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128k ULA pinout?Is there someone who has a circuit diagram or pinout for the 128k (+2) ULA?
... the toasrack model (or the +2 grey model).
Here you have ... 's internally a divide by 2 stage with two complemented outputs ... .
A divide by 2.5 stage gives the pixel ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
Just to make sure that my computer is not causing this, I've changed to a +2 grey. Now your GAL boots fine everytime (as mine), but in 48K mode. If I do a OUT 32765,0 it boots again with ROM 0, showing the menu. My equations too. -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
Video of +2 grey booting (reset button) with SAM Messenger, GAL in test:
[url]http://www.atc.us.es/~rodriguj/plusgrey_booting_sam_messenger_gal_test.avi[/url]
Here you will see that the computer seems to boot twice. -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... with the original GAL, the +2 grey has booted into 48K mode ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... is connected. so I opened +2 (grey) and it is connected somewhere ... ;]
EDIT: 13B (on +2 grey) is connected stright to ULA ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... =ub880d;646033]EDIT: 13B (on +2 grey) is connected stright to ULA ... -
Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
Here is my old fixed schematic of +2 (grey)
[url]http://velesoft.speccy.cz/other/zx128plus2-iss3-schematic%28corrected_v01%29.png[/url] -
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... ULA than the 128K (the +2 grey adds a small heatsink, contributing ... -
THE ROM CHIPSDoes anyone know which are the ROM chips in ZX Spectrum 128K +2?
Is there a schematic to change the rom in a +2 (Grey) for an eprom?. -
THE ROM CHIPSDoes anyone know which are the ROM chips in ZX Spectrum 128K +2?
There's no need to change anything in the +2 grey to put an EPROM instead of ROM, isn't it? So no need for a schematic (unless you can't locate the ROM chip in the PCB) -
+2 troublesI received a supposedly working +2 in the mail a couple of days ago. Sadly I've been unable to get it to load anything from tape or the tape input. W…
Ahhhhh problem solved,
for some unknown reason I thought you were using a +2 Grey.... figure..... Had I of realized it was a +2 (AB) Black, then I would of informed you that the phono connector is output only (unless you mod it =) ) -
WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... in both models, the 128k +2 (Grey) below, also has pin-strip ... one of the dirtiest 128k +2 spectrum's in the world ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... sound carrier. And R46 on +2 (Grey) is for clocking, if I ... studying the schematic of the +2. Not going to do anything ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... sound carrier. And R46 on +2 (Grey) is for clocking, if I ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
... things. ;)
On the +2 (Grey), if I am not wrong ... -
+2 (Grey) S-video?I have a pretty good Composite/S-video to VGA adapter that does a nice work of running my retro machines on an old LCD screen. However, it looks best…
[QUOTE=Johan1973;652898]On the +2 (Grey), if I am not wrong, ... -
Spectrum +2 EPROM in Spectrum +2AHi, My friend Marc bought a +2A from Tim Abbott at the Spectrum 30 event. Back in the day there were companies selling +2 ROMs to put into +2As to r…
... />
I have 2 grey +2's one is stock the ... br /> Stock Grey +2 0500 ISS3
original grey +2 rom: DivIDE ... br /> modded Grey +2 Z70500 ISS3
original grey +2 rom: DivIDE detects ... work with the original grey +2 rom (only because it ... -
Raspberry Pi anyone?Have been very impressed with the look and sound of the new Raspberry Pi. Being unable to program anything other than simple basic on the spectrum, t…
... mine in my currently vacant +2 (grey) case and having 4x usb ... your common-or-garden PS/2 keyboard to USB adaptor contains ... -
"Knightmare", new game by ClimacusYes! The day has come. Climacus has already published via Bytemaniacos web site his new game. After successing with Speccy Bros and RetroInvaders, re…
Yes, the +2 grey machine.
It freezes with a white border on intro screen.
:(
I?m using esxDOS 0.8. -
RF TuningWhat is the actual RF frequency that the Spectrum +3 uses? Thanks
... the composite mod for the +2 (Grey? Black?) is larger than the ... 8 pin DIN on my +2 and connect it to a ... -
RF TuningWhat is the actual RF frequency that the Spectrum +3 uses? Thanks
... the composite mod for the +2 (Grey? Black?) is larger than the ... 8 pin DIN on my +2 and connect it to a ... far as I know, the grey +2 does output proper composite signal ... -
Half dead divIDE helpHi. My divIDE boots up fine but nothing comes up when I press its NMI button. The button was tested and is ok. Any advice?
Hmm... I had an incident like this with a +2 grey - it just didn't like my CF adapter, despite it working fine with the same DivIDE and CF card on both my 48k machines. -
Dedicated Spectrum Emulation Machine Based on Raspberry PiI've mentioned this in another thread, so I thought I'd give it a thread of its own. I've wanted to build a dedicated Spectrum emulator for a long t…
... to base it on a +2 (grey) case and see if I ... -
Spectranet and toastrack issueI've been using my spectranet with no problems on my standard 48k but just started using it on the toastrack and am having an issue. That being that…
... don't have a working +2 grey to test to see how ... that (I do have a grey +2, I just need to get ... -
Spectranet and toastrack issueI've been using my spectranet with no problems on my standard 48k but just started using it on the toastrack and am having an issue. That being that…
... don't have a working +2 grey to test to see how ... that (I do have a grey +2, I just need to get ... -
Suggested Spectrum model for retro hobbyist?I'm planning on getting myself a Spectrum of some sorts to add one of the most famous 8-bit computers to my retro collection (already have C64, A1200…
... money, then go for a +2 (grey version), which has been overhauled ... -
CAPS SHIFT on Spectrum+ ComputerI have just recently supplied a couple of replacement Spectrum+ keyboard membranes to a customer in Barby, Germany. Although something may have been…
... have same problem on my +2 grey, games loading fine but when ... -
Level design and homebrew(g0blinish's thread on random maze generation prompted me to post this thread.) In your opinion WOSSers, what proportion of level design is [B]scien…
... much. This is often called "grey-boxing" - building boxy levels with ... default grey materials. When you've got ... a fun grey-box level you can start ... development style of 1) prototype, 2)grey-box, 3) polish, make the ... -
PlusD mini - production startedI'm developing a PlusD clone, with some features stripped to make it very affordable. The real PlusD and German clone have an 7805 regulator, but I …
... patched version only for ZX128/+2(grey) with correct start to USR0 ...
