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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…
... don't take account the contention. There are two instruction with ... contention, OUT (FE),A that affects ... compared with the teorical (without contention) values. If we take the ... -
Contended Memory woes...Hello All, An iccle problem I have and was hoping one of you fine WoSers could bail me out again... :) I've noticed that my emulator is running sli…
... .org/faq/reference/48kreference.htm#Contention[/url]
I implemented ... -
Where do you stick the stack?...OK, so I've got a fair chunk of ASM code assembled from 24000 mark. The stack shouldn't get very big, just a few PUSHes and POPs of the main regis…
... in RAM (does lower RAM contention affect it a great deal ... -
20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…
... possible, without checking where the contention delays fall - and failed ... our PUSHes to minimise contention, so we probably need ... different point in the contention pattern, we'll need ... graphical representation of where the contention delays fall, so that ... -
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…
... hit all the most awkward contention.[/QUOTE]
I think I ... these back-to-back in contention, the delay from the end ... cycles (extended to 16 by contention). But then I should probably ... , to get ahead on the contention cycle. Assuming that writing those ... -
Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…
... the Z80. It fixes a contention problem (basically all I/O ... (well, now with incorrect IO contention due to the absence of ... -
Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…
... /> There shouldn't be any contention on the bus because that ... damage to my spectrum through contention on the data bus? Are ... -
ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... ), and it doesn't apply contention to take precedence as usual ... -
I dusted my Timex Sinclair 2068 :)Finally I dusted my TIMEX SINCLAIR 2068. It is a very rare ZX Spectrum 48K clone, coming from America. [img]http://mister_beep.republika.pl/ts2068.…
... could swear there were no ?contention? ugly effects in Qchan and ... -
Spec 48K case with a twist...Some people will have heard of the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37746"]Harlequin[/URL] project under way which is a r…
... /forums/showthread.php?t=37746"]Harlequin[/URL] project under way which ... . Too rough to house the Harlequin PCB, I thought.
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, …
... % right. We know when the contention pattern starts, but I have ...Spectrum or Spectrum+ Case and keyboardI am looking for a case to put my forthcoming Harlequin into. Ideally, I would like a rubber key case but would also take a Spectrum+ case. The con…
... case to put my forthcoming Harlequin into.
Ideally, I ...conflicted of hullI just got a spares repairs +2 (grey) from eBay for 3quid. I was going to nick the keyboard for the Harlequin. The only problem is the +2 looks to be…
... nick the keyboard for the Harlequin. The only problem is the ...Serial Number - UpgradedI've just noticed that the Spectrum+ case I got for the Harlequin board doesn't have a serial number. Instead it has 'Upgraded' in red. Would this …
... + case I got for the Harlequin board doesn't have a ... suppose its appropriate for the Harlequin too :)Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... Timex SCLD still applies memory contention at these locations when the ... port F4 when applying memory contention; contention is applied whether the CPU ... there to fix I/O contention.
Timex SCLDs ... have the fixed I/O contention of the 5C112E and the ...Power connector for 48K SpectrumI need a new power connector for an Issue Two 48K Spectrum board, quite an early one. Where can these things be obtained? Someone must know! There mu…
I need a new power connector for an Issue Two 48K Spectrum board, quite an early one. Where can these things be obtained? Someone must know! There must have been a load of these sourced for Harlequin projects, and also for Spectrum fixes.HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …
... , no video ram reading and contention problems.
Simply a transparant ...Wanted: ZX Spectrum rubber or + casesHi all See, now I have a lonely issue 1 board that is naked and need of a case to live in now that I have repaired it (well the main PCB is repaired…
... />
I also have a Harlequin board that will need a ...Building a custom keyboardI'm hit by summer vacation and I thought it would be about time to build my Harlequin board. But I haven't started yet - as I've been looking into wh…
... about time to build my Harlequin board. But I haven't ...Tinkering with DMASo, some afternoon tinkering... [img]http://photo.alioth.net/tmp/dma_small.jpg[/img] The purpose of this all is to see what's possible using the Xi…
... key, 128K +2/+3 and Harlequin). You may note I've ...ZX-Uno prototype v2 for saleHello. I have some unmounted ZX-Unos for sale. The mounting is not as easy as the throw hole in the Harlequin clone, the components are SMD and they …
... the throw hole in the Harlequin clone, the components are SMD ...Zero 0.7 / Zero 0.6.5 releasedAfter months of grueling work, I?m proud to announce the Vanilla version of Zero, which is a regular Windows version of the emulator. I?ve tried to m…
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…
... or border effects.
Harlequin clone maker, emulator writers: for ...Fuse tests - INC BC causes contention delayHi all, In the FUSE test suite it has the following for the output of opCode 0x3 (INC BC): 0 MC 0000 4 MR 0000 03 4 MC 0001 …
Hi all,
In the FUSE test suite it has the following for the output of opCode 0x3 (INC BC):
0 MC 0000
4 MR 0000 03
4 MC 0001
5 MC 0001
Where this is defined by:
...Why does a "Vega" category exists?I mean... shouldn't we have a "hardware clones / emulators" category? There are more spectrum compatible computers, like all those russian clones, th…
I mean... shouldn't we have a "hardware clones / emulators" category? There are more spectrum compatible computers, like all those russian clones, the Harlequin and (coming soon) the ZX-Uno.No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…
... wand to remove the memory contention, what software would break?
So for my first trick...I'm sure people have already used the AD724 or AD725 on other 8 bit machines, and i know the Harlequin uses the 724, but not seen anyone trying to us…
... machines, and i know the Harlequin uses the 724, but not ...Which 16-Bit games did you always want an 8-Bit conversion of?Harlequin is a strategy-based platform game for the Commodore Amiga and Atari ST released in 1992 by Gremlin Graphics. https://www.youtube.com/wat…
Harlequin is a strategy-based platform game for the Commodore Amiga and Atari ST released in 1992 by Gremlin Graphics.
https://www.youtube.com/watch?v=S14YlFYHV0ITommyGun with Debugginghttp://goo.gl/HfSXev?gdriveurl Ok, so this is a pretty big release for me and I have added a lot of stuff into the code editor. Mainly of course …
... .
Does not have memory contention.
Does not have sound ...
