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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? -
ZXMAK2 Version 2.7.3.3Hi all, new version of ZXMAK2 emulator is available here: [url]https://zxmak2.codeplex.com/releases/view/106228[/url] Whats new: - a lot of bugs wa…
... BYTE memory module (with specific ROM mapping) and BYTE ULA device
ULA things still not emulated yet ... most precise emulator for PENTAGON ULA :)
- and other
Modern replacement PSU for +3This has probably been beaten to death in earlier threads.. but are there modern sized replacement PSUs for +3 available? My quick search did not res…
... .. but are there modern sized replacement PSUs for +3 available? My ...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?
any used this module on your spectrumsseen this and wanted to know has anyone here used this module for the spectrum [url]http://www.ebay.co.uk/itm/231012299003?ssPageName=STRK:MESINDXX:…
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…
... replacement 4116's were soldered to the board, originals were socketed). ULA ...TR1 and TR2 replacementCan anyone tell me the correct replacement part for these? This is for an Issue 4S btw
Can anyone tell me the correct replacement part for these? This is for an Issue 4S btwspectrum issue 6a oddityMorning everyone Bought a speccy (rubber key) from ebay in near mint condition - couldn't tune in on analogue particularly well so did the comp mod …
... bad ULA but not sure - if so where to get a replacement ...Spectrum +2 power supply replacementI bought my first Spectrum the other day, a grey +2, but it seems that the power supply is busted (I've tested it with a multimeter and tried replaci…
... I'd rather get a replacement power supply.
From ... else has tried finding a replacement +2 PSU and knows another ...First time capacitor replacementHi, I have an Issue 2 board, that i wish to start with recapping as advised on here, as they look to be all original. (Same with V3 board, but going…
... of the size as a replacement.
- 22uf 16V (C25, C28 ...I've had better nights...So I got a broken issue 2 today, case in good nick but the diags board showing multiple failures in both lower/upper RAM. Never mind, good as a spare…
... random fill test. Replacing the ULA gets rid of the patterning ... two more 4116's needed replacement.
TL;DR: Dodgy ... other 4116's and a ULA... :-o
Looking back ... :x plus the 5C112E-2 ULA's only good for issue ...ZX Interface 1 ULAs FOUND !!Thanks to Ian Gledhill (of Mutant Caterpillar) we have now acquired a stock of replacement ZX Interface 1 ULAs. These are new old stock and have a d…
... now acquired a stock of replacement ZX Interface 1 ULAs.
ULA.
See [url]http ... /%2ARARE%2A-ZX-Interface-1-ULA-Chips---LA15-312-3481[/url ...Power consumption improvementsHi all, Having just received lower and upper RAM replacement modules from Zorn, I thought I'd perform some current draw measurements to see how much…
... received lower and upper RAM replacement modules from Zorn, I thought ... :
Recom + Lower RAM module: 260mA
Recom + Both RAM ...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 ...Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... Keyboard membrane, or IC1 (the ULA chip).
... signs of a faulty ULA chip are. Are there ... but have not seen any replacement ULA chips. In the event ... cannot remember exactly what ULA is on the board ... for a certain model ULA.) Tomorrow I will check ...RTC module for DIVIDE[IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_top.jpg[/IMG] [IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_bottom.jpg[/IMG] [IMG…
... (not tested)
RTC module is small divide upgrade with ... ESXDOS support it.
Module is designed specially for original ... , then is impossible make this module aslo for DIVMMC)
... interface
2) insert RTC module to sockets
3) ...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 ...Replacement Faceplates for ZX Microdrive UnitsHow many people would purchase replacement faceplates for the ZX Microdrive units at a cost of ?14 each? I was just wondering whether the market wou…
How many people would purchase replacement faceplates for the ZX Microdrive units at a cost of ?14 each?
I was just wondering whether the market would be big enough for 100 of these? Any less and the price would be prohibitive.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 ...Interface 1 ROM replacementHi All! I wrote down my story because I think that somebody might have similar problem and can find some ideas here how to overcome it... :) Recent…
... found any available drop in replacement of the 24 pin 8K ...Microdrive-Microdrive incompatibility?Hi All! Finally I could get enough Microdrives and connecting blocks (or cable replacement) to make the largest storage configuration of the classic…
... and connecting blocks (or cable replacement) to make the largest storage ... the microdrives to check the ULA version/manufacturing date or the ... ISS4 board with LA15-302 ULA and edition 2 ROM. (the ...New Spectrum User - Inveterate UpgraderI've been asking a few questions about my Speccy, which is the first I've owned despite my advancingh years. I was a C64 kid, but please don't hold …
... . I've also got a ULA heatsink on the way, and ... either, so I have a replacement for that on-hand, although ...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?
