A2024

Amiga specific 15" (there may also have been a 19" version) monitor which gives 1024x1024 on any Amiga without a gfx card. NTSC screens may differ slightly, perhaps 1024x1000. This monitor is very unique in that it is speficially made for the Amiga and is unlikely to work with anything else because it contains some strange logic. Firstly it is monochrome (white, dark grey, light grey and black), connects to the Amigas 23pin video port and contains an internal flicker fixer for interlaced modes. The way the monitor achieves such high resolution is actually by displaying 6 standard PAL screens in 2 rows of 3, where each screen displays a portion of the overall picture, so there is probably some sort of buffer in the monitor. Apparently there is a 2024 clone made by Viking but this is unconfirmed.

ADDENDUM

The pictures are shown in a very low refresh rate of about 10-15 Hz, which is combined with a very long shining phosphor to give a calm picture. That way the Amiga Custom chips could display high resolutions without having to be changed itself. The idea was to give even OCS users some possibility to do serious work without having to buy an expensive graphics card (and without having Commodore to do a redesign of the chipset which would have been also very costly). OCS users had to live with a lower resolution (i think it was 800 pixels by 1024 instead of 1004 by 1024 - the odd number btw. resulted from a bug in some driver or OS part that was corrected very late compared to the date of knowledge). It's also possible that there may have been a version of the A2024 which as A4 sized as it was primarily designed for doing DTP work.

Thanks to John Hertell and Ralph Ewers