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<1…13141516171819…34>
  • C# emulatorHi, I wanted to branch out and get a little better with C# so I think I need something meaty to do to keep me going....so an emulator seemed a reaso…

    ... opcode, test the T-States counter. When it goes over 69888 ... -States) from your T-State counter. This will end up non ... /> When you've triggered your interrupt (if necessary) then you just ...
    Dunny Dunny March 2007 Emulators
  • My emulator doesn't take "commands"Hi This is probably a question that is very hard to answer, but perhaps some of you have/had the same problem. In my own emulator (that I have built)…

    ... to be useful to the program and it's also likely ... this was written (differences in interrupt response across z80 versions, the ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Emulators
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... to compile a "Hello world!" program for my platform, and test ... (just low level stuff like interrupt handlers and the routine that ...
    Winston Winston March 2007 Development
  • Retargetting the Z88dkWell, I'm asking here because it's come up before, and I assume someone here might know the answer... I'm trying to retarget the Z88DK for the Z80 b…

    ... to compile a "Hello world!" program for my platform, and test ... (just low level stuff like interrupt handlers and the routine that ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…

    ... specific number of tstates after interrupt. Sounds to me like that ... this I use a bas2tap program and add it to the ...
    icabod icabod March 2007 Emulators
  • Atic Atac 128k version?Can anyone confirm that the version of atic atac in the 'UPTG : The Complete Works' is in fact 128k compatible? that is can you load it on a spectrum…

    ... prewritten program.
    POKEing an address will only work if an Interrupt ...
    BloodBaz BloodBaz March 2007 Games
  • 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…

    ... low and M1 low = an interrupt acknowledge, so just using IORQ ... board. I used this test program:

    [code]
    10 ... 't go low on an interrupt acknowledge, so just IORQ low ...
    Winston Winston April 2007 Hardware
  • 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…

    ... low and M1 low = an interrupt acknowledge, so just using IORQ ... board. I used this test program:
    [code]
    10 LET ... 't go low on an interrupt acknowledge, so just IORQ low ...
    Marcelo Marcelo April 2007 Hardware
  • Need advice choosing one of these optionsA few spanish friends are willing to help me build and program the ethernet interface for the Speccy. Here are the possibilities. Any advice would be…

    ... other projects :-)

    For interrupt mode 2 stuff, on my ... Z80 CTC (just set the counter to 1 for the channel ...
    Winston Winston April 2007 Hardware
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... at the start of the interrupt, and using the stack so ... , as it expected no further interrupt to occur until the next ... bright bit from a Multiface program (as I did) you can ...
    obo obo April 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... at the start of the interrupt, and using the stack so ... , as it expected no further interrupt to occur until the next ... bright bit from a Multiface program (as I did) you can ...
    rich_chandler rich_chandler April 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... at the start of the interrupt, and using the stack so ... , as it expected no further interrupt to occur until the next ... bright bit from a Multiface program (as I did) you can ...
    zxspecticle zxspecticle April 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... at the start of the interrupt, and using the stack so ... , as it expected no further interrupt to occur until the next ... bright bit from a Multiface program (as I did) you can ...
    ChuckieEgg ChuckieEgg April 2007 Games
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... and play back via an interrupt routine (simply call an address ... 't interfere with the main program.
    BloodBaz BloodBaz April 2007 Games
  • How did people write large assembler programs on real Spectrums?I have been wondering how people did their development back on real Spectrums. If you should write a large program, there would first be an assembler…

    ... would first be an assembler program in memory, then the assembly ... all ready, one compiled the program once again, took its ... for structures here, stack here, interrupt handler here, etc. Then one ... addresses via EQU for the program, recompiled it one last time ...
    Patrik Rak Patrik Rak April 2007 Development
  • 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…

    ... . "Generating a maskable interrupt" means the hardware pulls ... code executed inside an interrupt service routine (such as ... any program fragment that is being executed, all interrupt service ... program can run as if nothing ever happened.

    The interrupt ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • 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…

    ... there is a 24 bits counter for the computer up-time ... /> The answer is if your program doesn't use it you ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • 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…

    ... for a maskable interrupt.
    DEC BC Decrease the counter.
    LD ... A,B If the counter is thereby
    OR C ...
    Rickard Rickard May 2007 Development
  • Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…

    ... 555 timer, and a johnson counter to keep track of where ... can use the Speccy to program flash chips with it :-)
    Winston Winston May 2007 Hardware
  • Beautifully programmed gamesJust watching the bobby bearing tzx and admiring the beautiful programming involved. Which other games would you say had asthetic programming opposed…

    ... at the start of the interrupt, and using the stack so ... , as it expected no further interrupt to occur until the next ... bright bit from a Multiface program (as I did) you can ...
    wokani wokani June 2007 Games
  • Game OptimisationBelow is a section of code Im using for movement enermy display and collision detect. What happens is that you move the sight with ,.qa and space do…

    ... z=general counter
    [/QUOTE]

    Now what the program does ...
    Toxitalk Toxitalk June 2007 Sinclair Basic
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... to have this in an interrupt service routine so that the ... ) can occur in the main program without worrying about it.
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Tapir feedback[QUOTE=jpablo]Are you planning to add support for decoding VOCs/WAVs from the tool as well?[/QUOTE] Since Luca offered help, we may together even so…

    ... running a disk to tape program on the Speccy, it takes ... is different (maybe use a counter and name the files "1 ... basic listing from within the program would be nice too, maybe ...
    DEATH DEATH June 2007 Emulators
  • A challenge thats probably impossiblehere's a challenge for all you coders. Given a snapshot, is it possible to create a program to sniff out the original start address for the game that…

    ... it possible to create a program to sniff out the original ... typical init code (stack, border, interrupt)
    the third is to ...
    Fikee Fikee June 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    [code]
    1 LET n=191: BORDER 0: PAPER 0: INK 7: CLS : DIM i$(3,9):
    FOR i=1 TO 3: LET i$(i)=" # # # # ": NEXT i: LET p=16: LET b=0: LET a=p:
    LET s=0: FOR y=0 TO 14: LET e=y/2=INT (y/2): FOR x=(1-e)*24 TO e*24 STEP e*2-1:
    PRINT AT 21 ...
    Digital Prawn Digital Prawn July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... instruction at address 0xd4d4 (interrupt service routine entry)
    interrupt routine
    [/code]
    interrupt service routine scroll_isr().
    interrupt routines with the generic isr as the program' ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... 14000 cycles from the interrupt to the top of ... = 55216 cycles from the interrupt to when the raster catches ... labels in your C program and all the labels ... subroutine in the main program) and take not of ... on runtime while the program runs (average and maximum ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... will be looking into fixing. Program notes follow:-

    program now it's been ... br />
    Problems with above program
    ----------------------------

    It ... [code]
    a generic loop counter
    b
    c
    Digital Prawn Digital Prawn July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    ... on is found then the program exits. I could find no ... -liner it always terminates the program.

    Therefore you can ... value of a FOR loop counter via a LET statement just ... handy way to change the program flow according to a condition ...
    Digital Prawn Digital Prawn July 2007 Development
  • Platform Game Designer 2?I've started tinkering around with some code today and have decided upon a number of handy little features that it would be nice to have. For the li…

    ... heavy going and horrendous to program in places. Much of the ... got object 0
    Reset counter
    If on screen 3 ...
    jonathan jonathan July 2007 Development
<1…13141516171819…34>

Latest Posts

  • European Software Titles with an English version
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  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
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    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
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HitBox

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program 21.8K 31.9K
counter 2.9K 4.2K
interrupt 2.6K 4.5K

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