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+2A/+3 +2B and +3 Schematics (again)Just to announce that I've done a fairly big update/re-organisation of my website, and specifically the [URL="http://alistairsserver.no-ip.org/spectr…
... I've gathered about the differences between different board revisions, the ... a new schematic for the +2B ISSUE2 and got lots of ... of factory mods on the +2B boards.
Still no ... />
TL;DR: The +2B schematics have been updated ;) -
Spectrum modsHi all, Looking at my Spectrum stuff and the mod`s I have done. How many of you out there have done Spectrum modifications? And what are they? 1. …
... far I have done the +3 sound mod, my own version ... Video out mod
3. +2B cassette phono plug load mod ... -
Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …
... 0xD18C Level surrounds (3 bytes per level: top ... Repton running left frame 3 2B: Repton running left frame ... Repton running left frame 3 2B: Repton running left frame ... br /> Version 2/3 pages (in +3 mode only)
... 6 -
7 +3
8 +3
9 Pentagon ... -
Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…
... 36 03 LD (HL),3
2B DEC HL
... (HL),1Bh
2B DEC HL
... (HL),76h
2B DEC HL
... -
ZXC3 Rom CartridgeI recently aquired a ZXC3 Cartridge Rom from [URL="http://www.fruitcake.plus.com/"]Paul Farrow[/URL] fully populated with the latest diagnostic softw…
... />
I ask because my +3/2B flash board can theoretically have ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... /+2 and the +2a/b/3.
Which runs the ... />
Anything written for the +3/+2B, or written assuming the contention ... manual will work on a +3/+2B but suffer on a 128k ... suffer on the +3/+2B.
The +3/+2B machines were on the ... -
Z80 Edge Connectors - ProjectsHello there my fellow Spectrum-mites I am looking to source a few of these connectors - while I could just rework some old ISA socket for proto's I …
... rom replacement boards for the +3/2B?
sounds like you'd ... -
divide question - ribbon cable?Hi - recently got a divide and loving it but not enough room on my desk. Is anyone aware of a supplier of a ribbon cable that could sit between +3 …
Well I don't have a DivIDE... I think Winston has done some experiments regarding bus lengths. I know he found the Sinclair 128k is the worst machine in terms of loading the bus. I suspect the +3/2B will be the best. -
ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…
... /> The 12v line on the +3/2B is already fed through a ... -
Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…
The keyboard membrane is totally different on the +3/2B machines -
Use a +2/+3 case as a replacement keyboard for 48KI was just wondering if a 48K Spectrum motherboard could be housed in a +3 case, and somehow the keyboard be connected so that it could have a proper…
... is totally different on the +3/2B machines[/QUOTE]
But ... -
New Flash Rom Board for +3 and Black +2As per the other thread I've now sold out of these boards. There is however the possibility of getting a new batch made, and at the same time making …
... both rom sockets in the +3/2B and can be switched (manually ... the capacity to store the +3 operating system twice so you ... in the banks e.g. +3 in one and +3e in ... -
Double Dragon Remake: The Development ThreadOk guy's, so this is the new thread that will be focusing on Jim Bagley's development of the Double Dragon remake that was first proposed by myself a…
... add the pages for the +3/2B to the FAQ wiki article ... /> 128k and +2: pages 1 3 5 and 7 are contended ...
+3 and black +2: pages 4 ... -
Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…
Jumpers on a divide etc will still need to be set to "+3". This is to deal with the fact that the +3/2B have two romcs lines. -
ROM-elHi, I have a bunch of [URL="http://store.go4retro.com/products/ROM%252del-23128%7B47%7D23256-FLASH-ROM-Replacement.html"]these[/URL]. They are 23128…
If you connect the WE pad to the write enable line in the speccy you will be able to reprogram the chip in circuit like I do with my +3/2B flash boards. I can help you write a programming tool if you need one. -
ROM-elHi, I have a bunch of [URL="http://store.go4retro.com/products/ROM%252del-23128%7B47%7D23256-FLASH-ROM-Replacement.html"]these[/URL]. They are 23128…
... like I do with my +3/2B flash boards. I can help ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... ]
Yes, the +2A/+3,+2B and +3B have proper bus ... -
Video output questions...Two questions... [QUOTE]1. The yellow and blue colours seem out of phase on the display. Is this normal for an RF connection to the TV/monitor?[/QUO…
... a composite mod to my +3/+2B instead, this gives a nice ... -
+2 issue oneI can't remember seeing this model board before, so here we go: [IMG]http://benophetinternet.nl/hobby/vanmezelf/20130605_153957.jpg[/IMG] [IMG]http…
On the +2A/+3, +2B, and +3B boards the issue ... come after the Z70500 Issue 3.
