alphanumerical LCD (HD44780 compatible) are not as expensive as you seem think. the BOM difference between LCD and video solution is : remove the LCD and add an Video Sync Separator chip.alexh wrote:I think the software generated Luma output of SDiskEmul is a great improvement over the models with an LCD display. The BOM reduction and reduction in board complexity results in a product with price point with almost mass appeal.
I think it is a good design.
I have heard that it's video combining can lower the video quality?
I see it was never supposed to directly replace your floppy drive (unlike my suggestion). It allows you to keep your internal FDD (on B: ?) which I can see would be advantageous.
The videos show that it is slightly slow processing the disk images, I guess this is a limitation of the MCU they are using. Perhaps it can use pre-processed images for a speed increase?
(if you want make overlay display, you need an Video Sync Separator chip, like in the sdiskemul)
Remember that it's an very very small market... So if you make an floppy emulator, it's better that it can go on any computer/device (i mean an emulator that can be plugged indifferently on computer with (or without!) TV/composite PAL- NTSC or VGA video output )
i think that the cheapest way is to use an 2 digits led displays, like this chinese floppy emulator: http://qhsfd.com/product.asp )
Here somes videos of my standalone version of my floppy emulator (the HxC Floppy Emulator), using an LCD display. (with fast loading )
http://fr.youtube.com/watch?v=0arlGguYEts (cpc atari st amiga)