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Search Again :: Adv Search 1000 results in 0.015s
<1234567…34>
  • 128kB software with incorrect memory pagingI search all ZX software using incorrect memory paging via OUT (253),A. This software must write to port data value with D6=1 for compatibility with …

    ... all ZX software using incorrect memory paging via OUT (253),A. This ... ?t=12255[/url]

    Pentagon computers with 256/512 or ... use on this computers different memory pages.
    velesoft velesoft March 2010 Games
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... problem getting my brain around paging. Well, actually the bit I ... />
    Port 32765 controls the memory paging. Bits 0-2 determine the ...
    trellis trellis August 2003 Sinclair Basic
  • How would I turn memory paging on/off in Assembler?Sorry for the noob question. It's perfectly ok to do OUT 32765,48 in BASIC to turn memory paging off. But how do you do it in assembly language? I kn…

    ... ,48 in BASIC to turn memory paging off. But how do you ...
    ivanb303 ivanb303 January 2018 Development
  • Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …

    ... features as possibility ZX128/Pentagon 512/Pentagon 1024 memory paging. Impossibility use second ... 128kB pages are fast memory and ula not slow ... (no demos) and big Pentagon compatible ram = more new ... 32kB image to extra memory and connect instead ZX ...
    velesoft velesoft March 2011 Hardware
  • what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…

    ... that Pentagon uses some extra bits from port 7FFD for extra memory ... using those bits for extra memory switching and if it ... 3 / port DFFD for extra memory paging.
    What is ZX PROFI ... established port for extra memory, other than the Pentagon road ?
    < ...
    secarica secarica September 2004 Sinclair Miscellaneous
  • Pentagon/Scorpion Speed of software Just wanted to ask if anyone knows if the 7Mhz mode is ever/ or maybe frequently used on the Pentagon or Scorpion Spectrum clones... Just that with…

    ... maybe frequently used on the Pentagon or Scorpion Spectrum clones...

    CKay CKay December 2004 Sinclair Miscellaneous
  • Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS) -------------------- In the +3, we have crammed in more than twice the amount of memory…

    ... /> twice the amount of memory than can comfortably fit. While ... br /> paging - BASIC (and the processor) always 'sees' the memory as 16K ... to "disconnect" the ROM memory completely and to write to ... lowest 16 KB of memory with proper paging?
    I always ...
    Ralf Ralf March 2008 Development
  • Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…

    ... /+3...)
    9 Pentagon 128k
    [B]10 Scorpion 256k[/B]
    Pentagon,Scorpion,KAY,Profi), General Sound cpu&memory info, hi ... ZX type+memory size(ZX48/128, Pentagon 256/512/1024, Scorpion 256/1024 ...
    velesoft velesoft August 2009 Emulators
  • New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…

    ... /> memory paging compatible with ZX Profi 1024, Pentagon 128-1024, ZS Scorpion 256 ... or PENTAGON memory)
    Speed-up slow ZX memory (contended memory pages)< ... - software controlled NMI button
    - memory paging compatibilty with all popular russian ...
    velesoft velesoft December 2009 Hardware
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... ). The original Spectrum 128K memory map (with only one ... /> Port 0x1FFD on the Pentagon switches memory banks as described in [ ... Second category of expansion of memory over 128k.

    ... Third category of expansion of memory over 128k.[/quote]
    ...
    ajmoss ajmoss August 2010 Hardware
  • TRD/SCL importer for MB02+ and PROFI INTERFACEHi all MB02+ users, I know this time noone of you will be able to use my new program, because with MB02+ you will also need Velesoft's PROFI INTERFA…

    ... main feature is extra memory of 1MB. Together with ... memory features and clones- ZX PROFI 1MB, Scorpion 1MB, PENTAGON ... 1MB (of course, only their memory layouts ... also supports MB02+ memory paging, full Divide memory layout and one ...
    Hood Hood April 2010 Development
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... about memory paging on russian ZX clones with extended memory:

    [B]Pentagon ... +3 manual)

