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M1 LOADING between TZXs ?Splat! (Alternative) from TZX Vault is a M1 LOADING snapshot file. Is this a mistake, or is there some reason for this ? Best wishes, Cristi
Splat! (Alternative) from TZX Vault is a M1 LOADING snapshot file.
Is this a mistake, or is there some reason for this ?
Best wishes,
Cristi -
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…
... forum search for the word 'M1' pulled back no hits, ... which Z80s had the faulty M1 lines, and what was the ... stick my scope on the M1 line this weekend, but ... looking for timing issues with M1 (for the '138 to ... decode the OUT port address, M1 must be high, WR ... -
Faulty M1 LineHello, I've got a new DivIDE but it's not working with my Spectrum 48k+. I've got a sneaking suspicion that it's a faulty M1 line. Is there any way …
... that it's a faulty M1 line. Is there any way ... -
Faulty M1 pin on a Z80 made from SGS?It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is no…
... Interface 1 and DivIDE use M1 signal as input (among others ... I have looked at the M1 signal using a scope, the ... , didn't SGS implement the M1 pin on their Z80's ... -
A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…
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…
... for a Z80 without the M1 problem.
I only ... att all.
This M1 problem is new to me ... a Z80 which has this M1 problem maybe?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 …
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But the bad M1 problem that seems to occur ... and low) by the M1 output could be measured relative ... ://photo.alioth.net/Scope/M1-dc-coupled.png[/img ... in time with where M1 should actually move, but ... ://photo.alioth.net/Scope/M1-with-spectranet.png[/img]< ...Issue 4S bad M1Never ever seen a 4S with a bad M1 line before today [url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img…
Never ever seen a 4S with a bad M1 line before today
[url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img][/url]
But it is!MISSING M1 LINE ON +48????I was posting questions about my DIVMMC enjoy not working on one of my +48`s and have now got round to testing if its cpu related.Trouble is the one …
... a little about the faulty m1 line and i think i ...Faulty M1 or no?Hi all, OK, so I've got an issue 4B which was pretty much untouched and appears to work fine (starts up OK, loads games, 23732 and 23733 both retu…
... I thought, "aha! a dodgy M1 line", so I removed the ...Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![quote]Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![/quote] Err, why? If you are trying to use an interfa…
[quote]Of course, when the M1 line of the Z80 CPU ... Z80 MPU with a working /M1 line, yes of course.
M1 line. So it’s irrelevant ...Soccer SupremoHi :) Did a quick check through the MIA list the other day and noticed straight away a title (Soccer Supremo) I knew I definitely had and secondly k…
... well? I only have a m1 back-up so would this ...Multiface One vs. Multiface 128?Hello all! Does anyone happen to know how the Multiface One and Multiface 128 differs from each other? I'm using a 48k Speccy and bought a M1 which …
... 48k Speccy and bought a M1 which then turned out to ...Great fire of londonHad someone sucess loading this game into a emulator? I tried ZX32, RS and R80. Okay, the M1 version works, but does anyone really need a multifaced …
... and R80.
Okay, the M1 version works, but does anyone ... "Perfect" TAP version is a M1 shit, and the non-perfect ... TAP version is M1 too.
Anyway, if it ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... 0x0038:
* M1: 7 tstates: acknowledge the interrupt ... routine:
* M1: 7 tstates: acknowledge interrupt and ... 'n':
* M1: 6 tstates: acknowledge interrupt and ... cycles:
* M1: 6 tstates: acknowledge interrupt.
Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…
... Technology ISBN 0835943925):
M1: OpCodeFetch(4T) [i.e. the ... down as follows:
M1: OCF(4T) [i.e. the ...MultifaceOne Vs Multiface128Is there any advantages to having a Multiface128 as opposed to a MultifaceOne for the 48k rubber speccy? Currently I have the M1 and sometimes get s…
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Currently I have the M1 and sometimes get some freezing ...TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... /> Everything is working fine, the M1 line is OK (multiface128 is ...Multiface 1 and 128I have a multiface one and recently got a toast rack 128. Can I use the M1 with it or do I need to get a M128?
I have a multiface one and recently got a toast rack 128. Can I use the M1 with it or do I need to get a M128?A vexatious questionThis is kind of a follow-up to a question about RST #8 and hardware that I wrote in the development forum a while ago. To summarize that: certain ha…
... hits 0x0008 (i.e. an M1 cycle with 0x0008 on the ...Multiface 1 and copy protectionI was piddling around on my speccy last night getting my Specdrum running. I had already put the software on microdrive via my Multiface 1. Anyway, …
... it last night without the M1 attached as I had my ... protection requirement of having the M1 attached to run backups made ...It's a trap!So I got a CPLD (not the eventual one I want to use for the ethernet project - rather, one I actually have here and now, an XC9536 in a PLCC44). And…
... ". That is, if I see M1 active and an address of ...Adding new peripherals to FuseI'd like to add an execution trapper/ROM pager to Fuse so I can do ROM debugging on the PC rather than on the Spectrum. Basically, I need to trap exe…
... the leading edge of the M1 cycle for a handful of ... the trailing edge of an M1 cycle for page out.
Faulty Spectrum (help requested)I have an issue 6a specci. It's Z80 has the fault m1 line problem (Multiface 128 does not work). So I decided to put in a new Z80 but unfortunately i…
... 's Z80 has the fault m1 line problem (Multiface 128 does ...DivIDE+ and 128K HeatsinkI got my DivIDE+ yesterday and i tried it on a 48K+ at first, it worked marvelously on it, no problems at all. Today i desided to try it on my 128 H…
... would say "its a faulty M1 line of the Z80" but ... i had with a faulty M1 line a year ago.
M1 faulty line.
The same ...start up issuesive got a new laptop, a toshiba tecra m1, and i need to format the hard drive. but on start up it doens't give me an option to press F2 or what ever.…
ive got a new laptop, a toshiba tecra m1, and i need to format the hard drive. but on start up it doens't give me an option to press F2 or what ever. what am i doing wrong?Robo Jock!!Check this funny vid out. Martin Buehler has developed a prototype jockey ridden hopping robot that controlled forward speed, hopping height, and pit…
... ]http://www.martinbuehler.net/videos/M1.wmv[/url]Spectrum Ethernet updateWell for those of you who don't follow the news section on the project page, here's a quick update...and a request. Development has slowed a bit, si…
... Spectrum will need a working M1 line. You don't need ...Google Books - John and Kate GrantThe very rare "ZX Programmer's Guide" by John and Catherine Grant - the two directors of Nine Tiles has appeared in preview mode on Google Books. [u…
... =A2I0AAAAIAAJ&pg=PT1#PPT1,M1[/url]
(sorry about ...
