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Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?
... whether the IORQ line is wired, or the M1 line is wired or ... -
Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?
... whether the IORQ line is wired, or the M1 line is wired or ... -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
I think the DivIDE page-in works on an instruction fetch for all entry points including reset, so if you have a bad M1 line it'll never page in, not even on boot (I think that's what it did when I plugged it into a Spectrum with a known bad M1 line). -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
... is 0, ROMACC=1, M1=0 and MREQ=0, ... guess it's an M1 problem as Winston suggested.< ... What happens if I hold M1 low I wonder?
... Update:
I disconnected the M1 line from the edge connector and ... on that.
Proves the M1 problem though. Hurrah!
... -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
... root cause of the bad M1 lines are - now seen with ... ? Both the machines with bad M1 lines that I've encountered ... the hell does a faulty /M1 line do? I guess choices are ... -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
... a machine with a faulty M1 line, the address decoder either ... in this case only with M1 = high, IORQ = low, WR ... a machine with a dodgy M1 line fails to cause page- ... are expecting some address and M1 low, and fails to ... scope probe to the M1 line on a faulty one ... -
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 …
... a machine with a bad M1 line, I keep meaning to put ... what the nature of faulty M1 lines are, to perhaps discover ... -
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 …
... out that had a bad M1 line. I installed one of those ... -
DivIDE HelpHi all, After a rather long wait my DivIDE from Papaya labs arrived. I connected it to my spectrum, turned it on and...nothing. The green power LED…
Have you tried another Spectrum?
I don't know which Spectrum issues contained a faulty M1 line. Issue 4 may have been one of them.
I assume you have tried with no IDE periphials attached. -
DivIDE HelpHi all, After a rather long wait my DivIDE from Papaya labs arrived. I connected it to my spectrum, turned it on and...nothing. The green power LED…
... scratched) has a broken Z80 M1 line :-( so the divIDE (or any ... -
DivIDE HelpHi all, After a rather long wait my DivIDE from Papaya labs arrived. I connected it to my spectrum, turned it on and...nothing. The green power LED…
... issue 6 has a bad M1 line.
Ok, now I ... -
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…
... are in fact a faulty M1 line. I wish my case was ... /> In my case a faulty M1 line is out of the question ... -
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…
... (which has a known bad M1 line, and doesn't function with ... trailing edge of MREQ or M1 or IORQ since the bus ... -
Spectrum Analog interfaceHello Spectrum addicts, Feels good to join you :) I'm trying to build an analog joystick interface for our beloved machine. I've set up a page here:…
... to pay attention to the M1 line (so you don't erroneously ... since many Spectrums have dodgy M1 lines, and in my experience ... -
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…
... ?
If a dodgy M1 line is found, are the different ... -
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…
... money, including z80s with faulty m1 lines.[/QUOTE]
This ... it makes sense. But faulty line on CPU ? It is very ... chips with specific error - bad M1 line...
I read earlier that ... Z80 chips were with dead M1, and it was proven in ... -
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…
... a way to test the M1 line with only a multimeter?
M1 - i've got spare (new ... -
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…
... a way to test the M1 line with only a multimeter? ... case, it suggests that the M1 line is indeed knackered.
... that don't use the M1 line (ZXATASP & ZXMMC+) ... under ResiDOS even if M1 is broken is that ... etc use. Probably the M1 line is used only for the ... -
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…
... working under ResiDOS even if M1 is broken is that this ... /demfir etc use. Probably the M1 line is used only for the ... BASIC extensions, without using the M1 line? (Short of the hardware simply ... ignoring M1 for the case of RST ... -
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…
... a way to test the M1 line with only a multimeter? < ... much is "high" logic on M1 (this seems to vary, ... enter the reset state and M1 will go high, reading some ... 0,7V means a dead M1 pin.
Release ... s continously, and this causes M1 to show a 50% duty ... -
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…
... BASIC extensions, without using the M1 line? (Short of the hardware simply ... ignoring M1 for the case of RST ... -
RZX Player interface - Possible?If I have a Mass Storage interface and some media (CF, SD) with a couple RZX files, what would I need to play them on a real Spectrum? If the RZX fil…
... fetches and tweaks the /INT line at the time specified in ... ]
Tweaking the INT line is the only bit that ... to count (assuming a working M1 line) and fetching some data from ... -
Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …
I would re-check M1 line. You said that an Interface ... in the path of the M1 signal from the bus connector ... -
Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …
The M1 may be defective on the ... seem to have a working M1 with the Opus, it won ... new CPU cure my faulty M1 line ? -
Problem with Discovery OpusI've just got a Discovery Opus, but it seems to be faulty. When I connect the Speccy and switch it on, it displays the "C 1982 Sinclair Research", …
... , you have a faulty M1 line on your CPU. Replace ... one, with a working M1 line, the computer hangs while ... new CPU cure my faulty M1 line ?[/QUOTE]
It ... M1 pin is not stuck to ground or shorted to +5V line ... remember now if that line has a pullup resistor. ... -
Dead DivIDE?I just switched on my 48K for the first time in ages (which still works fine thankfully) but when I tried it with my DivIDE+, it repeatedly crashed. …
... a Z80 without a defective M1 line.
Unfortunately this is ... -
plus3e simple ide interface problemhi, I prepared a 8bit simple ide interface 3 days ago, but I got problems (with or without ide cable connected). 1.First of all, I have to press re…
... different z80 chip with defective M1 line. I'll try to make ... the symptoms of a broken m1? -
DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... (ZX can be destoryed). Also M1 line are ignored => if register ... -
Timex 2048 can't see divIDEToday my divIDE with CF adapter arrived. I connected it to my Timex 2048, switched the computer on and nothing happened. I mean "(C) 1982 Sinclair Re…
If you still can't get it to work, it may be that the M1 line of your Z80 is faulty. At least, this was the case with my (original) divIDE. I've not got round to changing the Z80 yet, but have another machine that works fine.
