FF OSD Adapter - Rev 2

FF OSD Adapter - Rev 2

This adapter allows a FF OSD Blue Pill to be easily connected to a Gotek and a supported Amiga RGBtoHDMI adapter.

keirf's FF OSD: https://github.com/keirf/FF_OSD

Supported RGBtoHDMI boards: https://github.com/solarmon/RGBtoHDMI

Rev 2

Improvements in Rev 2 include:

• Added support for 3 x button signals from RGBtoHDMI board, to allow for keyboard integration.
  • Note: This requires a custom build for custom hotkeys to be mapped to the button signals - see https://github.com/solarmon/FF_OSD

Top:

Bottom:

Schematics PDF: https://github.com/solarmon/FlashFloppy/blob/main/FF%20OSD%20Adapter%20-%20Rev%202/FF%20OSD%20Adapter%20-%20Rev%202.pdf

FF OSD Firmware

In order to support keyboard integration for the RGBtoHDMI menu buttons , FF OSD needs to be built with support for it. I have forked off the FF OSD files and have provided the example config required to build it with RGBtoHDMI button support - see:

https://github.com/solarmon/FF_OSD

The only change is to add the button code to src/default_config.c:

#if 1
    /* An example for RGBtoHDMI momentary buttons */
    .user_pin_opendrain = U(2) | U(1) | U(0),	/* Set these pins as open drain */
    .user_pin_pushpull  = 0,					/* No buttons as pushpull */
	.user_pin_high		= U(2) | U(1) | U(0),	/* Initialise then as HIGH */

    .hotkey = {
        [F(1)]  = { .str = "RGBtoHDMI\0Button 1",	/* Test OSD text */
                    .pin_mod  = U(0), 
					.flags = HKF_momentary, },
        [F(2)]  = { .str = "RGBtoHDMI\0Button 2",	/* Test OSD text */
                    .pin_mod  = U(1), 
					.flags = HKF_momentary, },
		[F(3)]  = { .str = "RGBtoHDMI\0Button 3",	/* Test OSD text */
                    .pin_mod  = U(2), 
					.flags = HKF_momentary, },
    }
#endif

So you can take the original and latest source code from https://github.com/keirf/flashfloppy-osd and update src/default_config.c to include this three button mapping, and build the Blue Pill firmware yourself (see https://github.com/keirf/flashfloppy-osd/wiki/Building-From-Source)

Installation and Connectivity

Here is an example summary installation connectivity with a supported RGBtoHDMI board and Gotek.

For dual output of FF OSD on Amiga RGB and RGBtoHDMI HDMI, use the FF OSD menu to set the option Display Enable to A15 and to set A15 to Active Low.