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128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…
... kindly sold me a 128K ula since the one in my ... . But even with the new ULA, I still can not load ... -
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…
... board, and an Issue 7 ULA.
Spectrum number two ... 3 with an Issue 6 ULA. It is number two I ... service manual suggests replacing the ULA, but that hasn't made ... that R62 has got extremely hot at some time in the ... -
ZX +2 Grey with quiet ULA soundHi all. I come here for advice before messing up with the main boards and end up killing them for good. I got this grey ZX +2 with a very low ULA a…
... with a very low ULA audio. The ULA sound is low to ... is fine.
The ULA was checked OK with another ... -
THE ULA CHIPDoes anyone know which the ULA chip is in Spectrum +2 ?
Does anyone know which the ULA chip is in Spectrum +2 ? -
Lot's of ZX Spectrum parts: RAM chips, ULA's, etcI have new stock of 100% tested parts. I even got my hands on a bunch of ULA's!! [IMG]http://benophetinternet.nl/hobby/sales/parts/IMG_6068.JPG[/IMG…
... hands on a bunch of ULA's!!
[IMG]http ... [/B]
- 48K / 128K ULA
- Zilog Z80 3.5 ... -
WANTED: ULA chip for Issue two SpectrumHello, I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip the…
Hello,
I fired up my Issue Two ZX Spectrum a couple of weeks ago, and it seems my ULA chip is failing again. Has anyone got a spare working chip they'd be willing to sell? Please PM me if you can help.
Regards,
Kamil -
ZX Spectrum ULA + Glue Logic in VHDL for EPM78128SLC84Hi. I'm wanting the VHDL code for the Spectrum ULA and Glue logic to pop onto a Alter MAX EPM7128SLC84 (CPLD) IC. I'm wanting it to perform : Memo…
... VHDL code for the Spectrum ULA and Glue logic to pop ... -
ZX Spectrum ULA + Glue Logic in VHDL for EPM78128SLC84Hi. I'm wanting the VHDL code for the Spectrum ULA and Glue logic to pop onto a Alter MAX EPM7128SLC84 (CPLD) IC. I'm wanting it to perform : Memo…
... VHDL code for the Spectrum ULA and Glue logic to pop ... -
128k toastrack with an amstrad ULAI received a 128k toast rack today with an "amstrad" ULA fitted, I'm wondering if this is fairly common or more rare, presumably manufactured after t…
... rack today with an "amstrad" ULA fitted, I'm wondering if ... -
ULA Plus demonstration!I have seen with my own eyes the ULA+ in action - the actual real hardware. Fortunately, so did the camera in my phone. Here's a short (shaky) video …
... with my own eyes the ULA+ in action - the actual real ... short (shaky) video of the ULA+ being demonstrated by mcleod_ideafix at ... -
Needing a Timex 1000 ULAHello all! A friend of mine needs a Timex 1000 ULA. Anyone willing to sell one or who could point me at a place where he could buy some at a fair co…
Hello all!
A friend of mine needs a Timex 1000 ULA. Anyone willing to sell one or who could point me at a place where he could buy some at a fair cost? -
Yet another glitchy graphics 48kHeyo, I'm new both to the forums (sorry if this is the wrong forum) and to Spectra I'm afraid, picked up a 48k from a steam fair sale thingy (not th…
... seem to be getting hot except the ULA and to a slight ... to try replacing the (socketed) ULA, is this correct (given the ... -
Which ULA?Just a quick question, more of interest rather than immediate need... I am thinking ahead about the repair of an Issue 2 board, and also an Issue 6A …
... of which 'may' need replacement ULA chips.
After a ... sure whether any ZX Spectrum ULA can be used, or whether ... each issue has specific ULA chip requirements. I'd be ... before heading down the new ULA route.
Cheers,
Interface 1 ULA - what does it do and what not?I heard a rumour a few weeks ago: that the Interface 1 ULA does not control the Microdrive, but mainly the ROM and network. Many of us (like myself)…
... that the Interface 1 ULA does not control the Microdrive ... almost always we suspect the ULA.
So the ... is completely tied to the ULA.
No question ... it certain that the ULA causes the most problems?< ... ensure it is indeed the ULA that fails mostly?
The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…
... the board, originals were socketed). ULA and CPU had also been ... now, plus it's too hot to solder extensively!)
Toastrack trouble[IMG]http://i44.tinypic.com/11lq7id.jpg[/IMG] Sorry about the picture size, cant figure out how to make it smaller! Anyway, the pic says it all, th…
... does work as intended). ULA gets extremely hot after about 20 seconds ...eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... composite SYNC! The poor ULA is driving the RGB switching ... much for the ULA, and it gets too hot, eventually overheating ... You can tell if the ULA is over-stressed by measuring ... 23 (CSYNC) on the ULA. It should be about 3 ... is my Spectrum 128K's ULA, and that's too ...ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... 0x40-0x7F then the ULA gets confused by the ... memory address generated by the ULA (who wants to read ... two addresses. Therefore the ULA reads the data from an ... is actually read by the ULA is the following:
ULA is busy drawing the border ...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 ...Search for "Hot Hit" - A hot airballon gameI barely can recall that I once saw on the ZX-Spectrum a hot air balloon simulator, and only remember that I couldn't understand what is happening be…
... on the ZX-Spectrum a hot air balloon simulator, and only ... recall such a game called "Hot Hit"
Searching around ... be incorrect)
Title: Hot Hit
Release date: 1984 ... : InterBit
This was a hot air balloon simulator for the ...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 ...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 ...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 ...
