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ZX Spectrum +3 keyboard faultHi all I've powered on my zx spectrum +3 for the first time in a couple of years. It seems to have developed a fault with the cursor keys. I can'…
... 128 menu except loader :(
All other keypresses (that I can test ... -
Test card screenStarted off just messing about in order to test a machine. But ended up with this: [code]10 FOR a=0 TO 0 STEP 0: PAUSE 1: BORDER 1: BORDER 2: BORD…
... messing about in order to test a machine. But ended up ... -
doubt about swapping ULA in an issue 2 boardIs it possible to swap a 6C001E-6 ULA type with a 5C112E ? I have this issue 2 board that is not booting, it shows me a black border with horizont…
... to swap a 6C001E-6 ULA type with a 5C112E ?
ULA.
Diagnostic ROM doesn't ... would like to swap the ULA and Z80 to narrow the ... like to try swapping the ULA as I have another working ... -
The ZX Spectrum ULA bookFound a copy of the ZX Spectrum ULA book by Chris Smith that I've never read. This is a new book that was given to me years ago and I've never got ro…
... copy of the ZX Spectrum ULA book by Chris Smith that ... -
zx spectrum ULA upgradei have a issue 2 zx spectrum 16k which i upgraded to 48k .. i believe the ULA is faulty (ULA5C112E-2) .. seems intermittent i know a later one can be…
i have a issue 2 zx spectrum 16k which i upgraded to 48k .. i believe the ULA is faulty (ULA5C112E-2) .. seems intermittent i know a later one can be used but should some resistor values be changed to match it ?
thanks mark .. -
Microdigital TK95 / TK90X - my experiencesAs asked for by Renegade [url="https://worldofspectrum.org/forums/discussion/58189"]here[/url] I'll do a short writeup of my experiences with my TK90…
... -N _or_ PAL-M (the ULA supports both standards) to get ... 's good enough to further test the machines.
I went ... be done (since the TK-ULA outputs RGB + bright directly) but ... -
zx spectrum 48k issue 6A boot fail- black paperohh whats wrong with this poor specie .. boot fail,, border white & paper black .. when reset it shows the red lines to indicate that the CPU is cycl…
... .. but the contention test fails, the interrupt test has a warning about ... a known working -7 type ULA. checked most of the signals ... -
48k ULA heat sink required ?ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ? i wonder if anybody has done any …
ULA heat sink worthwhile mod or just internet hype ? if worthwhile is a cheap heat sink going to cut the mustard ?
i wonder if anybody has done any before & after heat tests ? -
Interface 1 ULAIs there a technical description of the functionality of the Interface 1 ULA, similar to the "The ZX Spectrum ULA" book? Specifically, what is the…
... functionality of the Interface 1 ULA, similar to the "The ZX ... Spectrum ULA" book?
Specifically, what ... the ROMEN lines of the ULA? Superficially, ROMCS feeds into the ... -
Using a thermal camera to fix speccy's.Hi All, Thought I'd share another repair... Got a board that collapsed the bench supply straight away ( I run a bench supply and give it just enou…
... 16 K ram chips. The ULA can be seen below them ... .
Did a 5V test on the 7805, and it ... -
Starglider 128Can anyone help with this? I've downloaded this game from several sites but none of the versions had the excellent speech synthesis I remember this …
... a Z80 file of Starglider 128 that is definetly the 128k ... of these is diffucult to test.
If you want ... -
Assembler code from tutorial, problem!I was wondering if anyone could help me decipher this z80 assembler code? ORG 60000 LOAD 60000 EA60 21BCEA LD …
... loads acc with the value 128
so when the byte ... referred by NMBRS, so the test for 8ah is effective only ... -
WANTED: tape replacement for +2?Any tape replacement possible for a +2? My +2 works wonderfully but the incorporated datacorder is simply worn out and won't load ANYTHING. Dirty sig…
... br />
For a correct test do not press any key ... machine.
The ULA chip uses the same pin ... FE are always one. The ULA with the lower 16K of ... of the Z80 and the ULA are connected by small ... the lower 16K, the ULA halts the processor if it ... -
RealspectrumCan anyone tell me why sometimes when I launch realspectrum it locks up on the welcome screen? I am running it in a DOS shell within windows 98. I'm …
... the menu bar on the 128 I press the down cursor ... Woody said, you need to test using the sound muted (latest ... -
Machine Code ChallengeHere's a challenge for all you Z80 programmers. Points to be awarded for elegance and brevity. (I haven't got the solution either) HL addresses the …
... is impressively compact.
The test values that appear earlier in ... becomes 247,128
128,1 no change
128,64 becomes 128,96 ... -
FoonI've recently discovered Foon, which is a Speccy emulator that runs on the Gameboy Advance. I have used it with a GBA emulator to try and get a feel…
... will fit, try making a 'test' file - i.e. don't ... the flash cartridges in 64, 128 and 256 megabit sizes.
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... ports
>ZX Spectrum 128 GPU
>ZX Spectrum ... 128 DSP
>2 heatsinks ... /> GPU? Are you using the ULA or not? If you're ...What is your worst Speccy related memory?We've had the good times, but there were bad times too. I will give you two choice cuts from my back catalogue... Over at a friends house, wanting to…
... my 128+2. I was trying to get Daley Tompsons Super Test ...Number 6 in the Village (text adventure) Please help!!!Does anyone have a solution to this text adventure. I've tried to escape by air and sea using the jammer but it hasn't worked. I've been playing it …
... /> Message 65
The village test card comes up on the ... it.^{7}
Message 128
It's an ideal ...Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…
... TAP into RealSpectrumEmulator, and use ULA FX Hardware Multicolour to display ... work hopefully even better on 128. i explain my idea at ...helpHi, I am new to this forum. I have purchased a Speccy from ebay but I am having trouble getting any games to load. I dont really have much technical…
... 'sinclair infoseek'.
fill in 'test program' and click on 'search ... ).
it will work on 128, but unfortunately this program is ... to reflect the 128 speccy memory and will test/report only 48 ... be some other programs which test the 128.Detecting +3 or +2AIs it possible to detect whether your BASIC program is running on a +2A/+3 or a proper 128?
... between a +2A and +3 test bit 4 of FLAGS3 (23398 ... it's a
Sinclair 128 or 65 (A) if it ... 110 if it's a 128 machine or 191 if its ...Detecting +3 or +2AIs it possible to detect whether your BASIC program is running on a +2A/+3 or a proper 128?
... machine" instead of "Sinclair 128" as that test comes later.
128 machine is running in 48K ...Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
The 'snow bug' in the ULA is present in all models ... present on a toast rack 128.
Cheers,
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... some letters repeat as the ULA got confused)
(Woody ... reproduce this even with 'emulate ULA snow' turned on?)
128 didn't crash in any ...Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
... .html[/url]
Multiface 128 : Emulated and included with Spin ... need to find the "multiface 128 rom" for yourself. It needs ... to where it says Multiface 128. Then press Okay.
iv) You can now test to see if everything has ...Loading programs directly via SoundblasterLet's just hope this does not sound too silly (I'm a newcomer)... Is is possible to connect a real Spectrum's MIC port to the audio out port of a Sou…
... loading on my toast rack 128.
We could do ... the input impedance of the ULA pin is). This means the ... a lot louder at the ULA input pin (about 50% of ...
