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ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... since Issue 3 board.[/QUOTE]
Interestingly the Issue 4b board has ... R57 was maintained through until issue 4, even if never ... /> See 1.3 Modifications - Issue 1 Board, sections (b) and (c ... recorded by James were on issue 3 machines, I quote ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
Unbelievable.
That's counting on luck. Aghhh. What a people.
Very well, it's similar to the address part switching problem. Look what they changed in issue 4 of the board. I think it's because they have lost their luck. -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
Issue 1 80K SpectrumHere's the other Spectrum I acquired last weekend. It's an [URL="http://www.drumfu.com/Issue1.jpg"]Issue 1[/URL] with an [URL="http://www.worldofspec…
... pointed out, sibce the issue 1 board is so much simpler than ... the issue 2+, there's far ...Faulty +2 Grey :(Hello everyone... i was trying to fix a +2 grey board the other day, i had it for some time now. It gave a black screen (paper and border) with two …
... one used on 48k spectrums issue 5 and later.... it is ... picture of a +2 grey board here
[url]http://www ...Faulty +2 Grey :(Hello everyone... i was trying to fix a +2 grey board the other day, i had it for some time now. It gave a black screen (paper and border) with two …
... one used on 48k spectrums issue 5 and later.... it is ... picture of a +2 grey board here
[url]http://www ... it. It's used in issue 6 48K machines, 128K+ and ...+2A, are they all this incompatible?My +2A does not seem to be faulty but the number of games that don't run on it are silly. Scooby Doo(Elite), Crazy Cars , Turbo Outrun, Vindicator(im…
Nope, no later board version cured the problems.
... Fairlight 2 - 128k). The incompatibility issue with the later amstrad machine ...The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…
... some reworking of the prototype board, adding some more decoupling, but ... doing, but I remember the issue). So I had to use ...Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... revision 3 board. I was thinking there might be an issue with ...Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…
... the issue for splATTR by designing huge sprites on a checked-board ...Spectrum Dead On Arrival StatsDr. Rupe, who worked at Sinclair Research at the time, sees parallels with Microsoft and the XBox saga [url]http://community.zdnet.co.uk/blog/0,1000…
... was in 1984, when the Issue 4S board was being made - by ...Spectrum Dead On Arrival StatsDr. Rupe, who worked at Sinclair Research at the time, sees parallels with Microsoft and the XBox saga [url]http://community.zdnet.co.uk/blog/0,1000…
... was in 1984, when the Issue 4S board was being made - by ...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…
... /> At least on my issue 6a board the RFSH line of the ...Original Kempston interface on a +3Hello everyone, if i insert an original kempston interface in the extension port of a +3 should it work or not? I tried it and the machine didn't bo…
... connector and the kempston interface board.
It works fine ...
My +3's board has "issue two" written on it, does ...Original Kempston interface on a +3Hello everyone, if i insert an original kempston interface in the extension port of a +3 should it work or not? I tried it and the machine didn't bo…
... it has the spectrum +3 board without disk components.
board.
Then It'll ... /> >My +3's board has "issue two" written on it, does ... spectrum +2A with +3 board is a issue 2 and I had ...SpecDrum2 updatedHello again, just to let you know that the specdrum2 program has now been updated and is in the remakes section and now does not have the enter code…
... it was causing a timing issue but even on my laptop ... is 2200xp 256meg ddr on board nvidia graphics and slow as ...New Collector Advice NeededI have just started by quest to collect Sinclair computers. Is there a way to tell anything useful from the spectrum serial number? Does it indicate …
New Collector Advice NeededI have just started by quest to collect Sinclair computers. Is there a way to tell anything useful from the spectrum serial number? Does it indicate …
... or 48k machine or which issue board it has inside?
issue 1 and 2 boards were ...New Collector Advice NeededI have just started by quest to collect Sinclair computers. Is there a way to tell anything useful from the spectrum serial number? Does it indicate …
... if I can tell what issue number a machine is from ... a so called Issue 1 really is an issue 1 from the ... for telling the issue number of the circuit board from the serial ...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…
... worked was previously on an Issue 2 speccy with a ZTX313 ... the Z80 on the 128K board particularly because as i said ... i haven;t seen in board pictures on the net. Maybe ...a bully now that I'm 27...last year, with this new thing of the Bologna process, I came back to college to get my master degree. Unfortunatelly, the new rules also made me r…
... like that too, on the board and sat down.
board must have an issue with their own bellend ...Wanted Issue 1 32K DaughterboardBit of a long shot i know but original or if anyone can make one i got cash waiting. [IMG]http://img.photobucket.com/albums/v322/Sloposse/Sinclair/s…
OK issue 1 gone on sale tonight ... got a schematic for the board ?
EDIT: [url ...Issue 1 ZX Spectrum for SaleBefore I go down the route of shoving this on ebay, I would like to offer fellow WoSsers the opportunity to express their interest in this item. It …
Pictures of the my Issue 1 Spectrum now appear at:< ... chip rather than a circuit board).Issue 1 ZX Spectrum for SaleBefore I go down the route of shoving this on ebay, I would like to offer fellow WoSsers the opportunity to express their interest in this item. It …
... issue 1 - wonder if Downsway did the upgrade - certainly this memory board ... to replace the small circuit board that was also used ... I wonder exactly how many issue 1 computers were issued - ... />
Even odder, this issue 1 motherboard and daughterboard had ...Wanted Issue 1 32K DaughterboardBit of a long shot i know but original or if anyone can make one i got cash waiting. [IMG]http://img.photobucket.com/albums/v322/Sloposse/Sinclair/s…
... I managed to acquire an Issue 1 with an [URL="http ... SP80 daughterboard[/URL], plus an Issue 2 with an [URL="http ... routines (from his hardware diagnostic board) could be adapted to check ... of expansions.
My Issue 1 appears to be pretty ...Wanted Issue 1 32K DaughterboardBit of a long shot i know but original or if anyone can make one i got cash waiting. [IMG]http://img.photobucket.com/albums/v322/Sloposse/Sinclair/s…
... I managed to acquire an Issue 1 with an [URL="http ... SP80 daughterboard[/URL], plus an Issue 2 with an [URL="http ... routines (from his hardware diagnostic board) could be adapted to check ... of expansions.
My Issue 1 appears to be pretty ...Spectrum 48K colour problemI obtained Spectrum 48K issue 2 in verry good condition. Machine work very good, but picture on my Samsung TV (72cm diagonal flat 100 Hz) is little s…
... round metallic trimmers on an issue 2 spectrum (2.2k each ... is known to happen on issue 2 spectrums. On latter speccy ... . If some components on the board shift (drift) on their valus ...True Spectrum laptop (no emulation)[url]http://user.tninet.se/~vjz762w/[/url] Hi All, I have build a speccy laptop, battery part is not ready yet.... I did it on 2 days, I will put s…
... the power socket of a issue 4A speccu, with my ULA ... .3v reg of the CPLD board is driven from the 9v ...Socket to me..Specchums ! I'm laying out the PCB for the ULA replacement, and I need to know how common it is for the following IC's to be socketed (all to the ri…
I have an issue 2 motherboard, which has been ... .
however, looking at the board, the IC25 socket doesn't ... yellowing flux stains on the board that the other soldered on ... /> my other 48k is an issue 6a which does not have ... sticks up 5mm from the boardSoldering Iron Fun - 48k Composite Video ModYay, I bought a temperature controlled soldering iron and associated gubbins yesterday and have had a practise go at Womble's documented [URL="http:/…
... the photos are of my Issue 3 board that has a different ...
