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48K's and bad DivIDE compatibilityI have had some 48K boards and complete machines in the past which didn't work fully with a DivIDE interface. The reason for that always was a Z80 pr…
... that always was a Z80 processor having problems with ... br /> I replaced the Z80 with spare ones, and the ... but after replacing the Z80 I still have problems.
I tried several Z80 models, some of which I ... letting the 48K beep or reset.
So ... -
Z80 emulation C source with a permissive license?Could anyone recommend a good (all opcodes, proper timings) Z80 emulation code in C with a simple permissive non-viral license? Something without a w…
... good (all opcodes, proper timings) Z80 emulation code in C with ... interested, I found a LGPL Z80 core, not perfect, but still ... -
Hudson Soft releasing games in Japan?I was wondering if Hudson Soft actually released three games originally for the Spectrum in Japan?? These games were released by Sinclair research in…
I was wondering if Hudson Soft actually released three games originally ... -
Bad Reset Line on +3eHello there my fellow WoS'ers, Alas I have not been about much over the last couple of weeks, got hit by the flu, headcold and a rather nasty throa…
... Spectrum +3 with a Bad Reset line - Its that bad even ... the reset button doesn't work... Unfortunately ... -
Divide kind of working - could do with some helpHello all. Sorry for asking what might be things which have already been discussed, I did try and search honest gov... So, have a 128 toast rack (th…
... - no keys work?
2. Reset and hold space - reboots to ... /> Should it load .sna and z80 as it freezes
Four ... -
Intermittent reset on 48K (issue 4S)I'be been fighting an intermittent selfreset the whole day. Changed ULA - did not help. Tested TR6 as i could and compared the reading with another…
... and either get a self reset (most likelly) or a freeze ... -
Z80 not-wroking with divIDEHi mates. I have two questions, maybe somebody could know. I realize some ZX Spectrums don't work with divIDE due to specific Z80 chips. 1) if …
... with divIDE due to specific Z80 chips.
1) if ... I change the Z80 - into another one - will my ... Spectrum with divIDE-non-compatible Z80, no version of divIDE at ... -
CMWC random number generator for Z80Seeing the interest regarding the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=23070"]Xor-Shift random number generator for Z80[/URL]…
... -Shift random number generator for Z80[/URL], I became curious how ... -Multiply-With-Carry) RNG for Z80. These generators are based on ... /> To make it suitable for Z80, I have chosen base b ... tests. Here is the corresponding Z80 variant, which returns the 8 ... -
48k+ CPU SocketThink I've bitten off more than I can chew... After the desoldering my z80 went without incident, no damaged pads, tracks etc. I expected the socket…
... />
After the desoldering my z80 went without incident, no damaged ... is no response to the reset button and sometimes the pattern ... -
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…
... a natural feature of the Z80, or are they instigated via ... -
+3e Strange IssueHello there my fellow WoS'ers I am absolutely perplexed by the following problem, I am hoping that someone more enlightened than I can help [I](no…
... /> [INDENT]8bit IDE adapter
Z80 CPU (new)
512MB CF ... thought this to be a RESET line fault, so I replace ... C13 - good news is the RESET button now works.
Known Z80 M1 problems?I got an email yesterday from someone asking for a Z80 without the M1 problem. I only know about the fanout problem that many Z80's are suffering of…
... from someone asking for a Z80 without the M1 problem.
Z80's are suffering off, causing ... ' a ZX Spectrum with a Z80 which has this M1 problem ...Zymosis -- WTFPL'ed Z80 Emulation Corebreaking news! i'm back with another useless project: new Z80 emulation core written in pure C! i hear you screaming: "oh, no! WHY?!" let me tell yo…
... with another useless project: new Z80 emulation core written in pure ... , i can't test FUSE z80 core, but i think that ... /> also, zymosis passes all FUSE z80 tests (i'll try to ...Anatomy of a bad M1No, not the motorway (although at times the tarmac M1 goes about as well as this one...) But the bad M1 problem that seems to occur most with issue …
... the M1 line on the Z80. The Z80 is a Zilog made ... , but for this reason the RESET line from the Spectrum is ... ).
