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Old 21 June 2019, 10:34   #1202
Jeff_HxC2001
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Join Date: Sep 2008
Location: Paris / France
Posts: 615
Quote:
20 June 2019 : Firmware STM32 USB HxCFloppyEmulator v3.3.1.1a ( -> In the "WIP_Firmware" Folder and https://hxc2001.com/custom_fw/)

New major feature ! : On screen display support (OSD overlay)

The HxC firmware for Gotek now support the On Screen Display !
You can now select images and see the drive status on the machine's screen without any additional software or LCD/OLED !
No need to make holes in the machine case anymore .



You only need 2 wires and a resistor to connect the Gotek to the machine's video signals :
One wire is used for the CSYNC video signal (Composite Sync), the other wire for the red, green (prefered) or blue signal.

One resistor must be put in serie on the color signal between the Gotek and the machine.
You can use a value between 220 and 470 ohms for this resistor. A potentiometer can be also used to tune the OSD brightness/contrast.

This was currently tested on Amiga 500, Atari STE and Amstrad CPC 6128 machines, but should work with any machines having a composite sync signal.

HxC Firmware for Gotek OSD wiring

:arrow: Gotek wiring :



(High resolution : https://hxc2001.com/download/floppy_...ek_OSD_Mod.jpg)

:arrow: Amiga 500 :

OSD Video out : Gotek U8 Pin 5 (PB15) -> 220 / 470 ohms resistor (or a 1k ohms potentiometer) -> Amiga 500 Ferrite bead E432 (see picture).
OSD Video CSYNC in : Amiga 500 U41 Pin 8 -> Gotek "JTCK-SWCLK" pin (PA14) (near the serial tx programming pin, please see picture).



(High resolution : https://hxc2001.com/download/floppy_...00_OSD_Mod.jpg)

:arrow: Amstrad CPC6128 :

OSD Video out : Gotek U8 Pin 5 (PB15) -> 220 / 470 ohms resistor (or a 1k ohms potentiometer) -> CPC6128 R128 (see picture).
OSD Video CSYNC in : CPC6128 IC116 Pin 5 -> Gotek "JTCK-SWCLK" pin (PA14) (near the serial tx programming pin, please see picture).



(High resolution : https://hxc2001.com/download/floppy_...28_OSD_Mod.jpg)

:arrow: Atari STE :

OSD Video out : Gotek U8 Pin 5 (PB15) -> 220 / 470 ohms resistor (or a 1k ohms potentiometer) -> Atari STE R420 (see picture).
OSD Video CSYNC in : Atari STE R475 -> Gotek "JTCK-SWCLK" pin (PA14) (near the serial tx programming pin, please see picture).



(High resolution : https://hxc2001.com/download/floppy_...TE_OSD_Mod.jpg)
HXCFEUSB_HFE_beta_firmware.zip

USB_HFE_hxc_floppy_emulator_firmware_release_notes.txt
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