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48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
I've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working 48k pluses now. :)
Anyone else come across this? -
New test for finding missing +2A/+3 ULA timing detailsHello, having added the +2A/+3 emulation recently, I want to make sure I got the ULA timing 100% right. We know when the contention pattern starts, …
... make sure I got the ULA timing 100% right. We know ... reliable information about when the ULA actually fetches the screen bytes ... -
ULA pinsHi I am trying to figure out where on the ULA , among other things, the VYU pins are. I have been reading schematics , but I am really lost when I …
... figure out where on the ULA , among other things, the VYU ... good description of how the ULA reads from video ram from ... -
ULA 6C001EX-7Last night I visited a friend of mine and had a look at the ULAs in his Spectrums. He has a 5C102E 8220 in a 16K issue one, a 5C112E 8237 in a 16K is…
... issue one (definitely a replacement ULA, there was evidence of where ... />
He also had a ULA I had never seen before ... -
5C series NTSC ULA 5C114E 8248Not sure if this has been mentioned before; I haven't seen anything about it online. Chris Smith's book discusses 6C011E as the NTSC ULA sold in Spec…
... discusses 6C011E as the NTSC ULA sold in Spectrums in Chile ... Issue 3 style 6C series ULA.
Here we have ... much earlier 5C series NTSC ULA, in a Spectrum with a ... time the 5C112E-2 PAL ULA was being made.
Which ULA to fit in which issue SpectrumI spent a little while studying the resistor changes on page 30 of the ZX Spectrum 48K service manual. They all concern aspects of the video circuit …
... problems to have the correct ULA for that board.
ULA. 220R for 5C112E, 1K for ... 6C001E. The older ULA seems to be designed for ...Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... palette-switching and Timex-multicolour functions from the ULA+ specification[/B].
ULA+ upgrades, it would have ... probably be best if the ULA+ OUT commands that control ... without much support. And yet ULA+ seems to be something ...Wanted Spectrum ULAI'm looking for a working replacement ULA for my Issue 3B Spectrum. Revision 6C001E-6 or 6C001E-7. Thanks!
I'm looking for a working replacement ULA for my Issue 3B Spectrum. Revision 6C001E-6 or 6C001E-7.
Thanks!ULA 6C001E-7After doing an audit of my Spectrum PCBs, I find I have one too many 6000 series ULAs and one too few 5000 series ULAs. Would anyone like a 6C001E-7 …
... anyone like a 6C001E-7 ULA in exchange for a 5000 ... series ULA, either 5C112E, 5C112E-2 or ...Wanted: ULA 5C112E, 5C112E-2 or 5C112E-3After doing an audit of my Spectrum PCBs, I find I have one too many 6000 series ULAs and one too few 5000 series ULAs. Does anyone have a 5000 serie…
... anyone have a 5000 series ULA, either 5C112E, 5C112E-2 or ...Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... contended memory timings on the Timex Sinclair 2068, in particular ... />
It appears the Timex SCLD still applies memory contention ... this was because the Timex engineers felt that no-one ... read.
The Timex Sinclair 2068 cannot reliably access ...48k Spectrum ULA issue?Hi All, Have a couple of Spectrums Plus' with their orignal ULAs showing the failure as in screen 2 on the left. [URL="http://hardware.speccy.org/i…
... confirm this is probably the ULA? I get the same error ... in other Spectrums using the ULA's so I'm virtually ...Toastrack ULA QuestionDid any of the toastracks have the +128 grey ula with Amstrad printed on them?
Did any of the toastracks have the +128 grey ula with Amstrad printed on them?IF1 Ula Questionim thinking about getting an interface 1 but im aware that there is/was an issue with the ula.My question is if i have the opportunity to buy one but…
... /was an issue with the ula.My question is if i ... or a deformity above the ula does this mean i need ... they still functional but the ula gets hot?can someone explain ...Timex TC 2068 Grey working[B]Hi up for sale is a Working Timex TC 2068 grey. Some keys need some extra force but they work. [B][I][U][COLOR="Blue"]Timex 2068 with Spectrum em…
... for sale is a Working Timex TC 2068 grey. Some keys ... /> [B][I][U][COLOR="Blue"]Timex 2068 with Spectrum emulator cartridge ... /> [B][I][U][COLOR="Purple"]Timex 2068 without Spectrum emulator/PSU ...ULA type and datecode listHere is a list of all known ULA datecodes with type, collated from various threads and the serial numbers list. For the 6C series ULAs without a -5, …
... a list of all known ULA datecodes with type, collated from ... probably a replacement ULA.