In summary, a Z80 with a bad M1 is ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... /> Sofar we found:
- Bad Z80's because of poor fanout ... (signal strength)
- Bad Z80's because of defective M1 ... , but NMI does nothing or reset the machine).
After ...Moar TR-DOS to tape conversions!I have posted three lame disk-to-tape conversions through snapshotting before, now (I guess) it's time to bring the rest of my complete collection he…
... normal loading speed and the Z80 snapshot before its' conversion.
Soft[/URL][/B] - Another port of ...Interview with Steve Wetherill (Odin)Hi you all!!! Here is the interview done to STEVE WETHERILL (Nodes of Yesod, Robin of The Wood, Arc of Yesod, Heartland... ?Odin!) and published at […
... 480Z (on which I learned Z80 assembly language), and the Cyber ... guess I must have a soft spot for it! It was ... BBC Model B computers, with Z80 second processors running CPM. We ...redirecting Z80 sub-routine CALLsI'm working on changing a TR-DOS disk program to work from standard +128k tape and thought that rather than painstakingly working through the code ma…
... way to code this in Z80 assembler to work automatically, or ...z80 Code Profiling (RESOLVED)Hi All, Just a quick question to ask if there is any way of profiling z80 Code for the Speccy??? I'm trying to write a piece of software and I curr…
WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... the multiplexer outputs from the Z80 side are higher. Hope that ... -on. If the RC-generated reset pulse is not wide enough ...Help with Xpectroid[URL="https://play.google.com/store/apps/details?id=com.seleuco.xpectrum&hl=es"]Xpectroid[/URL] has 128k model as starting setting. Some Z80 files …
... starting setting.
Some Z80 files in 48K can't ... TZXs as I make a reset in 48k and load them ... . If I make a 48k reset and load the file, it ...Replaced Z80 now a very dark screen!Today I dag out an old issue 3 that ive known for a long time has a faulty Z80 (M1 line) so I heat gunned it out, socketed it and replaced it with a …
... long time has a faulty Z80 (M1 line) so I heat ...Excel -> OpenOffice Z80 spreadsheet problemI tried transferring my [url=http://www.users.globalnet.co.uk/~jg27paw4/pourri/z80times.zip]Z80TIMES[/url] spreadsheet from Excel to OpenOffice the o…
... correct, as it looks up Z80 command timings from Einar's ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... whole contended RAM bank, the Z80, ROM and PAL without luck ... /10th of a second after reset, then stops. M1 does the ...Action Soft wrong countryI think they are from Spain, I can not see 2 spanish programmers coding in cold Russia :p http://www.worldofspectrum.org/infoseekpub.cgi?regexp=^Act…
I think they are from Spain, I can not see 2 spanish programmers coding in cold Russia :p
http://www.worldofspectrum.org/infoseekpub.cgi?regexp=^Action+Soft$&loadpics=3Z80 new old stockHi. I found this on eBay but ... is there a way we could know they don't hav a faulty M1 line? [url]http://www.ebay.com/itm/Zilog-Z80-CPU-Z0840004PS…
... ://www.ebay.com/itm/Zilog-Z80-CPU-Z0840004PSC-New-Sinclair-ZX81 ...Job lot of various hardware & software for sale.Hi, I put a post up a while ago and sold a lot of my stuff but I've still got a boxful left over, is anybody interested in taking it off my hands? I …
... )
stop the express - hudson soft
snodgits - sparklers
how ... (1 boxed, 1 not)
reset switch
super switch saver ...High Score ASCII array reset ?Hey guys, Noob alert! I'm working on my first game and I'm having problems with the high score on the second time through the game loop. My high …
... , the high score does not reset.
I wrote a ... this, but it doesn't reset the ASCII values back to ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... which current ones in the Z80 set would you replace?
