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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 -
speccy repairsHi ive just got my old speccy 48k down from the loft , and it loads up ok but i think my tv connection is knackered , anyone know who still repairs s…
Hi ive just got my old speccy 48k down from the loft , and it loads up ok but i think my tv connection is knackered , anyone know who still repairs spectrums , in scotland , -
RepairsDoes anyone know anybody that repairs modified (chipped) XBoxes in South Wales? I think it's just a power socket problem as it's dead.
Does anyone know anybody that repairs modified (chipped) XBoxes in South Wales? I think it's just a power socket problem as it's dead. -
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 ... -
Parts & RepairsHi, For those who may not have been following other recent threads, I was recently handed a huge[1] box of ICs, for a wide variety of 8-bit machines…
... therefore also offer to attempt repairs to any spectrums for anyone ... -
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…
Speccy repairs?I've finally got round to testing all the various Spectrums that I seem to have accumulated over the years and discovered that "my" two machines (i.e…
... don't know who does repairs as I wouldn't really ...Specturm Repairs / Upgrades in the USAHi, Bit of a longshot but I was wondering if there is anyone in North America that does Spectrum Repairs / Upgrades? Im looking to get the roms on m…
... North America that does Spectrum Repairs / Upgrades? Im looking to get ... someone in NA that does repairs, to save on postage!
boxed 48k for repairsSelling a boxed 48k speccy + with all leads here is the link to the ebay listing. [url]http://www.ebay.co.uk/itm/251050350027?ssPageName=STRK:MESELX…
... it is being sold as repairs. Thanks for lookingKnown 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 ...Spectrum/QL/ZX81 parts for spares and repairsI?ll be listing another job lot of parts for spares and repairs for Spectrum, QL and ZX81 on Ebay today: [img]http://up.picr.de/20717976ru.jpg[/img]
I?ll be listing another job lot of parts for spares and repairs for Spectrum, QL and ZX81 on Ebay today:
[img]http://up.picr.de/20717976ru.jpg[/img]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 ...Microdrive problem?I recently aquired a micro-drive, Interface 1 and some brand new cartridges + the original manual, so i thought i'd rig it all up and see what it …
... of your Spectrums have faulty M1 line as it is very ... . It is still good for repairs and parts.Semi-Dead Spectrum - Help RequestedI have finally got my hands on my two old Spectrums - neither of which work, but ideally I hope to get both of them working again. Spectrum number o…
... having made a number of repairs) and ran a range of ... address and control lines (including /M1 and /RFSH) were stuck at ...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 ...repairsAnyone know how to fix a dodgy +2A built-in tape deck? Or does anyone know where I can get a spare?
Anyone know how to fix a dodgy +2A built-in tape deck? Or does anyone know where I can get a spare?Spectrum +2 faultHave recently purchased a +2 but it is not working. When you switch it on all I get is a screen with lots of different coloured boxes on it and it wo…
... me of a place that repairs spectrums as I am desperate ...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 ...Spectrum repairsHello, does anybody here have experience with repairing defunct Spectrums? I have several of them at home, mostly 48K ones collected over time from …
Hello,
does anybody here have experience with repairing defunct Spectrums? I have several of them at home, mostly 48K ones collected over time from folks I knew and from eBay, and was hoping to build at least one working machine from them ( ...ANN: Issue 9 of Sam Revival magazine out now (Sam Coupe)Issue nine of Sam Revival magazine is out now, and this issue features the first cover disk! The magazine starts off with the usual Quazar News, as…
... : Hardware, Software, Magazines, Spares and Repairs for the Sam Coupe
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.
help wanted regarding repairsHi, 2 questions. 1) Where can i get zx81 replacement keyboard membranes. 2) Is it possible to alter the volume/pitch of the tape recorder built …
Hi,
2 questions.
1) Where can i get zx81 replacement keyboard membranes.
2) Is it possible to alter the volume/pitch of the tape recorder built into a spectrum +2. Mine works but fails 99% of time as volume seems ...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 ...