Of course it ... -
Harlequin 128k??Hi peeps... I've seen that you can do a 128k version of the Harlequin board. Is it just the standard board with different chips or is it a dif…
... 2 16kB pages). The +2A/+3, +2B, and +3B have two 32kB ... -
ROM checksum tool.A recent post by Rorthron reminded me about this category and how little activity it's had since it was set up. :-S Reading through the "preservat…
... ROM3 of the Spanish +2A/+3.
I've actually had ... Official ROMs for the +2A/+3 +2B/+3B as far as I ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... for the ZX Spectrum +2A/+3, +2B, and +3B here[/url]. [url ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... CPC-PCW-464-6128-Spectrum-3-/371871687672?hash=item569547a3f8:g:Ko0AAOSwx6pYqe2f ... can be formatted for the +3?
[quote=" ... for the ZX Spectrum +2A/+3, +2B, and +3B here[/url]. [ ... luck.
Right... 3 am... I will be dreaming ... -
Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …
... ) ZX81 or ZX spectrum differences
3) Different legends on keys for ... /> 4) Possible DK keyboard PCB differences for ZX81 and Spectrum ( I ... -
+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…
... name from the +2A to +2B, however both ISSUE 1 and ... found in the "+2B/+3B" diagram of the +3 amendment service manual ... are many differences between the schematic from the "+2A +3" diagram from ... -
Case Moulding Differences - +2/+3 modelsI've been studying the differences between the various 'official' Spectrum case mouldings for the Computer club at our local primary and have example…
I've been studying the differences between the various 'official' Spectrum ... [/u]. (I did see a +3 the other week that had ... is; does anyone have a +2B, +3A and/or +3B that ... approximate positions, as well as differences in physical dimensions and angles ... -
RGB output differences on +2 and +2a/b +3I've got a 37" LG 1080p lcd tv (37LH7000) I'd hooked up my +3 to it and it displays a clear picture (colourwise) however each column looks like it's …
... ) I'd hooked up my +3 to it and it displays ... it's wired for my +3) will pass the picture through ... opus discovery drives then my +3 cause of the drive. Now ... + I started to use my +2b cause it was black and ... the noise distortion of my +3.
However I'm ... -
Crappy video in +2B/+3Maybe it's not a failure in my ZX Spectrum, but I need some advice... I've got some spectrums (a ZX Spectrum +, two spanish ZX Spectrum +2B and a mo…
... spanish ZX Spectrum +2B and a modified +3). Because modern TV tuners ... /> The problem is that +2B and +3 shows crappy video in the ... player.
- ZX Spectrum +2B and +3 works with plasma TV and ... -
Diag rom works cartridge on +2A/+2B/+3I'm not sure anyone has tested this before: using the diag rom (Paul Farrows) on a +2A/+2B/+3. I had a +2A with a problem, so I wanted to use the di…
... (Paul Farrows) on a +2A/+2B/+3.
I had a ... and /ROM2 on a +2A/+2B/+3.
- the RAM Turbo simply ... large enough for the +2A/+2B/+3 power connector.
But ... -
ESXDOS 0.8.5 and .Z80 on +2B or +3Last week I received some .Z80 snapshot files from a DivMMC EnJOY! user to test. These files didn't work on his ZX Spectrum +2B. [URL="http://benophe…
... work on his ZX Spectrum +2B.
[URL="http://benophetinternet ... Then I grabbed my last +2B board from the shelves and ... it wasn't my +2B, I asked Imre to ... failed on his +2B, and even on his +3.
... are different on +2, +2B and +3?
Or is it ...
