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MB03+ Ultimate: Difference between revisions
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128K screens on 48K Spectrums
(FPGA core updates (new interfaces) in mid. 2021) |
(128K screens on 48K Spectrums) |
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* Timex '''Hi-Res''' graphic mode (512*192 pixels) | * Timex '''Hi-Res''' graphic mode (512*192 pixels) | ||
* [[ULAplus|ULA+]] colour palette | * [[ULAplus|ULA+]] colour palette | ||
* '''HiRes Colour''' graphic (HRC) of 512*192 pixels and 64*48 attribute cells | * '''HiRes Colour''' graphic (HRC) of 512*192 pixels and 64*48 attribute cells | ||
* '''HiRes Indexed Colour''' graphic (HRXC) with 32 indexed colours | * '''HiRes Indexed Colour''' graphic (HRXC) with 32 indexed colours from the full BGR palette | ||
* 3 types of '''Gigascreen''' graphic mode | * 3 types of '''Gigascreen''' graphic mode | ||
* '''KeyLayer''' (Transparent) graphic mode | * '''KeyLayer''' (Transparent) graphic mode | ||
* '''Radastan''', ZX-Uno based graphic of 128*96 pixels with 16 | * '''Radastan''', ZX-Uno based graphic of 128*96 pixels with 16 ULA+ colours | ||
* legacy TV scan-line mode (7 levels) | * legacy TV scan-line mode (7 levels) | ||
''Gigascreen'' is not originally a real graphic mode. It's an effect created by | The ''HiRes Colour'' graphics takes 12KB of memory and stores pixels in a linear way at the place of the first or the second videoram page. In the HRXC mode the flash bit in colour attributes is not present and the number of colours is enhanced. | ||
''Gigascreen'' is not originally a real graphic mode. It's an effect created by quick changes of screen images. Some TVs, old CRTs or LCD monitors can combine these images, each does this effect a little differently, but most of them produce a mix of colors. On the MB03+, screens are mixed in advance and then a digital output is generated, thus achieving a more perfect display, without flickering the image, on modern digital display devices. | |||
The new ''KeyLayer'' graphic mode allows to display image data from the second video RAM at the place of one selected color in the video RAM no.1. This adds a third colour into an attribute cell. | The new ''KeyLayer'' graphic mode allows to display image data from the second video RAM at the place of one selected color in the video RAM no.1. This adds a third colour into an attribute cell. | ||
The | The MB03+ can present the second video-ram, normally used on 128K computer models only, also with a basic ZX Spectrum 48K, when reading a shadow screen (normally stored in a 128K ram-bank no.7) from the address C000h. Similarly, the normal screen from the address 4000h can also be switched to the address C000h (like the the 128K ram-bank no.5). | ||
===Sound enhancements=== | ===Sound enhancements=== | ||