Changes

Jump to: navigation, search

LCD monitor and LCD TV Solution (RGB)

181 bytes added, 14:32, 21 August 2022
=== Direct connections - options without converters ===
==== LCD TV sets (SCART) ====
Many LCD TV sets offer a SCART connector, which often accepts the CPC signal directly. All you need is a CPC-to-Scart cable that you can either build yourself, or buy on Ebay for not too much money. Especially if you wnt a distinct monitor for your retro corner anyway, this can be a pretty nice and cheap solution. Used 15" camping TV sets have just the right size to feel comfortable and can be bought for a few bucks on Ebay or your local classifieds.
Your only enemy here is: screen lag. Some of the LCD TVs perform almost like CRTs, others seem to include a SCART2HDMI converter, and they have a bad lag (see below).
==== LCD computer monitors (VGA) ====
Some VGA LCD monitors are know to support the 15.6kHz frequency. These often can be connected with a simple DIN to VGA adapter. Screen lag of LCD monitors is usually very good and close to non-existing or half a frame max.
There are plenty of converters to connect retro computers and consoles to modern TVs and monitors. Their biggest difference is performance and price. And if you are not willing to do a bit of soldering, you probably will end up with either spending a lot of money - or getting a bad solution.
==== Scart2HDMI SCART to HDMI converters ====
tldr; DON'T. USE. THEM.
Scart2HDMI SCART to HDMI converters are the cheapest and most simple solution. Make sure they (really) support RGB and not only composite video, like the cheapest SCART2HDMI SCART to HDMI converters usually do. Real RGB SCART converters start at around 30€ (2022). They will usually work and you will probably first think, that this is perfect, but they usually add a hefty lag to your screen, easily 120ms or 6 frames.
Avoid Scart2HDMI Scart to HDMI converters for gaming. It's fine if you only want to do a bit of BASIC programming or play adventures, but it's not good for action games.
==== Scan converters ====
There are quite a few scan converters specifically built to connect many (all) retro computers and consoles to modern screens. The most famous ones are probably Framemeister and [https://junkerhq.net/xrgb/index.php?title=OSSC Open Source Screen Converter (OSSC)]. They are very flexible, have lots of options, zero or very low lag - and are really or quite expensive. Actually the only disadvantage they have is, that they are expensive. If you have a big retro collection, with several machines and consoles that you want to hook up to your LCD, then one of those might be the right choice. If not, there are cheaper, still great alternatives.
===== GBS8200 (VGA) / HD-VC9900 (HDMI) =====
These converters have originally been made to convert signals of arcade boards to modern LCD monitors via VGA (GBS8200) or HDMI (VC9900). They do support the signal of the CPC but without any further modification, the conversion quality is limited. It adds 3-4 up to 2 frames of lag and , which might be just acceptable, but many famous games do not and demos won't work due to synching problems. All this changesimproves a lot, once you add the GBS control mod to it. That's basically adding a microcontroller to the original board, that takes over control and adds features and flexibility that are [https://www.youtube.com/watch?v=fmfR0XI5czI&t=879s close to the Framemeister and OSSC]. Also the lag shrinks down to around one [https://www.youtube.com/watch?v=fmfR0XI5czI&t=783s less than a frame], at least if your monitor does not add much lag on top.
See [https://github.com/ramapcsx2/gbs-control GBS Control for GBS8200] and [https://github.com/ramapcsx2/gbs-control/issues/165 VC9900]
===== RGB2HDMI =====
[https://www.youtube.com/watch?v=2CnsQBGAuos The new star on the horizon.] An open source project, that combines a Raspberry Pi with some custom logic, to convert signals from home computers and home consoles to HDMI. For almost every computer there is a more or less different version of the board. You can build the RGB2HDMI yourself or buy a finished version, e.g. on sellmyretro.com . It's features are even beyond those of the OSSC and Framemeister. Its total price is somewhere between the GBS and the OSSC, depending on where you buy it. And its tiny. Its biggest disadvantage is, that you need a different version of the board per console or home computer (well - some computers share a similar signal, so e.g. for the BBC you can also use the CPC version, but e.g. an Amiga or an Amstrad Plus each need another converter version). Screen lag has not been measured yet for it, but it seems to be very low.
162
edits