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<1234567…34>
  • Bit of fun - one change onlyI also posted this on another marque's forum (for their products) to see. Its just a bit of fun really. OK, if you could of made one change to a S…

    The 'one change only' on the 48K machines, I'm not really sure how practical this would of been at the time (possible yes practical maybe) , the ability to switch the ROM out and page in 16K ram to replace it. Said 16K chunk would of been on the Speccy PCB
    spider spider February 2019 Hardware
  • How do I make a ROM selector switch ?I would like to have a ROM switch for my good old Alesis HR-16 drum machine, so I can switch between 2 sets of ROMs to get different sets of sounds. …

    ... would like to have a ROM switch for my good old Alesis ... drum machine, so I can switch between 2 sets of ROMs ... to a toggle switch to select between the ROM sets.
    I ...
    Pilsener Pilsener September 2010 Chit chat
  • ANN: ResiDOS v2.25 and +3e ROMS v1.38 releasedA major new release of ResiDOS, v2.25, is now available! The most important new features are commands and functions allowing new extended streams an…

    ... paging in rom area (similar as MB02+). Each OUT (xx),page must be ... bios and load any 16kB page from HDD/CF to DivIDE ... , which causes a RST 8 (switch to ResiDOS bank).
    [*]ResiDOS ... store data internally, so the switch would have to save the ...
    glancaster glancaster July 2009 Hardware
  • DIVIDE - source code of new FATWARE 0.14[B][U][SIZE="5"]Source code of FATware system is now free.[/SIZE][/U][/B] BAZE (author of FATWARE) release source code of last version FATWARE 0.14 …

    ... card to RAM then switch RAM instead of ROM ? Something like all ... /> - via one OUT 227,0-2 command is possible switch ram pages ... area 8192-16383 (possible switch same rom code with different zx font ... divide rom to mapram page 3
    LD A,64
    OUT (227 ...
    velesoft velesoft May 2011 Hardware
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ... to value (BIN 10000000 = connect rom page 0 with write protect)
    - OUT 23,BIN 10000000 - connect instead ZX rom external 16kB rom page number ... possible switch between your own rom and original ZX rom via one OUT command ...
    velesoft velesoft August 2013 Hardware
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... /> ;start:
    di ; switch off the 50Hz (or 60Hz ... unstack HL
    ei ; switch on interrupts
    ret ; end ... />
    ; THE 'MODE SWITCH' SUBROUTINE
    org 0x0099
    out (c), e ; set ROM and VRAM page
    ...
    chev chev October 2013 Development
  • IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…

    ... any way to check it out from BASIC (without breaking ... ) is ROM 3 (the 48 BASIC ROM). The RAM page at the ... top of
    memory is page ... be called with RAM page 7 switched in at< ... 4000h...BFE0h, and ROM 2 (the DOS ROM) switched in at ...
    The_Bert The_Bert October 2013 Sinclair Basic
  • Bit of fun - one change onlyI also posted this on another marque's forum (for their products) to see. Its just a bit of fun really. OK, if you could of made one change to a S…

    ... replace the ROM (0-16384) via the usual OUT x type ... then not rely on any ROM specific routines, unless they ... d envision it being paged out completely and running in ... be to do as a 'switch' as such as I' ... how the OUT would work without the ROM there (to page it ...
    spider spider July 2020 Hardware
  • BBC BASIC for the SpectrumThe latest update of BBC BASIC for the Spectrum at [url="http://www.mdfsnet.f9.co.uk/Software/Spectrum/BBCBasic"]http://www.mdfsnet.f9.co.uk/Software…

    ... [/url] runs successfully from any ROM banks and on an emulated ... SE with the screen paged out, giving PAGE at &4000.
    Jonathan Harston Jonathan Harston August 2005 Sinclair Basic
  • Adding new peripherals to FuseI'd like to add an execution trapper/ROM pager to Fuse so I can do ROM debugging on the PC rather than on the Spectrum. Basically, I need to trap exe…

    ... to add an execution trapper/ROM pager to Fuse so I ... can do ROM debugging on the PC rather ... for a handful of ROM addresses and page a ROM in, and trap ... of an M1 cycle for page out.

    Anyone have some ...
    Winston Winston December 2007 Emulators
  • multiple page leaflet printingI want to print out multiple page leaflets that can be kept in DVD cases. Problem is, I don't know how. I've got Publisher and Word but neither of …

    I want to print out multiple page leaflets that can be kept ... guide you through printing it out, but that was a long ...
    VincentAC VincentAC April 2008 Chit chat
  • Switchable Timex Sinclair 2068 ROM modificationI have just finished a switchable TS2068 / Spectrum ROM modification and implemented it on two TS2068s. It uses a 32K EPROM chip for the HOME ROM and…

    ... finished a switchable TS2068 / Spectrum ROM modification and implemented it on ... for the EX ROM. The channel 2 / 3 switch on the underside ... is re-purposed as a ROM select switch. It controls the upper ... instead of the Timex HOME ROM location.

    These ...
    rga24 rga24 November 2013 Hardware
  • Might need a new ROM for an MF128Had some trouble recently that has apparently killed my MF128, basically on pressing the NMI I get black paper and multicoloured vertical lines, and …

    ... for curiosity I lifted the ROM out of that and tried it ...
    Macc Macc April 2014 Hardware
  • Which games perform checksums on the 48K ROM?I've just modified a version of the 48K Spectrum ROM designed for use on the Timex Sinclair 2068, so that a 16 bit checksum of the ROM produces the r…

    ... version of the 48K Spectrum ROM designed for use on the ... 16 bit checksum of the ROM produces the result $641F and ... values as the standard 48K ROM.

