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Microdrive Serial ProtocolGentlemen, I've been dreaming for a long time to develop a Microdrive emulator, where an SD card loaded with .MDR cartridge images can be accessed t…
... is sent/received from/to ULA in 16 Z80 T-states ... elapse. I suppose that IF1 ULA has a way to synchronize ... -
Spectrum FPGA clone with HDMI video output by Jozsef LaszloThis clone is based upon the ULA core I wrote for opencores.org . It features a scandoubler and HDMI conversion engine. Jozsef has found that a 28MHz…
... clone is based upon the ULA core I wrote for opencores ... -
Issue 2 black paper white borderGot an issue 2 here that has a 6c001e ULA, no cockroach, no transistor mod (although you can clearly see on the top of the z80 and on some legs, some…
... here that has a 6c001e ULA, no cockroach, no transistor mod ... -
Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…
... mode (Scotty, Arm73).
- Fixed ULA Plus mode being disabled in ... -
Roger Jowett?Had this email to my ebay account, bearing in mind I had already replied that I only had 2 microdrive connectors left and I dont have any of the othe…
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 ...20-column multicolour: a half-baked ideaI was writing an email reply to one Mr Jowett about multicolour routines, and in that way that explaining something to someone else makes you think "…
... just before the ULA reaches them. While the ULA is busy ... row down. While the ULA is rendering that first pixel ... byte as soon as the ULA has passed it, and ... and finish just before the ULA catches up with us at ... fifth line, where the ULA caught up and redrew the ...ULAs interchangeable across issuesHi all, Now that I'm retired, I'm looking again at 8 bit computing :) I'm attempting to revive a spectrum 48K. I'm going to swap chips in/out from…
... issue ?
Should a ULA from an issue 6A work ... />
If retrofitting a newer ULA, do you have to undo ...August sales[COLOR="Blue"]I have about everything listed here in stock. But some of it must be made ready (with custom wishes). [B]Buying directly will save you…
... ://benophetinternet.nl/hobby/vanmezelf/sales/ula.jpg[/IMG]
[B]48K ... ULA (different types for issue 2 ...Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…
... requires a read from the ULA port (0xFE) with the high ...Issue 4A black paper, white borderJust had one of these through, nice yellow pcb! Everything but the ULA soldered in. On power up I get black paper, white border and some intermitten…
... yellow pcb! Everything but the ULA soldered in.
On power ...Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... . Could it be a defect ULA, or one of the RAM ...spectrum 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 …
... />
I was thinking bad ULA but not sure - if so ...Spectrum 48k video and keyboard issueHi all, few days ago I experimented with battery supply for my speccy (48k issue 2), and I was measuring the voltage and how much current it used. A…
... hope it's not the ULA because replacements are hard to ...ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…
... />
[U]ZX Spectrum ULA differences[/U]
As you ... +2 use the same ULA, but this ULA is very different from ... the 48K ULA.
Allthough the toastrack ... connector comes directly from the ULA.
The Z80 gets the ...Ben Versteeg's September sales[COLOR="Blue"][B][SIZE="6"]Add-ons[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophetinter…
... [/IMG]
[B]48K ULA (different types for issue 2 ...Another broken SpeccyHi all I have been given another ZX Spectrum, this time it has a really odd problem as you can see in the video: [URL="http://youtu.be/ZOSiBEYQD7w"…
... , works fine
Checked the ULA on another Spectrum - all good ...PowerSlave's Sinclair/Timex collectionNow that I cataloged all the items I have, it's time to show them :) Between bought and offered, my collection items are: - Sinclair Spectrum 128k…
... />
- Sinclair Spectrum 48K (Issue 3B) P 068161
Working 50 ... />
- Sinclair Spectrum 48K (Issue 3B) P 073165
Not working ...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…
... (that does work as intended). ULA gets extremely hot after about ...+3 in my handsAfter so many attempts, I managed to buy a +3 in good working order and almost mint condition. I have yet to check floppy drive, but I hope that he i…
... have, early +3 or later +3B?
Here are few pics ...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 …
... the composite SYNC! The poor ULA is driving the RGB switching ... is too much for the ULA, and it gets too hot ... /> You can tell if the ULA is over-stressed by measuring ... pin 23 (CSYNC) on the ULA. It should be about 3 ... is my Spectrum 128K's ULA, and that's too high ...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 ... other 4116's and a ULA... :-o
Looking back ... :x plus the 5C112E-2 ULA's only good for issue ...Simulate errorshi, i would like to know if its possible to simulate errors on an emulator? Like bad memory or bad ULA. Salut
hi,
i would like to know if its possible to simulate errors on an emulator?
Like bad memory or bad ULA.
SalutAnother way to add audio input on a +2 - No more low level sound problem !Hi all, Last week, with 3 friends, we participated to a modelism / games / hobbies meeting, and we made a retro computing stand... (big succes, I'll…
... ) that proceeding that way, the ULA is protected.
The Speccy ...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…
... a later version of the ULA.
See [url]http ... /%2ARARE%2A-ZX-Interface-1-ULA-Chips---LA15-312-3481[/url ...Ben Versteeg's November sales[COLOR="Blue"][B][SIZE="6"]Almost ready[/SIZE][/B][/COLOR] [IMG]http://benophetinternet.nl/hobby/vanmezelf/sales/line.jpg[/IMG] [IMG]http://benophet…
... [/IMG]
[B]48K ULA (different types for issue 2 ...Spectrum +3e acting up...Hello, Well, my Spectrum +3e is starting to act up. All 48k games load fine but now no 128k games will load :/ In one 128k game, in the beginning r…
... there a memory test or ULA test, etc... for the +3 ...a few questions1. When will emulators use pc vga capabilities to emulate the uhf tv output accurately including phosphoric delay and crosstalk synchronization 2. W…
... hardware interlace like the spectra ula+ or zx prism
Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…
... .
Hmmmm... swapped the ULA, but it also worked perfectly ... puzzled. Apart from ROM and ULA, there's nothing else on ...
