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View Full Version : For Sale New USB keyboard adapter - Sum (Catfish) USB adapter



RetroAmi.com.pl
18th August 2015, 10:23
Hello Amibayers :)

Today we would like to annouce that we start to sell new USB keyboard adapter.

Sum adapter enables connecting USB HID keyboards to your Amiga. It has been designed for installation inside A1200’s 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’s installation procedure consists of simply attaching it the U7 chip located on A1200’s 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 + Pause keys. User preferences are saved to the built-in EEPROM memory – thanks to which when you reconnect the device – it is already configured!

Price: 126,99 PLN (about 30€). Direct link to our web store. (http://retroami.com.pl/index.php?id_product=163&controller=product&id_lang=1)

Warranty 24 months.

9282092821

Features of Sum (A1200 - internal version)



support for both USB HID and USB-PS/2 keyboards,
A1200 compatibility (U7 chip-attached),
built-in USB stack,
configuration mode (activated by R-Shift + Pause key combination),
built-in EEPROM memory enabling user preferences storage,
„Bootloader” function allowing future firmware upgrades,
„Status” indicator LED providing information about device’s state,
built around 16-bit Microchip microcontroller utilizing nanoWatt technology,
non-blocking keyboard A1200


Suported devices



Logitech K230
Logitech Deluxe 250 Keyboard (Y-UT76)
Logitech K120
Logitech Compact Keyboard K300
Dell KB212-PL
Dell KB212-B
Dell KB1421
Dell SK8115
HP KU-0316
Microsoft KU-0459
ZALMAN ZM-K500
KB8118

Xanxi
19th August 2015, 18:08
Awesome! Does it allow 3 fingers reset combo? If yes, i would be interested in one immediatly.
Would it also be compatible with the A4000?

Is the list of compatible keayboards limitative?

Rodpulsar
19th August 2015, 18:32
Reset combo does work perfectly :)

A sidenote too : the U7 component is NOT the one used by the LYRA (for example) ;)

RetroAmi.com.pl
28th November 2015, 20:59
From today we started to sale SUM keyboard adapter for Amiga 600.

http://retroami.com.pl/index.php?id_product=164&controller=product&id_lang=1

Drag0nFly
25th October 2017, 13:19
@RetroAmi.com.pl: Sorry to dig up an old thread, but I was wondering whether there are any plans to release a version of your Sum/Catfish A1200 adapter which connects to U13 (keyboard MPU) as opposed to U7 (CIA-A); similar to the above-mentioned Lyra?

This would be _especially_ useful for Amibayers who have had their A1200 mobos recapped and socketed (using a popular service offered here); and thus have both CIA chips sitting in sockets. I for one would be willing to pay extra for such an adapter, as the only other choice would be to replace the motherboard.

ajk
25th October 2017, 13:42
@Drag0nFly

Well it's not quite the only choice - you can un-socket and solder the CIA directly to the motherboard for this purpose.

Drag0nFly
25th October 2017, 13:55
Not something I can do, I'm afraid. It'll have to be done professionally, which I suppose would cost the same as a new mobo. Naturally, had I known that most of these adapters fit on the CIA chip I would not have done it in the first place. For some reason I was certain they hooked up to U13.

BLTCON0
25th October 2017, 13:58
@RetroAmi.com.pl: Sorry to dig up an old thread, but I was wondering whether there are any plans to release a version of your Sum/Catfish A1200 adapter which connects to U13 (keyboard MPU) as opposed to U7 (CIA-A); similar to the above-mentioned Lyra?

This would be _especially_ useful for Amibayers who have had their A1200 mobos recapped and socketed (using a popular service offered here); and thus have both CIA chips sitting in sockets. I for one would be willing to pay extra for such an adapter, as the only other choice would be to replace the motherboard.

Since it clips onto the CIA chip, only 4-5 pins are actually wired through (keyboard clock, keyboard data, +5V, ground and maybe the reset line, you get the idea).
So you can desolder the clip-on PLCC socket from the adapter and run the corresponding wires to your A1200 CIA socket, carefully soldering the wire tips on the corresponding CIA pins.
Actually this only needs be done for Keyboard Clock and Keyboard Data, as +5V, GND and Reset can be found elsewhere on the motherboard.
Actually #2, you could search for vias connecting to those pins and solder the wire tips there, avoiding the delicacy of pin-soldering.

Drag0nFly
25th October 2017, 14:14
@BLTCON0; Thanks for the tip - I leave it as a last-resort. I spent a fortune on the board (three times its worth), so I would not dare to try even the most basic soldering on it. (The most I've done is to desolder a battery on my A-501)

I guess I was hoping that there would be a successor to the Lyra (which was PS/2 only) that offered USB. Naturally, I can check how much desoldering and resoldering will actually cost, but like to avoid it if at all possible...

ajk
25th October 2017, 14:17
There are lots of people who can do it for a reasonable fee, but of course there are the costs of shipping a board back and forth to consider also.

Drag0nFly
25th October 2017, 14:44
Sure, the main issue is the extra hassle, shipping-cost + potential for shipping damage and if it gets lost in transit. I would hate to do this only to discover that there was an option to use the keyboard MPU on U13 instead in the near future. I am probably too optimistic though, and there might be good reasons why the CIA chip is used instead of U13 wrt. having a functional reset and allowing both the internal kbd and the external one to be used at the same time, etc.

But I guess I should not be the only one on here who is in this situation, as the premium recap service is somewhat popular.

The only USB-adapters I know of are the ones from RetroAmi.pl and another vendor (also based in Poland). I've contacted them so hopefully I'll know for certain if this is an option or not. Otherwise might have to bite the bullet, as it were..

BLTCON0
25th October 2017, 15:11
@BLTCON0; Thanks for the tip - I leave it as a last-resort. I spent a fortune on the board (three times its worth), so I would not dare to try even the most basic soldering on it. (The most I've done is to desolder a battery on my A-501)

Well, another option would be not to solder the wire tips on the CIA pins but squeeze them (after extensively flattening them) betweem the corresponding CIA pins and their PLCC socket counterparts. But I've never used this trick to provide any input on how easy/foolproof it is or how firm and secure the end result is.




I guess I was hoping that there would be a successor to the Lyra (which was PS/2 only) that offered USB. Naturally, I can check how much desoldering and resoldering will actually cost, but like to avoid it if at all possible...


The only advantage of the MPU chip is it also provides the pins for the row/columns of the keyboard matrix.
So, if a PS/2 or USB keyboard adapter simply regenerates the row/column events in an Amiga-compliant way, then if must necessarily either clip onto the MPU or plug into the keyboard connector (where all the row/column signals are also found, of course). Then the MPU will do its job and re-convert the row/column events into an Amiga-specific data stream, which is then fed into the CIA chip via the clock and data lines (and eventually the CPU reads the keycodes off the CIA's registers).


If, on the other hand, the adapter directly produces an Amiga-compliant data stream, then it can be clipped-on either on the MPU (which is now simply used as a carrier to pass through the clock and data lines) or on the CIA - the CIA placement has the advantage it doesn't interfere with the IDE cradle or maybe a scandoubler on top of LISA.


Now, I understand the MPU chip has been left soldered on your motherboard, without a PLCC socket, so all I said about wiring the clock and data lines directly onto the socketed CIA (or suitable vias) can be done all the same on the clock and data lines of the MPU chip. That's far safer and easier as the lack of a socket provides ample room to solder on the pins :-)