    [B]Scorpion 256 kB[/B]
    [U ... kB memory
    D6 = unused
    D7 = unused

    [B]Scorpion ...
    velesoft velesoft August 2010 Hardware
  • How compatibel is the Sprinter 2000?How compatibel is the Sprinter 2000? I have one but only trd software runs. Joystick did not work and tape in and tape out too. I have schematics bu…

    ... ? Same as russian Pentagon or Scorpion clones. Sprinter can use ... screen timing(Pentagon/Scorpion), turbo on/off, memory size 128/ ... Sprinter use different adressation of memory paging ports, then can be ... uncomplette ports adressation or paging via LD A,xx ...
    velesoft velesoft September 2010 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... 3-6) 6 - Scorpion ZS256 Turbo+ B - Scorpion GMX
    2 ... /+3 8 - Pentagon 128(1991) D - Pentagon-1024SL
    4 ... ęĺěďńň?? ěűřč (kempston mouse port)
    Pag - ď?đň ńňđŕ?č? ďŕě˙ňč (memory paging port)
    Pal - ď?đň ďŕ?čňđű (videopalette port ...
    velesoft velesoft December 2012 Hardware
  • Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]

    ... . PROFI support memory paging compatible with ZX PROFI 1024, Pentagon 1024, Scorpion 1024. But ... page. For example on Pentagon 1024 are paging bits on D0-D2 ... port is same in all memory paging modes (on PROFI).

    velesoft velesoft May 2014 Hardware
  • Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]

    ... . PROFI support memory paging compatible with ZX PROFI 1024, Pentagon 1024, Scorpion 1024. But ... page. For example on Pentagon 1024 are paging bits on D0-D2 ... port is same in all memory paging modes (on PROFI).

    Black_Cat Black_Cat May 2014 Hardware
  • Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]

    ... /> PROFI support 4 different memory paging modes. Use only one ( ... memory model for correct detection which paging ports are used (ZX128,Pentagon ... 1024, ZX PROFI 1024, Scorpion ... sign value for extended memory and all other ...
    velesoft velesoft May 2014 Hardware
  • [NEW]: Spectaculator 6.0Spectaculator is a Sinclair ZX Spectrum emulator for PCs running Windows 95, 98, ME, NT 4, 2000 and XP. Spectaculator emulates the 16K/48K/128K/+2/+…

    ... to automatically reset the Pentagon/Scorpion and
    boot ... General Sound emulation (provides the Pentagon and Scorpion with
    4- ... br /> (little-endian) in main memory.

    - ... data from either main memory or a
    ...
    Jon Needle Jon Needle December 2003 Emulators
  • RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…

    ... ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use software ... is used on ZS SCORPION for memory paging and reading this ports ... different functions) used too for memory paging. Read of this ports is ... TURBO switching routines for ZS SCORPION is on ZX+2A/+ ...
    velesoft velesoft October 2008 Games
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... blocks - on ZX128 is possible memory paging only in high 16kB. This ... . 1MB external memory for SAM COUPE enable also memory paging in high 16kB ... clones with extended memory support. (software for Pentagon 256, Pentagon 512, Pentagon 1024, Assemblers ...
    velesoft velesoft April 2010 Games
  • Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …

    Does anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ?
    Looking at schematics it has to be simple solution, probably king of interleaving, but I could not find any details.
    kpuchatek kpuchatek October 2012 Hardware
  • Fuse for Mac OS X 1.1.1 ReleasedA new version of Fuse for Mac OS X has been released at the dedicated sourceforge project and shortly here on WoS: [url]http://sourceforge.net/proje…

    ... to the following machines; Pentagon series and Scorpion, and the following interfaces ... changed (Fredrick Meunier).
    [*] Fix memory disk image corrupted after save ... Meunier).
    [*] Initialise the Pentagon 1024k memory ports from a snapshot (ketmar ...
    Fred Fred June 2013 Emulators
  • Enable 128kB paging in emulatorFrom Zx Spectrum documentation ([url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url]) [CODE][SIZE="1"]When memory is being pag…

    ... />
    [CODE][SIZE="1"]When memory is being paged, interrupts should ... this does not affect the memory between 0x4000 and 0x7fff, ... Red"]Bit 5: If set, memory paging will be disabled and further ... a .z80 snapshot where paging was disabled before saving and ...
    Ralf Ralf June 2013 Emulators
  • DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…

    ... sram + 512kB flash eprom.
    Memory paging in this device is enable ... .

