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<1234567…34>
  • russian pentagon 128k for saleis anybody interested in russian speccy clone: Pentagon 128K, with tr-dos, ay, have a couple of working motherboards.

    is anybody interested in russian speccy clone:
    Pentagon 128K,
    with tr-dos, ay,
    have a couple of working motherboards.
    danrybs danrybs December 2002 Sales
  • Sync-buzzer, interrupts and general confusionBeen wittering on about this in the Misc group, but thought it was best discussed here. Basically been trying to recreate the Sid-Sound effect from A…

    ... a good tutorial on using interrupts? As soon as someone mentions ...
    b00mzi11a b00mzi11a September 2003 Development
  • Tough paging questionOK... Take this: 1. We have a program compiled and run from within GENS under a Pentagon 128K environment. 2. The program works perfectly. 3. We sav…

    ... from within GENS under a Pentagon 128K environment.
    2. The ... IDENTICAL to that for the Pentagon.
    7. The program does ... use the ROM.
    8. Interrupts are disabled all troughout the ...
    GOC GOC November 2003 Development
  • Pentagon interface news from VELESOFTIt's from Xagon's board. It is about new interface for Speccy - it make Your comp compatible with Pentagon (and not only) and also it gives You up t…

    ... make Your comp compatible with Pentagon (and not only) and ... (without changes)

    - Pentagon 512kB mode (all memory is ... (see below)

    - Pentagon 1024kB mode (slow and fast ...
    - in ZX128+2 or Pentagon 512kB modes there is possibility ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…

    ... 1 and enable
    ei ;interrupts. Jump to 0056 in ROM ...
    ekoman ekoman July 2004 Development
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... 3.54 MHz, so interrupts are still generated every ... interrupt routines; see the retriggered interrupts section below.

    interrupts were enabled beforehand.
    ... 'nnnn'.

    Retriggered interrupts

    If you ...
    Philip Kendall Philip Kendall July 2004 Development
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …

    ... and I want to use interrupts to measure time, draw the ... keyboard etc. What kinds of interrupts are there?

    At ... they were talking about maskable interrupts vs NMI. Are those generated ...
    Erlstoned Erlstoned August 2004 Development
  • 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
  • Case for Pentagon 1024SLSee topic ... since using an ATX case for a spectrum would be boring in my opinion I'm looking for one of the below cases (or something in the same s…

    ... ://www.homecomputer.de/images/machines/Pentagon.jpg[/url]
    [url]http ...
    Shockwav3 Shockwav3 October 2006 Wanted
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... a little confused regarding the interrupts on the Spectrum. If I ... />
    I suspect that the interrupts does for example keyboard scanning ...
    Rickard Rickard May 2007 Development
  • 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 …

    ... the russian clones Scorpion and Pentagon ? Specially the RAM bank usage ...
    secarica secarica October 2007 Hardware
  • Build your own Pentagon 1024SLAlexey aka KingOfEvil was so kind to give me an english manual for the Pentagon with most (except for the floppy controller) chips adapted to "wester…

    ... an english manual for the Pentagon with most (except for the ... interested in building your own Pentagon the link is here [url ... ]http://pentagon.nedopc.com/ver22_e.rar[/url ... of you wants to order Pentagon 1024SL V2.2 boards, lemme ...
    Shockwav3 Shockwav3 November 2007 Hardware
  • Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…

    ... , so I added support for Pentagon timing instead, so I can ...
    Patrik Rak Patrik Rak November 2007 Emulators
  • InterruptsI need help emulating interrupts. My z80 core currently emulates all un-prefixed opcodes and the CB opcodes. I thought I would start on emulating co…

    I need help emulating interrupts.

    My z80 core ... to start - my understanding of interrupts is not great (having never ...
    MadDoc MadDoc July 2008 Emulators
  • Pentagon 1024SL 2.2As I'm getting another Pentagon board, I've decided to sell my first one, which is in a fully functional state, yet has 2 fixed traces and a few part…

    As I'm getting another Pentagon board, I've decided to ...
    Shockwav3 Shockwav3 September 2009 Sales
  • Need help with interrupts againI'm fighting to understand how interrupts code handling works I'm trying to set my simple own interrupt routine, as I don't want to be dependent on …

    ... 'm fighting to understand how interrupts code handling works

    ;each interrupt automatically disables interrupts, so they must be enabled ...
    Ralf Ralf November 2009 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…

    ... />
    Port 0x1FFD on the Pentagon switches memory banks as described ... this be compatible with the Pentagon's port 0x1FFD?
    ajmoss ajmoss August 2010 Hardware
  • Speccy2010 - pentagon emulation using GlukIs anyone here familar with Speccy2010 (FPGA Russian Sinclair Spectrum clone). ? I'm using Pentagon mode on Speccy2010 (it uses something called Glu…

    ... ). ?

