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Repairing a torn trace on an Issue 2 PCBI've found what I think could be the reason for my Issue 2 board not working properly... There is a torn PCB trace beneath one end of where a new ULA…
... the socket for my ULA!
Not been very active on ... get on with this: if not, it is a new fuse ... -
SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... #C000. If UDG "U" is not detected then jump to address #000E ... . If UDG "U" is detected then jump to your play ... -
SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... #C000. If UDG "U" is not detected then jump to address #000E ... . If UDG "U" is detected then jump to your play ... handler though as I'm not familiar with the divIDE code ... -
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…
... fitting sockets would [U][B]not[/B][/U] be my next ... />
Is the ULA not socketed then :-o (not that it makes much ... -
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…
... carry (NC) if joypad is detected
JR RETURN
not detected then reset state of all ... joy port
SCF ;joypad not detected then return with carry (C ... -
Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... something amiss :)
I'm not sure what the tests are ... ROM checksum 7758 that was not detected as a 48K Spectrum.)
not flickering.
2) On ... -
Bug in the game "Bronx" which makes it resetI just found a nasty bug in this game from Animagic. If you hit the last enemy, from level 6, with the upper punch, the game starts getting a lot of …
Thanks for trying it out, Alessandro. Luckily the enemy can be beaten with just the normal punch, and its not that difficult. Funny the amount of games that after all these years had some sort of bug which were not detected at that time! -
7mhz CPU?One of the things I like about Spectaculator, is that I can zap the clock speed of the emulated CPU up. Doing so makes me wonder about why the desig…
... a BBC micro, but not in a ZX Spectrum...[/quote ... ]
Perhaps not, in a original little rubber ... some more, though... would the ULA itself necessarily have to run ... display? Could a different, hypothetical ULA not be left to do its ... -
Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…
... correctly? :)
Checking the ULA, not sure whether you meant the ... both:
[b]ULA chip to GND[/b]
[b]ULA chip to 5v[/b]
[b]ULA socket to GND[/b]
[b]ULA socket to 5v[/b]
CASTLE CAPERSThe Dream Fairies have been kidnapped by the evil mouse king and his horrible accolites Use your magic to make blocks or holes and go up and down t…
... /> JR Z,END ; joystick not detected (C=0)
INC C ...
JR Z,END ; detected original kempston joystick (C=1 ... = kempston joystick not detected
A=1 = detected original kempston joystick ... button
A=2 = detected new kempston joystick with one ...CASTLE CAPERSThe Dream Fairies have been kidnapped by the evil mouse king and his horrible accolites Use your magic to make blocks or holes and go up and down t…
... ,0
RET Z ; joystick not detected (A return value 0)
RET Z ; detected original kempston joystick (A ignore ... bits)
LD A,B ; detected new kempston joystick (A contain ...SD Card Interfaces for the ZX Spectrum : the complete list OK I admit it : this thread will start life as the incomplete list of SD card interfaces but the aim is to list the lot
... both return 255 then joystick not detected. If only on port 223 ... port then kempston decoder is not so good (use only A5 ...ZX Nuvo 128..Hi There, I have built the ZX Nuvo 128 by Superfo, but it has a problem. The machine is working, but the video signal is completely bonkers. I've …
... amount of DivMMC RAM available - not quite what I was looking ... both return 255 then joystick not detected. If only on port 223 ... port then kempston decoder is not so good (use only A5 ...Recreated ZX Spectrum Release date?!?Hi All, I ordered a Recreated ZX Spectrum from Amazon. The release date has since changed to 26th April (3rd time it changed). In the meantime, El…
... feelings are some pressings are not detected randomly, so it's really ... games and the sensations are not good (it's like if ...Trying to repair a Speccy 48k - No PulsingI've had this machine for ages. I'd I've been putting off fixing it for some time now. So a couple of days ago I pulled it apart and started prob…
