Changes

The practise of some GX4000 cartridge game developers was to directly put an almost unchanged game from the CPC into a cartridge for the Plus/GX4000.A game which had small changes (often just using the Plus's palette) was called a "Almost Direct Disk to Cartridge Port".

Of course this didn't help the The most common size of [[PlusCartridge|cartridge]] range at all used was only 128KB which had less capacity compared to a 3" disk. The standard DATA format had 178K of useable storage and was almost as shameful as later (1990) disc games had around 210KB of usable storage on each disc.This meant that a direct Disk to Cartridge port would need to have something removed so that it would fit into the [[Speccy Port]] techniquecartridge space.(It is worth noting that 256KB ROM and 512KB ROM (maximum capacity for a rom) can be used with cartridges but probably because of cost reasons most used 128KB ROMs. )

This A small number of games on tape/disc (e.g. Bloodwych) used tape/disc to store game state (so play could continue after), but there was a cheap and fast no way to quickly release store game state on Cartridge games. (i.e. the cartridge contained an EPROM and the ACID protection chip only, no EEPROM or RAM).

Of course this direct disk to cartridge didn't help the [[Plus]] range at all and was almost as shameful as the [[Speccy Port]] technique, but it was done because it was a cheap and fast way to quickly release games. Another problem came from the fact that both the 464Plus and GX4000 (essentially a cut down 464Plus) had 64KB ram. As a result using the Plus features to the full was not so simple if the game was to run on these systems.  If 128KB ram had been the minimum then this would have allowed more flexibility for graphical data, sampled sound etc and would have easily enhanced a 64KB only game.  == Almost Direct Disk to Cartridge Port == Most games with CPC and PLUS versions are "Almost Direct Disk to Cartridge Port", a "Direct Disk to Cartridge Port" with small modifications. The use of the extra Plus features varied a lot. Some didn't use much, others used more. == Examples of Direct Disk to Cartridge PortPorts == These games are identical in look to the CPC versions with no use of Plus features: *[[Batman The Movie (Cartridge)]] *[[Barbarian 2 (Cartridge)]] *[[Mystical (Cartridge))]] These could have benefited from using the Plus 4096 colour palette as a minimum. Please visit their respective pages to read more about these games. == Examples of Almost Direct Disk to Cartridge Ports == Some other cartridge games looked almost the same as the CPC version, but did use some Plus features. Some examples:

*[[Operation Thunderbolt ( Cartridge )]] *[[Klax ( Cartridge )]] *[[Tintin On the Moon (Cartridge)]] This was still better than the direct ports, because it could give a more "16bit version look". Please visit their respective pages to read more about these games. == Examples of games developed using lots of Plus features == All cartridge games should have followed the example of these games: *[[Pang ( Cartridge )]]*[[Navy Seals ( Cartridge )]]*[[Plotting ( Cartridge )]] All these games were developed with the Plus features in mind, and all cartridge games should have been of this quality. == Side-by-Side comparison of ported games == *[https://www.youtube.com/watch?v=20ZBzhKoGdI Batman the Movie, Barbarian 2 & Operation Thunderbolt] *[https://www.youtube.com/watch?v=DRDlE0f8GaI Klax, Mystical & Super Pinball Magic] *[https://www.youtube.com/watch?v=nPEeqIEgO_0 No Exit, Panza Kick Boxing & Wild Streets] *[https://www.youtube.com/watch?v=3LaHwU5A0gk Crazy Cars 2, Fire & Forget 2 & Pro Tennis Tour] *[https://www.youtube.com/watch?v=_XNDx8A8WUQ Switchblade, Tin Tin on the Moon & Dick Tracy] == Price comparison == Thankfully most of those games were known as good games on the CPC. The bet was that it would still be a good game on [[Plus]]. Yet people were not interested in buying an expensive cartridge with no or few advantages when the CPC version could be bought for cheaper and played on the Plus. UK prices: in 1990 when the Plus/GX4000 was released, cartridge games were sold at £29.95, while disc versions were normally £14.99 and tape version was £9.99. Blank discs were £2.50 each. (Source Amstrad Action October 1990)  French prices: in 1990 when the Plus/GX4000 was released, cartridge games were sold for 250Fr , 150Fr for disc and 100Fr for tape. Blank discs were 20Fr each. (Fr = French Francs, pre-Euro currency in France).

Yet people were not interested in buying an expensive cartridge with no or few advantages when the CPC version could be bought == The present and played on the Plus.(Cartridge games were sold at £39.99, while disc versions were normally £15.99 and tape version was £11.99)future ==

Most games with CPC and PLUS version are It is easy to make a "Direct Disk to Cartridge Port" with some modifications.Yet by using the use of the extra PLUS features varied a lot[[No$cart]] utility by [[Nocash]].

Batman A number of unofficial cartridge games have been made this way and Barbarian 2 could some have make great use of 2 button paddles been even been sold in nice packaging and a 4096 colours palette.sold on Ebay.(See [[Bootleg Cartridges]]).

It is nowadays a common feature to modify existing CPC games to take advantage of some plus features, mostly the [[Plus]]'s bigger palette, but often these remain on disk.With [[No$cart]] these could be converted to cartridge and made into "Almost Direct Disk to Cartridge Port", just by modifying the colours palette to match the [[Plus]] capability.

Yet heavier modifications can be seen tooMost cartridges were the original games released from the GX4000 era so these ideas were mostly applied to games. To apply this to utilities you would need to have drivers to access disc/tape for storage, or include the OS/firmware in your cartridge.

As most cartridges were Now that the original Games release from the GX4000 era, it was mostly applied to games, yet the crack operation of the ACID protection chip is known, and production the development of modern era Cartridges (or multi-ROM cartridges) various home brew cartridge hardware solutions may lead to Direct Disk to Cartridge Port applied to any kind of softwareor new cartridge games that make fuller use of Plus features (See [[Converted_GX4000_games]]).