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<1234567…34>
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... . The time the /INT line is held low can be ... interrupt routines; see the retriggered interrupts section below.

    ... flag is reset, even if interrupts were enabled beforehand.
    ... 'nnnn'.

    Retriggered interrupts

    If you have ...
    Philip Kendall Philip Kendall July 2004 Development
  • Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…

    ... the SAM Coup? and the Pentagon "the ultimate Spectrum" or "the ... ? Where would you put the line between what you consider a ...
    mcleod_ideafix mcleod_ideafix August 2009 Development
  • "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 ... (like the very first vertical line being darker) ... this seems to ...
    Shockwav3 Shockwav3 March 2013 Hardware
  • ZEsarUX-7.0Hi! I have uploaded a new ZEsarUX stable version :) This is ZEsarUX 7.0 There are a lot of new features added, more than ever! You can downl…

    ... emulation:
    * added TSConf DMA, line interrupt, sprites layers
    * TSConf ... 0000-3FFFH
    Fixed Raster interrupts on ZX-Uno and TBBlue ... /> Fixed window footer when running Pentagon
    Fixed panic screen: now ...
    chernandezba chernandezba May 2018 Updates
  • New discovery on Z80 interrupts.This is to announce the discovery of a new, hitherto unknown, behavior of the RETI and RETN instructions. As everyone knows, the maskable interrup…

    ... immediately after re-enabling interrupts if the /INT line is still active ...
    rich_chandler rich_chandler April 2022 Emulators
  • 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…

    ... did that again with the Pentagon and the page changed OK ... line 1. It does not access any BASIC feature, it disables interrupts ...
    GOC GOC November 2003 Development
  • New game coming soon: PhaetonI have thought that I'll announce it now to build some anticipation ;) I'm almost ready with my new Spectrum game called [B]Phaeton[/B]. It is a g…

    ... is completely desynchronised with interrupts on Pentagon model. Going too fast ... here.[/QUOTE]

    Pentagon is russian ZX clone. Run ... , use 224 Tacts per TV line (as ZX48 ) , 320 TV ... Pentagon generate interrupt at end of screen area = end of line 192 ...
    velesoft velesoft December 2010 Games
  • Precisely timed loops in assemblyI'm looking for a way to make my code stop until the raster has reached the lower screen border (right after having drawn the last pixel line). I und…

    ... do 7 loops for each line of the screen (assuming it ... between 48K, 128K, +2A (and Pentagon) machines, but you can determine ... between two interrupts, to see if I'm on a Pentagon (which ...
    joefish joefish February 2012 Development
  • Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…

    ... the current instruction before servicing interrupts to align to 1T, even ... 'd expect there to be Pentagon code already out there to ... something similar? Combined with display line time measurement, or simply using ...
    obo obo November 2014 Development
  • LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding. I think that there might be more of these routines out there (where-ever-u-r). Isn…

    The line-topic came in the end ...
    Dr BEEP Dr BEEP October 2001 Sinclair Miscellaneous
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…

    ... Machine code.

    The line routine that I have implemented ... out there have a fast line routine, plese email me.
    rtunes rtunes October 2001 Sinclair Miscellaneous
  • 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
  • NEW INTERFACE FOR ZX SPECTRUM!!Hi all zx-maniax! Here is a letter from Polish inventor, Yarek Adamski. He constructed a new brilliant interface for ZX SPECTRUM. Ready carrefuly i…

    ... /> Also can generate interrupts on every screen line as Sam
    do ...
    Yerz Yerz July 2003 Sinclair Miscellaneous
  • 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
  • Multiface ConundrumAnyone know if there is any way to get multiface 3 saved progs to load without a multiface 3? I remember I had a huge (10 tapes) game compilation onc…

    ... , or load in via the line-in.
    For instance things ... be like a +3 type (Pentagon/Scorpion progs) can't be ...
    b00mzi11a b00mzi11a January 2004 Sinclair Miscellaneous
  • Printing at line 22...The last legal line in BASIC is line 21. Using Print #0 allows you to print on line 23, but how does one get access to line 22? Anyone?

    The last legal line in BASIC is line 21. Using Print #0 allows you to print on line 23, but how does one get access to line 22? Anyone?
    Arjun Arjun May 2004 Sinclair Basic
  • 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
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... and move to next char line
    CALL AChar
    line
    LD A,(DE)
    line
    LD A,(DE)
    Interrupts

    ORG 0FDFDH
    robpearmain robpearmain August 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
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... ; *256 TO GET NEXT LINE
    LD A,(DE)
    LINE
    LD A,(DE)
    LINE
    LD A,(DE)
    INTERRUPTS

    ORG 0FDFDH
    robpearmain robpearmain September 2004 Development
  • Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …

    ... ; *256 TO GET NEXT LINE
    INC B
    ... ; *256 TO GET NEXT LINE
    INC B
    ... ; *256 TO GET NEXT LINE
    INC B
    ... ; 0FD00 - 0FDFCH RESERVERD FOR IM2 INTERRUPTS

    ORG 0FDFDH
    robpearmain robpearmain September 2004 Development
  • How can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up. In Assembly Language I want to do the following: I have 1 line of text …

    ... :

    I have 1 line of text (8 Pixel Rows ... want to scroll the whole line left one pixel so that ...
    robpearmain robpearmain October 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
  • Looking for software line-up from two companies...Hello all, I'm one of the maintainers of the Atarimania site at [url="http://www.atarimania.com..."]http://www.atarimania.com...[/url] We have a sim…

    ... towards the Atari 8-bit line of computers (400/800/XL ... like is to have the line-up of titles that were ...
    www.atarimania.com www.atarimania.com December 2004 Sinclair Miscellaneous
  • Thomson Twins Adventure On-line Play #1??Why is this number 1 in the on-line played games rankings?? Number 1 by quite a margin too!! :o Pos / Played / Title 1. / 245 / Thompson Tw…

    ... number 1 in the on-line played games rankings??

    Dave_C Dave_C February 2005 Games
  • emulators that support command line parametersDoes anyone know of any emulator that supports loading .bin files from the command line? What is the format for the parameters? The command line woul…

    Does anyone know of any emulator that supports loading .bin files from the command line?
    What is the format for the parameters?
    The command line would need to except both the file and the load address.
    Kiwi Kiwi September 2005 Emulators
  • ANN: Sam Revival issue 13 out now! [Sam CoupIssue 13 of 'Sam Revival' magazine is now out! Kicking off issue 13 of Sam Revival is a 14 page news section to give a lowdown on what's happening i…

    ... routine for palette changes using line interrupts which is answered with a ...
    Quazar Quazar December 2005 Announcements
  • Off-lineI've been off line for a while (since late November, new baby, moving house, Christmas) so what have I missed

    I've been off line for a while (since late November, new baby, moving house, Christmas)

    so what have I missed
    chop983 chop983 January 2006 Sinclair Miscellaneous
<1234567…34>

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  • Line - a one line arcade gameHi,<br /> <br /> I have published Line, a game written in a single line of BASIC. Thanks to Einar Saukas for additional optimisations, suggestions,…
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  • LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding.<br /> <br /> I think that there might be more of these routines out there (where-eve…
  • line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code.<br /> <br /> The line routine th…
  • 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.
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