SUM 1200 USB Keyboard Adapter for A1200

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Sum 1200 USB Keyboard Adapter
Sum adapter enables connecting USB HID keyboards to your Amiga. It has been designed for installation inside the Commodore Amiga 1200 casing. Sum is based upon 16-bit Microchip microcontroller.
Sum provides built-in USB stack which enables USB HID keyboards support without the need for installing additional AmigaOS software drivers. Device installation procedure consists of simply attaching it the U7 chip located on the Amiga 1200 motherboard.
Additional feature of the adapter is its Bootloader function allowing future firmware upgrades.
Sum comes with dedicated configuration mode, which becomes available when one presses simultaneusly R-Shift and Pause keys. User preferences are saved to the built in EEPROM memory. Thanks to which when you reconnect the device, it is already configured!

Features of Sum (Amiga 1200 - internal version)
support for both USB HID and USB-PS/2 keyboards,
Commodore Amiga 1200 compatibility (U7 chip-attached),
built-in USB stack,
configuration mode for PC keyboard (activated by Right Shift and Pause key combination),
configuration mode for Mac keyboard (activated by Right Shift and F19 key combination)
built in EEPROM memory enabling user preferences storage,
Bootloader function allowing future firmware upgrades,
Status indicator LED providing information about devices state,
built around 16 bit Microchip microcontroller utilizing nanoWatt technology,
non blocking keyboard A1200