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Spectrum30 Show in Cambridge, 08th-09th September 2012Hello Spectrum-fans, after many months of preparation we now proudly present what will be the biggest Spectrum venue of the last 20 years. We manage…
... may always need to test if you're on ... return from the interrupt routine. I use the time ... pass of the colour routine is properly synchronised? I ... more compatible. An interrupt routine that takes 75ms to ... something I need to test for before release, but ... -
Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…
... REM DIMMER.B - Screen Dimmer Routine
110 REM
120 ... /> 200 REM
210 REM Test Z80 Code
220 REM ... -
Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…
... you need to change the routine as vram is not linear ... to change so that the routine works no matter what attributes ... you are asking about my routine, then this ld (hl),0 ... , so basically you need to test if it is in pixel ... -
Lame BASIC BEEPer editor - alphaI like music, like BASIC and find all current music utilities complicated. Since I enjoy Sinclair BASIC so much, I came up with a simple BEEPer edito…
... are required then you can test for notes with a period ... , you can have a playback routine as part of your main ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... some kind of a delay routine. Cobra uses the floating bus ... between 0 and the delay routine, it is better that it ... ? My screen copy routine was just a test one that ran bottom ... -
AY-interface for ZX81 (at last ;) )Hi, it exists finally ;) - compatible with the most standard one - ZonX. [url]http://www.sellmyretro.com/offer/details/Brand_New_Sinclair_ZX81_MrX_A…
[QUOTE=ccowley;628231]EightyOne does.[/QUOTE]
I'll have to refresh my memory of how you execute machine code on an 81 and give the routine a test then. :) -
question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…
... should be cancelled but the routine should do a HALT if ... the interrupt a chance to test the key. -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... ], which I used extensively to test with). If you select "SAM ... due to my tiny IM2 routine. Thanks to Phil Kendall for ... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... ], which I used extensively to test with). If you select "SAM ... due to my tiny IM2 routine. Thanks to Phil Kendall for ... -
OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
... location pointed by FIXDEFFN when calling SCANNING from FN code (as ... original fix). A user supplied routine in RAM (maybe in some ... will point to the SCANNING routine. -
OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
... location pointed by FIXDEFFN when calling SCANNING from FN code (as ... original fix). A user supplied routine in RAM (maybe in some ... will point to the SCANNING routine.[/QUOTE]
Well I ... -
Beginner questionThis might sound and be daft.... I've just been reading J Cauldwell's "how to write a Spectrum game" but was thinking of writing something in C as I…
... :
[b]Calling a ROM (or whatever) routine inlining assembly:[/b ... -
Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... , one of) of the diehard test, to make sure the [B ... , you can use the provided routine, call it two times, and ... -
In Java for ZXHi All I am glad to notify you that I have opened the sources of my J2Z80 translator (0.1 version) which allows to use Java toolchain to generate Z8…
... also there is the acceptance test which uses JNI and many ... 's clear that a library routine is free to change regular ... ? Can it set an IM2 routine, and in this case should ... -
OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
[QUOTE=aowen;630520]The routine was 6 INC HLs followed ... stack (HL,DE pushed before calling this fix are still there ... -
Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... means 4 calls to the routine to get the 32 bit ... well. But when using your routine, depending on the order I ... the "long term scattered plot" test (which should cover the entire ... /> Don't know if my routine is OK and this is ... -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... benchmarks then a set of test procedures & data should be ... for the most improbable printing routine?
Judging it might be ... -
Between interrupts and handlersSee there's this short period of time immediately after an interrupt comes but [i]before[/i] the control is transferred to an interrupt handler, abou…
... to write code so a routine can be made to start ... the zx test suite from Jan Bobrowski shows a routine that returns ... -
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…
... address of the interrupt service routine.
The only ... can "simulate" an interrupt by calling directly the interrupt handler, for ... the Z80 to call a routine at address 0066h. With ... ROM (48K machines), the NMI routine does nothing (useful). Devices ... -
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…
... address of the interrupt service routine.
The ... "simulate" an interrupt by calling directly the interrupt handler, for ... (48K machines), the NMI routine does nothing (useful). Devices ... offers a suitable NMI service routine.[/QUOTE]
SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... program to invoke an Assembly routine passing parameters through a BASIC ... initial string, then invoke a routine that will return in HL ... />
I did a quick test and this seems to work ...Multi-sized character screen driverFollowing on from the thread on [url=http://www.worldofspectrum.org/forums/showthread.php?t=24618&page=14]character output routines[/url], I've dug o…
... from a ZX Basic program. Calling the startup point at 61440 ... write a 64 column display routine in asm back in the ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... .jpg[/img]
A routine that returns the vector number ... cycle. Useful, for example, to test for broken interfaces that put ...ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... call followed by address of routine in zx rom.
[/CODE]
to test it, just compile that and ...What is the best way to detect CAPS LOCK?Hi Folks, Not sure what the correct behaviour is here as I do not have access to a real Spectrum. Under BASin, when you press CAPS LOCK on the PC k…
... not an option as the routine is a replacement for INPUT ... well. If I can reliably test for CAPS LOCK then as ...What is the best way to detect CAPS LOCK?Hi Folks, Not sure what the correct behaviour is here as I do not have access to a real Spectrum. Under BASin, when you press CAPS LOCK on the PC k…
... not an option as the routine is a replacement for INPUT ... .[/QUOTE]What happens with your test code if you press Shift ...