    Divide ram paging bits on port #E3 (write ... for this 128kB paging port very easy:
    - Paging port adress # ...
    I name this new paging mode "DIVIDE128". Systems in this ...
    velesoft velesoft June 2013 Hardware
  • New ZX-Uno Spectrum CoreFor those who haven't noticed, a new Zx-Uno Spectrum core has been published: http://www.zxuno.com/forum/viewtopic.php?f=14&t=406 Those lucky e…

    ... /> - It's possible to setup memory paging so it works exactly as ... Pentagon (Kpacku Deluxe y Heart demos work now).
    - Timex MMU (memory ...
    Uto Uto June 2016 Hardware
  • Which emulator and assembler?Hi, I am looking to learn z80 assembly language and I feel the best option is a spectrum emulator and an assembler. Can anybody recommend the best …

    ... object file or directly to memory. There's also an option ... ORG address when assembling to memory.

    Oh, there's ... along the lines of full Pentagon/Scorpion emulation, a full TR-[B ...
    Woody Woody August 2003 Sinclair Miscellaneous
  • New SpeccyDo you think someone should go about creating a new spectrum computer? I'm talking about a spectrum compatible (not an emulator) with the capabiliti…

    ... Speccy equally, yes even the Pentagon, Scorpion, and EVEN (!!!) the Amstrad stuff ... Speccy: the 128 had extra memory and the AY, the +3 ...
    GOC GOC October 2003 Sinclair Miscellaneous
  • an idea that could be very very good...but also very very bad...Hello all! I've been having a chat with some of my friends round here that once loved the spectrum (well...2...as they're all heathens round here...)…

    ... in FPGA, and also had Pentagon/Scorpion/Sinclair spectrum timing modes available ... slightly different z80 than the memory contention or ULA. There aren ...
    b00mzi11a b00mzi11a January 2004 Emulators
  • Emulating the SamRAM on the ZX Spectrum SEGerton Lunter gave me permission to reuse the code, but so far I have not been able to get the software to work in paged RAM banks.

    ... Spectrum SE/ZX Spectrum +3/Pentagon/Scorpion.
    [/quote]

    ... run software written for the pentagon. Which doesn't mean ... machine, which has no contended memory. The SE is more ... wishlist:

    - 128/pentagon timings (selected by some out ...
    lordcoxis lordcoxis October 2005 Emulators
  • RealSpec start upI understand that you can add a start-up line to initiate the version, mode,interface etc; for RealSpectrum but I'm a complete ham with emulators, a…

    ... plus2 -plus2a -plus3 -didaktik -pentagon -scorpion
    -videomode X Y ... enable TRDOS (implicit with -pentagon)
    -trd1 diskfile (1 ... /> -fastmem : disable contended memory emulation
    -nopause : ...
    icabod icabod March 2006 Emulators
<1234567…34>

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HitBox

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pentagon 1.6K 2.3K
scorpion 578 703
memory 21.8K 32.5K
paging 1.7K 2.4K

Related Threads

  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
  • Pentagon/Scorpion Speed of softwareJust wanted to ask if anyone knows if the 7Mhz mode is ever/ or maybe frequently used on the Pentagon or Scorpion Spectrum clones...<br /> <br /> Jus…
  • Scorpion 256K games? Pentagon 512K games?I wondered if there were any games that used more than 128K.
  • Paging MemoryAny idea why this short piece of code doesnt work, just crashes. I am just messing with paging memory in and out (not achived this yet) and reading t…
  • info somewhere about russian Scorpion and Pentagon ports usage ?Is there a place, preferable written in Latin script (but not really mandatory), which describes the complete port assignement of the russian clones …
  • Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS)<br /> <br /> --------------------<br /> In the +3, we have crammed in more than<br /> tw…
  • 128kB software with incorrect memory pagingI search all ZX software using incorrect memory paging via OUT (253),A. This software must write to port data value with D6=1 for compatibility with …
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
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