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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…
... looking at an issue 2 schematic, if your spectrum has R57 ... -
divIDE woesHi y'all ! Last night I built my lovely divIDE ;-) I downloaded flasher and +divide.tap from [url]http://www.biehold.nl/rudy/+divide/index.htm[/url…
... ;-) )
I've got the schematic here in front of me ... -
Spectrum ethernet... step 1.1Yeah, a tenth of a step :-) Here's the W5100 board up and WORKING: [url]http://www.alioth.net/tmp/w5100-online.jpg[/url] This is called the "Get Th…
A prototype was yet made by "Speccy do it yourself" and this is the schematic:
[url]http://zxspectrum.hal.varese.it/ethernet.jpg[/url]
the "only" way to do: to write a device driver!!!!!!!!!!! -
Small ROMs updateI've finally got around to updating my [url=http://www.shadowmagic.org.uk/cgi-bin/spectrum/roms.pl]ROMs page[/url] with some of the ROMs I've "recent…
I noticed it starts with HC.
Roelof Koning has a HC2000 Spectrum.
Is it the ROM?
Here is a link
[url]http://www.interface1.net/zx/clones/hc85.html[/url] -
How does the Z80 work internaly?How does the Z80 work internaly, i.e. how does it actually execute a machine code instruction? When it fetches a byte from the memory and finds, for…
[QUOTE=Rickard;229390]
how does the CPU at a low level know what to do and how does it execute this?[/QUOTE]
This is done by its internal schematic, completely on hardware level. There's no lower-level microcode in the Z80. -
Floppy Drive on +DHello, I have unfortunately no old drive left, but want run my +D. Problem is that newer drives has no switch anymore for choosing between drive 1 an…
... as i remember from the schematic), you may always hook it ... -
Speccy plus composite modHi folks, I have 2 48K speccy plus machines both with really poor RF output, one is very weak and the other wanders and white tears across the scree…
... would like to see the schematic for it.:wink: -
Speccy plus composite modHi folks, I have 2 48K speccy plus machines both with really poor RF output, one is very weak and the other wanders and white tears across the scree…
+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
... /> A quick look at the schematic and it seems to me ... />
Does anyone have a schematic for the original Sinclair 128k ...+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
I think the 128K Technical manual (the service manual) in the documentation section has a schematic.Where shall I start to look ?I got hold of a faulty 48k, Issue 6. It displays a picture like shown below: [URL]http://www.gjelberg.no/miscpics/speccyfault.jpg[/URL] Some of the…
... .html[/url] ), there is a schematic on a photo with yellow ...Where shall I start to look ?I got hold of a faulty 48k, Issue 6. It displays a picture like shown below: [URL]http://www.gjelberg.no/miscpics/speccyfault.jpg[/URL] Some of the…
... 27 (as shown on the schematic) to GND instead of VCC ...CF to IDE adapterthese things say that they allow a CF card to appear to a computer as an IDE device, at the hardware level. I'm just curious, would a CF card connec…
CF to IDE adapterthese things say that they allow a CF card to appear to a computer as an IDE device, at the hardware level. I'm just curious, would a CF card connec…
Video output (48K)Hello! I've made video mod on my Zx Spectrum. Now the problem of scanning (and tuning) to right channel is history for me. But, now I have another …
Uf, there is a lot of elements around 1889 (I've only now opened schematic). This will not be easy case.
The interesting thing is, that picture from modulator is better? How do you explain that?ZX +3 Disk Drive Problems!Hello! I Picked up a +3 a couple of weeks ago in a shop for 10 quid, I was very pleased with myself. I realised that this thing was a disk drive thin…
ZX +3 Disk Drive Problems!Hello! I Picked up a +3 a couple of weeks ago in a shop for 10 quid, I was very pleased with myself. I realised that this thing was a disk drive thin…
[quote=Johan;238256]I found it. Here?s a link to the pictured schematic of the ABBA switch (snip)[/quote]
What??? Weren't they called the [B]ABBA Teens[/B]?
*gets coat*Does anyone have the CD codemaster pack?Hello [sorry for my poor English] I'm studding the cable of codemaster cd pack [url]http://www.crashonline.org.uk/73/cd.htm[/url] I have some pr…
... ask... Could you post a schematic of the cable somewhere, just ...Pics from my uncle's 48K SpeccyThis was built back in 1987 and it looks old now, but it brings back lots of good memories. [url]http://zxspectrum.zidev.com/zx/1987enclosure/HPIM16…
I finally got my hands on a schematic. Unfortunately some words are in Portuguese.
[url]http://zxspectrum.zidev.com/zx/F_Palmela_schematic.jpg[/url]5 down 3 to Go!!I have just taken delivery of a further two microdrives to add to my collection. I now have 5 Microdrives. Who else has microdrives??Anyone else …
Anyone after 4164s...If anyone's after 4164 RAM... ... I'm in Houston at the moment, and EPO has some 4164 RAM in the shop, 100, 150 and 200ns variety, for $1 each. If …
... 4517's with the msx schematic and this is what i ...Hardware fault - HELP!I bought a speccy 48K (rubber) on Ebay. I was delighted when it arrived. It was in PRISTINE condition, it looks brand new! However, the machine has a…
... if I can find a schematic online... Problem is there is ...i am currently listening to........as i couldnt seem to find the old one, i didnt look that hard :P ive started a new one right after somebody asked me for some slayer ive rediscovere…
... by the name of Diva Schematic. Her hubby is Ricardo Autobahn ...+3 scart cablejust bought a +3 scart cable and when i get everything up on the screen it`s like if its a negative picture. I cant be arsed to send it back if i can…
... 't you check the cable schematic from the site i provided ...Games that used Fuller Box soundThe Fuller Box was an Interface with AY chip sound from 1983. Invasion of the Body Snatchas uses it - to great effect - but does anyone know any othe…
MB02+IDE aliveLast weekend I finished soldering and testing my MB02+IDE. All items work perfectly on +2 grey, on +2A, on 128k heatsink and on 48k Issue2 and 3b tes…
MB02+IDE aliveLast weekend I finished soldering and testing my MB02+IDE. All items work perfectly on +2 grey, on +2A, on 128k heatsink and on 48k Issue2 and 3b tes…