    Does anyone know ... on the ROM? I'd like to try the new ROM out on ...
    rga24 rga24 June 2014 Development
  • ZX rom type detectionHere is routine for fast detection of zx rom / computer model. [URL="http://velesoft.speccy.cz/other/ZXROMDETECT.zip"]http://velesoft.speccy.cz/othe…

    ... for fast detection of zx rom / computer model.

    [URL ... ;if you need set 48basic rom
    ; OUT (C),A
    ; LD ...
    ; LD A,#10
    ; OUT (C),A

    LD ...
    velesoft velesoft January 2015 Sinclair Miscellaneous
  • Shadow of the Unicorn loader for +2A / +3hi, i have tried to load SotU with the [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0023000"]RAM loader from Fraser Ross[/url], which is l…

    ... is linked from the SofU page.
    On my ... loader uses ram page #4 for rom, and ram page #4 should ... know whether the WoS page about contended ram pages ... ?
    Is the ram page #4, when paged in ...
    I try to figure out whether my emulation is incorrect ...
    Kio Kio February 2016 Games
  • Emulating transfersI've been studying some games saved with transfers, and I'm surprised that almost no emulators have included those interfaces. This is my (incomplete…

    ... to choose an "alternate" ROM and switch to it when pressing ... that page ROM only when NMI).
    - A key to switch between ... a enable switch to page their own ROM (they use standard ROM to ... load, and you switch ...
    Zup Zup February 2017 Emulators
  • Hardware specialists ?????Are there any Sinclair hardware specialist around here? I think most of you are more gamers and I need a hardware specialist for some questions!!!!

    [quote]1) Replace ROM with ZX81 ROM and make screenadresses point to ... , load the new ROM content in page 4, switch to 4-5-6 ... -7 memory mode and make page ...
    secarica secarica April 2002 Sinclair Miscellaneous
  • dK'Tronics 4K Graphics ROMHi, I've got a working 4K graphics ROM fitted (today) in my ZX81 (yay!). I'd like to put a RAM chip (battery-backed) in the socket provided, howeve…

    I've now dumped the ROM and put it on my ... />
    You can use the ROM just by loading it into ... /c routines provided in the ROM to switch the character set.
    out how to set the links ...
    hldswrth hldswrth January 2006 Hardware
  • 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…

    ... 3 experience. And paging out any place in RAM is ...
    I actually meant choose page sizes at 8k OR 16k ... occupied by any page of ROM or any page of the 128k ... did and figured them out by trial and error.< ... left a disk interface out of my mythical first 128 ...
    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…

    ... /> [quote]I actually meant choose page sizes at 8k OR 16k ... programmably occupied by any page of ROM or any page of the 128k ... . I left a disk interface out of my mythical first 128 ... microdrive kit when we started out.

    [quote]Anyway, there ...
    JamesD JamesD October 2006 Sinclair Miscellaneous
  • 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 …

    ... ) on port 11182. Taking out the MicroSource and performing IN ... copies every 512th byte of ROM out to the first line of ... out before the program crashed (returning to BASIC with the wrong ROM ... out how to page the page back in OR (b) save the MicroSource ROM ...
    BloodBaz BloodBaz October 2006 Sinclair Miscellaneous
  • Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…

    ... planning to port the IF1 ROM:[/QUOTE]

    ... because the IF1 ROM won't page itself in if some ... as the original IF1 ROM, so that any BASIC ... commands, by issuing an OUT command in BASIC (or ... re-activated later with another OUT command. This works, but ...
    glancaster glancaster January 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 …

    ... use IN/OUT to page memory (in order to perform BASIC ROM calls ... at some unintentional place within ROM or RAM.
    BloodBaz BloodBaz March 2007 Emulators
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    ... very happily into a 16K page on my diagnostics board :-) I ... could also be started with OUT 31, meaning it has valid ... address of the OUT subroutine in the Basic ROM. But otherwise, the ... flash utility (itself started with OUT 31 ...
    Winston Winston May 2007 Hardware
  • TC2068 emulator cart - problemHi, Sorry for posting timex related stuff on a spectrum forum. So, this cart (spectrum emulator) can only adress 16K. I can load small games but i …

    ... very happily into a 16K page on my diagnostics board :-) I ... could also be started with OUT 31, meaning it has valid ... address of the OUT subroutine in the Basic ROM. But otherwise, the ... flash utility (itself started with OUT 31 ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Hardware
  • Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?

    ... device in question, but page in may be as ... NMI button press, and page out when the Z80 executes an ... ROM wasn't already paged in, and trying to page ... to 0x3800 might cause a page in, when the Z80 ... traces to figure out the page in/page out mechanism if nothing ...
    Winston Winston November 2007 Hardware
  • Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…

    ... 'd extract from such a ROM or EPROM would have:[LIST ... page the device's ROM in, would be to page it, dump the ROM ... , for example), paging the device ROM out, and then saving the RAM ... processor actually *does* read the ROM correctly (it has to for ...
    Marcelo Marcelo November 2007 Hardware
  • Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?

    ... of which is paging out the IF1 ROM so that the ... state. The Microdriver ROM is actually paged out when executing above ... PCB traces to figure out the page in/page out mechanism if nothing obvious ... address space, though. There's ROM from $0000-$0FFF, RAM from ...
    zub zub November 2007 Hardware
  • Adding new peripherals to FuseI'd like to add an execution trapper/ROM pager to Fuse so I can do ROM debugging on the PC rather than on the Spectrum. Basically, I need to trap exe…

    ... to add an execution trapper/ROM pager to Fuse so I ... can do ROM debugging on the PC rather ... for a handful of ROM addresses and page a ROM in, and trap ... of an M1 cycle for page out.

    Anyone have some ...
    zub zub December 2007 Emulators
<1234567…34>

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