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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…
... the symptoms of a broken m1?[/QUOTE]
... from normal I/O) also M1 goes high (say 5V). ... ), then the
M1 signal shows no activity.
experiment without using M1 in the address decoding.
- Test your intf on another machine -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
... ]
Possibly the faulty M1 problem that a lot of ... from. Any peripheral that needs M1 (basically, anything that has execution ... ) won't work properly if M1 isn't working properly.
test pull" as it heats just ... -
Recently acquired divIDE 57cI recently got hold of a divIDE 57c (whilst waiting RWAPs divIDE plus to materialise...) I have installed the interface and powered up my zx spectr…
... />
If you have dead M1 line then DivIDE can't ... with FATWARE OS. You can test from BASIC if FATWARE system ... -
Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…
... the edge connector? Does the M1 line on the CPU toggle ... ? If M1's not toggling, the CPU ... ? What about short circuits? I test all of the pins for ... probe in pin 1, then test all the other pins with ... -
Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…
... do things is first actually test the CPU works (put it ... soldered in, check MREQ and M1 is toggling). Then check for ... -
Broken speccys on ebayI often see broken speccys on ebay,the usual listings of no display on pic etc,i know could be opening a can of worms when buying one,so can [B]some[…
... or special mem test
- Z80 faults - NMI, M1 - external interface/logic ... -
Two Odd Spectrum 128K FaultsI also have 2 Spectrum+128 machines with heatsinks. 1. Did not power up properly - I replaced the 7805 regulator and cleaned the edge connector and …
... is the lack of the M1 line on the Z80 or ... I tend to use to test the machines, and after choosing ... -
Problem with new DivIDE+ on ZX +2A?I just received DivIDE+ from RWAPSoftware and am having trouble getting it to work on my +2/A. The device came with 1GBCF card preinstalled with 3 ga…
Is there a way to tell if I have one of the bad z80 without the M1 line, does the CPU look differently, has special marking, serial number, etc.?
Is there any software test to test for it?
Thank you. -
Problem with new DivIDE+ on ZX +2A?I just received DivIDE+ from RWAPSoftware and am having trouble getting it to work on my +2/A. The device came with 1GBCF card preinstalled with 3 ga…
... the bad z80 without the M1 line, does the CPU look ... />
Is there any software test to test for it?
Thank you.[/QUOTE]
Test: if a Multiface works, it ... tell from look if the M1 Line is faulty or not ... -
Problem with new DivIDE+ on ZX +2A?I just received DivIDE+ from RWAPSoftware and am having trouble getting it to work on my +2/A. The device came with 1GBCF card preinstalled with 3 ga…
It would be nice to have in DivIDE some kind of CPU test for M1 line, since this is main reason why diviIDE fails.
In general DivIDE should have possibility to boot with test ROM (the best - content loaded from card) without auto-mapper. -
DivIDE with gray +2 LOAD not workingI have 128+2 gray. It has faulty upper memory. PEEK 23733 shows 191. I wanted to use divIDE to load some test programs, but it always hangs when exec…
Is there any way to test for a faulty M1 line through software alone?
I've got a few spectrum's (mostly 48K) and some work with IF/1 and divIDE but others don't and not always the same combo. -
Help and Advice with DivIDE PlusHi Guys, Really struggling to get any reliable actiivty with my DivIDE Plus and am looking for some pointers. I am trying to get it to work with on…
... did you try testing your M1 line as described in this ... +. I thought it might be M1 line, but after testing it ... above it turns out the M1 line is OK. My erratic ... if you could do the M1 test procedure and report results.
Help and Advice with DivIDE PlusHi Guys, Really struggling to get any reliable actiivty with my DivIDE Plus and am looking for some pointers. I am trying to get it to work with on…
... if you could do the M1 test procedure and report results.[/QUOTE ... only spectrum with a faulty M1 line.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 ... to be OK.
To test Interfaces 1 I usualy just ...Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... bet is its a bad M1 line on both our machines ... desoldering that Z80 out to test it! ill stick to using ...Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... bet is its a bad M1 line on both our machines ... desoldering that Z80 out to test it! ill stick to using ...Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... a Z80 with a bad M1 line it's just a ... an easy way to test if the M1 is dodgy? Also, if ...Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... an easy way to test if the M1 is dodgy? Also, if ... no way of testing the M1 line easily that I know ...Spectrum +3 doesn't workMy recently ebay purchased +3 arrived today, so I was quite excited to have one again. I plugged it in and all was well, except for a slightly worry…
... an easy way to test if the M1 is dodgy? Also, if ...Spectranet updateOK, so I've not written an update here for a while...so here's a quick summary, the gory details are on the Spectranet news page on my wiki. * Hardw…
... the M1 line in a Speccy? Is this something I can test ... correctly doesn't use the M1 line so wouldn't prove ...Port 254 emulation problem. Help, please ...Sorry, but my english is not pepfect. I have a problem and need in professional help. I have developed hard-soft emulator of ZX Spectrum 48. The link…
... ) instruction:
CPI XH,0X40 ; test if the byte reads from ...Guide price for a 48k rubberkeys from you lot?My trusty Spectrum (an Issue 3, working since late 1983 or early 1984) has finally upped and carked on me :-( Now I could hit ebay or the local boot…
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not many can test the M1 line I guess (multiface etc ...A misbehaving DivIDE 57c (Now repaired)Hello there my fellow WoS'ers Indeed it has been a while since my last post, please let me wish you all a (belated) Happy New Year, my this year bri…
... sounds for me like the M1 line of the Z80 in ... the socket and redo the test. Or if you have a ... any other device with NMI, test if they work with the ...A misbehaving DivIDE 57c (Now repaired)Hello there my fellow WoS'ers Indeed it has been a while since my last post, please let me wish you all a (belated) Happy New Year, my this year bri…
... same problem.
[B]Test Equipment[/B]
[indent]
M1 and NMI signals -
test equipment
[/indent]
[indent]
[B][I]Continuity test the NMI [/I][/B]
Divide 57d3 and the TC2068.Hello, any tips getting the Divide 57d3 to work with a Timex TC2068? I either get a black screen with occasional change to the normal, or the revers…
... the possibility of a bad M1 line, or bad contacts on ... be the best way to test this? I remember there was ... a diagnostic board that would test the M1 line, but it would ...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…
... (ironically, while testing the M1! The oscilloscope probe briefly shorted ... continued to work minus the M1, and the attached Spectranet' ... the faulty M1 lines caused by some faulty test equipment in ... the factory that shorted 12V to M1 ...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…
... his faulty test rig idea.
If the M1 functionality wasn ... 't tested but something was plugged in (a test ... cart perhaps?) one of their test carts could have had a ... short wiping out the M1 line on every machine that ...Spectrum 128 toaster and divide incompatibility problems with some demos and games.Okay so I got this thing now. It?s my first Spectrum ever. [img]http://img836.imageshack.us/img836/2016/speccyl.jpg[/img] [url]http://img824.image…
... did the usual trap on M1+address method. (This turned out ... makes a good worst possible test case! The trouble is it ...Spectrum 128 toaster and divide incompatibility problems with some demos and games.Okay so I got this thing now. It?s my first Spectrum ever. [img]http://img836.imageshack.us/img836/2016/speccyl.jpg[/img] [url]http://img824.image…
... did the usual trap on M1+address method. (This turned out ... makes a good worst possible test case! The trouble is it ...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…
... situation. I created the memory test program that I recently posted ... address and control lines (including /M1 and /RFSH) were stuck at ...