... get pulsing on the ULA (the working ULA, not the broken one). The ...ZEsarUX 6.1 BETAHi I have uploaded a new ZEsarUX BETA version 6.1. You can download it from the usual beta url: https://sourceforge.net/projects/zesarux/files/…
... colours on the 16K/48K/+ ULA. I don’t have my ... for B in the Spectrum ULA in that Chris Smith found ... generate Y inside the ULA is 0.15 not 0.11 - but ... Y values generated by the ULA, not to the dematrixing performed by ...ZXBaremulator v3.H(ikoki) BetaHi, Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator. Now two keyboards can be connected to the PI…
... /> # uncomment if hdmi display is not detected and composite is being output ... =1), prevents the PI from not booting on one of my ... in there that I've not tried yet about enabling "game ...ZXBaremulator v3.H(ikoki) BetaHi, Thanks to a Recreated ZX kindly donated by Hikoki, I've added support for it to ZXBaremulator. Now two keyboards can be connected to the PI…
... Recreated. Value 800 causes to NOT always detect the Recreated. (I ... one working RZX keyboard is not detected when a pc keyboard is ... check why the emulator does not parse several parameters in a ... .txt
I've not played many games yet with ...What is this?Found on eBay [img]https://i.ebayimg.com/images/g/3N0AAOSwUPlcmv5v/s-l1600.jpg[/img]
... to check it works or not (dead ULA not uncommon afaik) I should ... 'm afraid its serial RS232 not a joystick interface (Interface 2 ... connector when its connected or not.Magnum Light Phaser supportHello I've been hoping as well as searching Emulators that support the Magnum Light Phaser as my original ZX Spectrum 2A+ James Bond Action Pack won'…
... the left mouse button was not detected as the trigger, as it ...Breaking the Ice (another 1 line BASIC game)@Patters pushed me to do it... This is another 1-line BASIC game, with the same restrictions discussed. The mission: to save 10 penguins that a…
... is "magenta" the key is not detected). I mean that the response ...Broken keyboard due to broken ULARecalling csmith's thread about dead ULAs, a thread appeared in the Zonadepruebas (Spanish) forum regarding... a dead ULA, but only a partially dead …
... forum regarding... a dead ULA, but only a partially ... br />
"Another ULA knackered!" I thought...but... how ... if it was not working, the ULA isn't selected ... for the Z80, not the ULA's side of the ... keyboard inputs were being detected. There must have been ...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, but ... 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?< ... it is indeed the ULA that fails mostly?
When is a clone not a clone?If a Spectrum is built from scratch, using new components where available, is it a clone, copy or something else? See, I won an unpopulated Spectrum…
... PCF 1306P IC, LM1889 IC, ULA IC, the loudspeaker and the ... the board.
So, not being built at the Sinclair ... factory, it's not a "proper" Sinclair.......
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
I remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board.
It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ?
Thanks.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…
... Ramsoft incorrectly states that ULA doesn't stop CPU ... to. CPU is then not doing anyhthing clever at ... br /> [*]The ULA address drivers do not open while they ... I'm curious what exactly ULA is doing then.
ULA. The address while bytefetch is not random!!!< ...Spectrum ULA replacement!Hi gang.. The Speccy 48 ULA Replacement is *almost* here ;) There has been lots of activity in building the CPLD board, sorting out some irritating…
... gang..
The Speccy 48 ULA Replacement is *almost* here ;)
Anyway, the machine with ULA replacement doesn't quite boot ... a 3.3v device and not providing a clock swing that ...ZX81 ULA 2C210E wantedHello, I'm in need of a working 2C210E (not the earlier 2C184E) ULA chip used on zx81s and Timex1000s. These were sold on ebay for 9 quid each some …
... a working 2C210E (not the earlier 2C184E) ULA chip used on zx81s ... each some months ago but not any more. I'm willing ...IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... from memory by the ULA to draw the screen. ... to detect when the ULA has finished generating the ... contended memory, and the ULA stops the Z80 clock ... Z80 resumes operation, the ULA has been released the ... (both directed and not directed to the ULA) as contended I ...