    I'm using Pentagon mode on Speccy2010 (it uses ...
    Hercules Hercules April 2011 Hardware
  • Pentagon: publicationPentagon: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003656[/url] Was a type-in published in the german magazine.

    Pentagon:
    [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0003656[/url]
    Was a type-in published in the german magazine.
    LCD LCD May 2012 Infoseek database
  • Simple explanation of interrupts (in the context of Z80/Speccy)I wondered if somebody on here could explain in simple terms how interrupts work on the Speccy and where interrupts are source from. Are they a natur…

    ... explain in simple terms how interrupts work on the Speccy ... via the ULA? Are Speccy interrupts per-frame, can you schedule ... Are there different types of interrupts that can instantly jump to ... hearing stuff about non-maskable-interrupts in the case of resetting ...
    takapa takapa June 2012 Development
  • 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
  • "Attribute embosing" on Pentagon 128I'm still in the progress of build my 2 Pentagon 128 machines and everything seems to be sorted out by now :) Except for 1 more or less minor issue. …

    ... progress of build my 2 Pentagon 128 machines and everything seems ...
    Shockwav3 Shockwav3 March 2013 Hardware
  • Kempston Joystick on Pentagon 128As most of you know, I'm currently in the process of building a Pentagon 128, good news first, almost everything is working nicely, except for the ke…

    ... the process of building a Pentagon 128, good news first, almost ...
    Shockwav3 Shockwav3 March 2013 Hardware
  • Pentagon 1024SL 2.2 kits (maybe?)Hey there, I'm currently getting my Pentagon 1024SL 2.2 back to work and while looking for spare ICs I found a really cheap source for CPLDs and TTLs…

    ... /> I'm currently getting my Pentagon 1024SL 2.2 back to ...
    Shockwav3 Shockwav3 March 2013 Sales
  • Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…

    ... /> + Added Kempston Mouse emulation to Pentagon 128K.
    + Reworked sound emulation ... (Arm73).
    - Ignore re-triggered interrupts just after loading a SNApshot ...
    Arjun Arjun July 2013 Emulators
  • Pentagon 128 (1991) on eBayNot my auction and sadly it says nothing about the condition - but considering how rarely those turn up, maybe someone here might be interested. [ur…

    ... -clone-of-ZX-SPECTRUM-128-PENTAGON-128-from-1991-/321341068138?pt ...
    Shockwav3 Shockwav3 March 2014 Sales
  • Pentagon 1024SL 2.2 + NeoGS (Rev. B) + TSFMSelling the above. NeoGS is perfectly working Pentagon 1024SL 2.2 needs some attention TSFM needs a new CPLD (included) and possibly new YM2203 chip…

    ... /> NeoGS is perfectly working
    Pentagon 1024SL 2.2 needs some ... the NeoGS, 60? for the Pentagon, 15? for the TSFM
    Shockwav3 Shockwav3 November 2014 Sales
  • Pentagon 1024SL 2.2 woesHey there,<br>I'm currently trying to get my Pentagon 1024SL 2.2 up and running for the second time.<br>Right now it's showing me the screen one woul…

    ... currently trying to get my Pentagon 1024SL 2.2 up and ... /> - used the ROM from my Pentagon 128 (pulling one of the ...
    Shockwav3 Shockwav3 May 2015 Hardware
  • Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…

    ... and I want to use interrupts. The avilable documentation doesn't ... can I do my own interrupts on a 16k machine? Is ...
    evilpaul evilpaul August 2017 Development
  • Pentagon 512 Mr Gluk Reset Service 6.3RHello, I managed to get some Russian Clones working in Fuse and this is the screen I get when I emulate the Pentagon 512. Can anyone explain wh…

    ... get when I emulate the Pentagon 512.

    Can anyone ...
    jonesypeter jonesypeter September 2017 Sinclair Miscellaneous
<1234567…34>

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Related Threads

  • russian pentagon 128k for saleis anybody interested in russian speccy clone:<br /> Pentagon 128K,<br /> with tr-dos, ay,<br /> have a couple of working motherboards.
  • Sync-buzzer, interrupts and general confusionBeen wittering on about this in the Misc group, but thought it was best discussed here. Basically been trying to recreate the Sid-Sound effect from A…
  • Pentagon interface news from VELESOFTIt's from Xagon's board. <br /> It is about new interface for Speccy - it make Your comp compatible with Pentagon (and not only) and also it gives Yo…
  • IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome.<br /> <br /> Notably:<br /> <br /> * How long does the 48K ULA hold /I…
  • Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
  • 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…
  • InterruptsCan someone help with providing some info or a link about IM 2. I know I need to create a vector table and want to store this as high in memory as po…
  • Scorpion 256K games? Pentagon 512K games?I wondered if there were any games that used more than 128K.
  • Case for Pentagon 1024SLSee topic ... since using an ATX case for a spectrum would be boring in my opinion I'm looking for one of the below cases (or something in the same s…

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