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Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…
... finally finished analyzing and testing +2A,+3 SCART cable from two different ... out. It displays for about 3 seconds, then it goes out ... seem as clear as the +2A picture. Maybe it's because ... -
Time function?How do you do a timer? Example: Start timer If timer = 10 seconds then reset timer Thanks
... in this section in the +2A/+3 manual: [url]http://www.worldofspectrum ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... somewhere for +3 that copies ROM to a +2a/+3 64K RAM configuration ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... br /> 1) There are two +2A/B circuit boards (ISSUE 1 ... the name from the +2A to +2B, however both ... ISSUE 2 of the +2A/B board has the ... U] +2A built with the "+2A/+3" circuit of the +3 service manual ... from the "+2A +3" diagram from the +3 service manual and ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... version 1 is just the "+2A circuit" which is in fact ... the +3 motherboard with different component population ... that leaves the mysterious version 3...
Looking closely ... ve seen.
(the "+2A/+3 circuit" used numbers in the ... -
Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
... - and you'll need a +2A/+3 for this (or an emulator ... set to +3 mode) - I'd go into +2A/+3 BASIC and type ... -
Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?
... .[/QUOTE]
The +3 and the +2A are actually the same ... />
but yes, both the +2A/+3 and the +2B use the ... -
Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?
[QUOTE=guesser;485410]The +3 and the +2A are actually the same computer ... />
but yes, both the +2A/+3 and the +2B use the ... my PSU used to say +3 on it, I'm sure ... the other way round?) and +2A/+2B/+3 all the same. -
A BASIC quiz[URL]http://equ.in/ox/spectrum/basicquiz/[/URL] On first try: 14/20
... (PLAY), have never used +2/+2a/+3, forgot you can have spaces ... -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... work on a +3? I know the +3 has an internal AY ... that is mono? IIRC my +3 from my youth sounded like ... stereo output.
The +2A/+3 circuit famously has terrible audio ... -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... stereo output.
The +2A/+3 circuit famously has terrible audio ... 't be used with a +3? Regarding the audio circuit, the ... +3 that I had as a ... -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... t be used with a +3? Regarding the audio circuit, the ... +3 that I had as a ... network.
Regarding the +2A/+3 sound, I've not seen ... any evidence of a +3 with the sound fixed at ... the relevant resistors in my +3 to match the +2B/+3B ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... is not even possible on +2A/+3 models, as the INT line ... -
+2a doesn't load anymorea machine i got on ebay a couple months back, always had the odd game that wouldn't load, but now it seems to have stopped working alltogether. soun…
... tape function as the +2A will become a +3.[/QUOTE]
The +2A/+3 rom doesn't have a ... 483530]I believe that the +2A has a tape/sound socket ... I would call [I]true +2A[/I]s, i.e. ... not a +2B in a +2A case) have tape loading on ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
... about this, I think the +2A/+3 schematic is done, so I ... -ip.org/public/spectrum/schematics/+2A+3schematic.png[/url]
VIC 20 on the SpectrumThe original "20 Commodes" program released for CSSCGC 2008 has been improved and now has its own entry in WoS. The improved code has been sitting on…
... RAM and cartridge extensions (+2A/+3 only)
3) VIC Screen memory is ...ZX 48K and TR-Dos?Is it possible that the ZX 48K can run TRD files? I mean is it possible to take a ROM that has TR-Dos inside? Micky
... ZX48 or 128kB (not on +2A/+3).
Divide interface is ...Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... from the original +2A/+3 design are present on +2A motherboard!
< ... factory as a +2A built onto a +3 motherboard. (As per ... ]
The +2A is a +3 motherboard (Z70830) with several ... sound circuit present in the +2A/+3 design. These boards were ...zx microdrivesHello. I think those zx microdrives look damn sexy! There are a few on ebay, but seem to be quite pricey. Can anyone tell me if they are worth it in …
... /> I think it is the +2A / +3 that they don't work ...Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…
na_th_an is entirely correct: the +2A/+3 do [i]not[/i] have the floating bus.Playing SID music on AY??Hello. Some time ago, with occasion of another thread, I was asking about possibility of making a very certain thing - a SID emulator for Spectrum …
... , which would limit it to +2A/+3. That's mainly due to ...Playing SID music on AY??Hello. Some time ago, with occasion of another thread, I was asking about possibility of making a very certain thing - a SID emulator for Spectrum …
Nice one there Obo :) it shouldn't be too difficult to reuse the MSX code and do an AY SID player (altough limited as you said) for +2A/+3 :) I wish I had some time, but currently not. Anyone up to the task ?ROM interface add-ons?Is there a summary description of various ROM interface add-ons, listing things like number of multiple ROMs holdable, compatibility with Interface 1…
Also see Guesser's +2A/+3 128K flash ROM board (fits internally within a black +2 or +3, programmable in-system).Genesis: dawn of a new day, new game from RetroWorks!It's been a long development, but finally we made it. We proudly present the latest game from RetroWorks, Genesis: dawn of a new day. [img]http://ww…
... it :). Both the toastrack and +2A/+3 variations (to check the different ...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... games for correct running on +2A/+3 (all this games work on ... ://velesoft.speccy.cz/other/games-+2a-error.zip[/url]
< ... unusable on ZX128+2A/+3).
On +2A/+3 machines with original rom ... games. Next way is replace +2A/+3 rom with original ZX48 or ...Splitter & fixer & Kempston joystick interfaceI'm thinking of developing a small interface that combines these three elements: 1. A splitter like the [URL="http://www.worldofspectrum.org/infosee…
... is a converter for the +3's edge connector to allow ... printer (as the signals on +2A/+3 models are different when compared ...Splitter & fixer & Kempston joystick interfaceI'm thinking of developing a small interface that combines these three elements: 1. A splitter like the [URL="http://www.worldofspectrum.org/infosee…
... a converter for the +3's edge connector to ... (as the signals on +2A/+3 models are different when compared ... external memory to ZX128+2A/+2B/+3. Only 9V and ... -5V absent on +2A system bus ... (this need hardware patch in ZX128+2A/+2B/+3 ...What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... between the 128k and the +2a is the floating bus, and ... synchronise the screen. With a +2a/+3, Amstrad fixed that "bug" and ... d only go with a +2a if you want the most ... get a grey one - the +2a was black, otherwise identical in ... looks to the +2a.
D ...DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... ROMOE signals on ZX 128/+2A/+3 is disconnect = external device can ... mode on ZX Spectrum 128+2A/+2B/+3 with DIVIDE/DIVIDE PLUS ... games using allram mode on +3 will work with DIVIDE/DIVIDE ...Tau Ceti 128K on +3?does anyone know if there are issues with running [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=%5ETau+Ceti+-+The+Special+Edition$&pub=%5E…
... ]
SPECTRUM command on +2A/+3 rom switch to 48 basic ... (it's different than on +2A/+3 models)
USR 0 ... identical on all ZX128/+2/+2A/+3 models - reset to 48 rom ... menu (on all ZX128/+2/+2A/+3 models) switch to 48 basic ...
