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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…
... effect from Atari-ST (pioneered by Tao from [url="http://www ... of it, but interrupt-based timing routines are more than my ... -
ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…
... triggers horizontal sync, with sources diverging on the exact timing - can ... that's zeroed by the horizontal sync and will autonomously ... That counter increments on horizontal sync.
The ... triggered by horizontal sync and are enabled or disabled by the ... -
Raster Runner inspired by Tron[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0004037[/url] Could well be inspired by the movie [URL="http://us.imdb.com/Title?0084827"]Tron…
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Could well be inspired by the movie [URL="http://us ... -
Timing in loading routinesJust for curiosity I have done some experiments with SAVE command in accurate emulators, and then analyzing the generated WAV and I have obtained lit…
... one pulse.
For sync pulses I have no applied ... one.
All this timing is for 48K machines. The ... -
Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…
... awkward it even throws up timing differences between the 128K and ... do LD (nn),IX followed by LD (nn),HL since the ... 13 cycles (extended to 16 by contention). But then I should ... -
New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …
... sure I got the ULA timing 100% right. We know when ... used to figure this out by paging the shadow screen in ... uses early or late CPU timing, please run the btime test ... -
populated Harlequin Rev.D -> Rev.FHi, I like to sell my Harlequin Rev. D board. I modified it to be identical to Rev. F: * switching regulator instead of linear regulator for DC in …
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* correct sync level at SCART
* correct hsync timing
* correct ... add a SCART cable made by retrocables.es for additional 9 ... -
My attempt to restore the CPU clock signalI know Winston has already got this, but I can't see any thread with details about it. Only wanted to share my (still early) results. I'm not taking…
... module that can be in sync with the internal ULA and ... the same phase as seen by the CPU itsef, i.e ... -
ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…
... source/list]Baseconf[/url] -- raster and ULA contended memory emulation ...
5. Yet no +3 timing emulation, though some provisions are ... both 15kHz or 31kHz raster and cycles through pentagon ... /> Gasman: for some help with raster/contended memory
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Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…
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Another method was published by Toni Baker in part 4 ... value'
LD (HL),A ;by 65536 to give the required ... />
Here's the BASIC timing routine which I use. The ... timings can be significantly effected by the structure of the PROG ... -
New Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike DaillyNew Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike Dailly (Found on SpecNext Facebook-Page) Info and Download (=klick "CSpe…
... CSpect V0.2 ZXSpectrum emulator by Mike Dailly
by AVAST Free AntiVirus ... CSpect V0.2 ZXSpectrum emulator by Mike Dailly
( ... /> Whats working?!??!
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Raster line reporting via registers 30 ... -
Witchcraft: Nirvana, Bifröst and such[url="http://www.rgcd.co.uk/2011/10/buzzsaw-zx-spectrum.html"]"When considering this next to nearly every other ZX Spectrum game though, Buzzsaw is l…
... that exploited clever timing of colour changes within the raster scan beam ... for the ordeal, as reported by Dave Hughes in an interlude ... - according to the notes left by the author - was written in ... -
RGB SCART Lead for +3 Spectrum. Picture issues. (Fades to Black, Rolling, Sync Issues)Hi there, I recently ordered a Sinclair Spectrum 128 +2 & +3 RGB Scart Cable (Ean13: 0705693506845) from coolnovelties.co.uk to use my Sinclair Spect…
... adaptor supplied by Retro Gaming Cables which includes a Sync Separator to ... or tape, the monitor loses sync and the screen picture starts ... being wired up for C SYNC, as I did have an ... -
Fixing a ZX Clone from .ru - 27 years late.Hi there, I've currently assembled another russian clone a "Compact 256 Turbo" from a PCB I bought. The machine appears to be fully functional and o…
... to be largely inspired by either the KAY-256 ... interested in fixing the Timing so I can watch ... on the Compact 256. Timing seems to be largely ... used is "Cool Suxx" by Flash Inc downloadable here: https ... Signals SS (related to Composite Sync I think), !KS, !BS ... -
5C Horizontal timing vs 6C horizontal timing.Hi all, Just considering the timing difference in the video signal between the 5C and the 6C where the 6C ULA seems to have 50% longer horizontal …
... ,
Just considering the timing difference in the video signal ... 50% longer horizontal blanking ( H-Sync ). Does anyone know the reason ... -
New (latest) Version of #CSpect: SpecNext Emulator for Windows, Linux and OSX by Mike DaillyNew latest Version of #CSpect: SpecNext Emulator for Windows, Linux and OSX by Mike Dailly V2.15.2 As seen on Facebook yesterday: [quote]Mike D…
... for Windows, Linux and OSX by Mike Dailly V2.15.2 ... very latest NextZXOS now works by adding new Next Registers $B8 ... estimates for the right HBlank timing are "missed" and the line ... -
ZX81 and ZX80 emulator on Spectrum 128KA couple of weeks ago we were talking about a new ZX81 emulator for the 128K. Someone beat me. More details at [url="http://www.fruitcake.plus.com/S…
... waves. Bit-0 is represented by 3 to 5 (normally 4 ... and Bit-1 is represented by 6 to 9 waves (normally ... /> timing as the data), after which the Data follows imemdiately (no Sync ... />
[ This Message was edited by: GOC on 2003-09-11 ... -
Use MakeTZX to make perfect TZX filesI own the "Heise Sammelkassette 2" with many Spectrum programs, among them the utility "Super Loader" to record files with a higher speed. On this ta…
... MUST know the timing of the Lead tone, SYNC pulses and 0 ... one to the norm. lightmagic by NG isn't one of ... them so it was done by voc2tzx I think ... -
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 …
... way you could tell is by running programs like starquake or ... over heels, which are timed by vertical sync. Set the clock speed ... CPU but with the same timing as before.
All ... />
[ This Message was edited by: cyborg on 2004-08-25 ... -
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... waiting for the raster to pass that point, by using a delay ... wait until the raster has cleared that space, by using HALT, and ... drawing the sprites before the raster gets back to the top ... which to draw your sprites. Timing's vary slightly between models ... -
Sprites flickeringI am trying to write a Spectrum game in machine code. I am still a beginner in programming, however I did much progress recently, i believe. Now I am…
... frame so the TV's raster will draw these partially ... it occurs when the TV raster will not cross any ... , this is "just" a timing issue -- still a non-trivial ... of a sprite are obscured by others so that when ... -- so that the TV raster crosses a minimum number of ...