[CODE]DATE ULA ISSUE(s)
ZX81 ULA questionRecently, I got a nice bundle of kit comprising of a ZX81, Memotech keyboard, PSU and brand new 16K Sinclair Memory pack. The ZX81 has a ULA with no…
... />
The ZX81 has a ULA with no ID other than ... /> Unfortunately all chips except the ULA are socketed.48k Spectrum ULA 6C001E-6 ChipAs title says, for sale: ULA 6C001E-6 Chip PM if interested.
As title says, for sale: ULA 6C001E-6 Chip
PM if interested.ULA queryDoes it matter which version ULA fits in a version of the spectrum motherboard, or are they are compatible with each other?
Does it matter which version ULA fits in a version of the spectrum motherboard, or are they are compatible with each other?JHCon 2014Hello, not sure if this is the right category but JHCon 2014 will take place[B] from 28. to 30.11.[/B] at usual place - gymnasium in Jindrichuv Hrad…
... "Cowina"
- BONUS COMPO: Timex 2048 1K Intro Compo
TIMEX 1K compo!)
--- your intro ... intro must run on standard Timex 2048 computer
--- the intro ... modes of TC2048/2068 PAL ULA
--- add a proper Basic ...What is the Speccy? exUSSR edition.In exUSSR 8 years ago have been solved all these issues, and developed a General opinion. All who do not agree with this opinion, are incompetent peo…
... not exist, because to replicate ULA too expensive.
6 ... those computers as the Timex Sinclair 2068, Timex Computer 2048/2068, SamCoupe ...Issue 3 ULA ProblemsI've been given an Issue 3 48k to fix. It was producing no video and no picture on the TV. The coil was buzzing so it was getting power and all the v…
... problem might be with the ULA.
Sure enough, ... it with a spare ULA from an Issue 4( ... I decided to swap the ULA again for one out of ... .
If the ULA is only partially working, and ... the wrong tree with the ULA because when dropping the ...Non-Ferranti ULA 6C001E-7?Hello! I don't like Iss2 boards that much but after revising one Speccy like that for a friend, the results were so positive that I decided to have …
... ever seen a 6C001E-7 ULA with no indication of "Ferranti ...Heatsink for ULAHi, My Speccy 48k issue 4s starts to get temperamental when it's been on for a while. Machine itself is fine but loading gradually becomes more unre…
... chum on Twitter suggested the ULA might be getting hot.
ULA might cure it? Question is ... put a heatsink on their ULA?
Cheers ...ZX81 ULA Swap questionHi Can someone remind me if all three versions of the ZX81 ULA are electrically compatible? I just bought a ZX81 with an older ULA, so it lacks the …
... three versions of the ZX81 ULA are electrically compatible? I just ... a ZX81 with an older ULA, so it lacks the backporch ... happen to have a good ULA 2C210E. Can I simply swap ...Fully refurbished ZX Spectrum 48K boards incl. ULA- Including ULA (version that [URL="http://www.bytedelight.com/?p=41"]corresponds to the board issue[/URL] - click to find out more about ULA version…
- Including ULA (version that [URL="http://www. ... to find out more about ULA versions)
- All new electrolytic ...NOS Timex-Sinclair 1000 bundle on EbayNot cheap, but not so easy to find these days. I put my NOS Timex-Sinclair 1000 bundle on Ebay - a bit sad, but I´m more a Spectrum guy and maybe thi…
... days. I put my NOS Timex-Sinclair 1000 bundle on Ebay ...Ferranti ULA ULA5C112E-3 ICBeen clearing out some computer bits and I have a ULA (part number ULA5C112E-3, taken from an Issue 2 48K if I remember correctly and working when it…
... bits and I have a ULA (part number ULA5C112E-3, taken ...
