quite sure where to start. Any top t…

    ... />
    You might want to disable/enable interrupts as well (DI ... remember if your code uses ROM routines you'll have to ... routine or copy/modify the ROM routine into the RAM with ...
    Mr. Anonymous Mr. Anonymous March 2007 Development
  • Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…

    ... high thus disabling the BASIC ROM. Well, IORQGE is the same ... 6A. This allows you to disable ULA's I/O decoding ...
    Marcelo Marcelo April 2007 Hardware
  • +2b not working with interface1i was trying to transfer some of my programs from my microdrive carts onto tapes last night, but found both my 48k and my toast rack 128K have decide…

    ... building a little circuit to disable IF1 until its in 48k ... via RST #08 in 48k ROM, it will be okay. If ...
    Sonic Sonic May 2007 Hardware
  • Another TS Emu CartLooks like the one I have. [url]http://cgi.ebay.com/TC2068-Cartdrige-48K-emulator-for-Timex-Computer-2068_W0QQitemZ250133271074QQihZ015QQcategoryZ124…

    ... that, when pulled low, will disable *all* internal memory. There is ... to match the Spectrum's rom disable signal which can also only ... disable the 0-16k area.
    < ... filled in by the Spectrum ROM on cartridge, which is good ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Sales
  • Disable onboard memoryWould this work...? Access to onboard I/O can be disabled by holding IORQGE high. Would it be possible to create a MEMRQGE in a similar way to disa…

    ... , I read your post as "disable all onboard memory". Pulling high ... your circuit suggestion would only disable ULA access to the memory ... still be talking to the ROM and upper memory bank.
    Phu Phu June 2007 Hardware
  • Multiple ROMsI'm mulling over the idea of a bit of hardware with a ROM in it, which has some commands that can be called by BASIC (like the old wafadrive star com…

    ... try to page its own ROM in (even when PC reaches ... IF1 ROM commands (eg for Microdrive access), you can temporarily disable the ... divIDE+ etc ROM, do that and ... then re-enable the ROM.

    So, if you ...
    glancaster glancaster September 2007 Development
  • Look what I got!Look what I just got in the post: [url]http://www.alioth.net/tmp/W5100.jpg[/url] But, please... don't hold your breath :-) Coming to an edge connec…

    ... having a hardware jumper to disable them should be straightforward enough ... non-divide general rom and a DivIDE specific rom. Nice.

    LaesQ LaesQ October 2007 Hardware
  • The new GP2Xpectrum releases threadYeah, I know the thread title isn't exactly too original, but I've decided that just one post to hold all updates makes more sense than a lot of smal…

    ... .
    - "fast loading" option to disable speed emulation, tape sound, and ... in +2A/+3 mode (the ROM wasn't properly selected).
    - Replaced the text "ROM LIST" with "PROGRAM LIST", and ...
    Metalbrain Metalbrain February 2008 Emulators
  • 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 ... could be happening. I also disable interrupts in the handler itself ...
    Digital Prawn Digital Prawn March 2008 Sinclair Miscellaneous
<1…891011121314…34>

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