7bit Sum Series User manual

SumA1200, SumA600, SumA234/CD32, SumCDTV
Sum USB adapter
USER GUIDE
Version 1.3 Firmware: v.20190501

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Table of contents
Installation –Amiga 1200........................................................................................................................ 3
Installation –Amiga 600.......................................................................................................................... 5
Installation –Amiga 2000/3000/4000/CD32 .......................................................................................... 7
Installation –Amiga CDTV ....................................................................................................................... 8
Mapping keys .......................................................................................................................................... 9
Configuration mode .............................................................................................................................. 10
Updating adapter’s firmware ................................................................................................................ 11

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Installation –Amiga 1200
The process of connecting the adapter should ALWAYS be performed with your Amiga being TURNED OFF.
Sum USB A1200 adapter has been designed for installation inside Amiga A1200 computer.
Therefore please remove your Amiga A1200 case and find the U7 chip using the following picture as a guide.
Next you should place Sum adapter’s socket on the U7 chip and push it gently in order to make it appropriately attached to the chip.
Below you can see how correctly installed adapter looks like.
Old version of adapter
New version of adapter
This is the U7 chip you
are looking for.

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The last step that you will need to make is connecting a USB cable to the port located on the adapter. The exact description of how to do
this is illustrated below.
WARNING!!!
One should pay special attention to connecting USB cable to your Sum adapter in a correct way. Incorrect installation may result in
serious damage to the adapter, your Amiga computer and/or the connected USB device
Correctly connected Sum adapter is ready to use.
Pin no. 1
Pin no. 1 is marked in red.
Pin no. 1

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Installation –Amiga 600
The process of connecting the adapter should ALWAYS be performed with your Amiga being TURNED OFF.
Sum A600 adapter has been designed for installation inside Amiga A600 computer.
Therefore please remove your Amiga A600 case and find the U7 chip using the following picture as a guide.
Next you should place Sum adapter’s socket on the U7 chip and push it gently in order to make it appropriately attached to the chip.
Below you can see how correctly installed adapter looks like.
The last step that you will need to make is connecting a USB cable to the port located on the adapter. The exact description of how to do
this is illustrated below.
This is the U7 chip you
are looking for.

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WARNING!!!
One should pay special attention to connecting USB cable to your Sum adapter in a correct way. Incorrect installation may result in
serious damage to the adapter, your Amiga computer and/or the connected USB device
Correctly connected Sum adapter is ready to use.
Pin no. 1 is marked in red.
Pin no. 1

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Installation –Amiga 2000/3000/4000/CD32
The process of connecting the adapter should ALWAYS be performed with your Amiga being TURNED OFF.
Sum A1234/CD32 adapter should be connected to the keyboard port of Amiga A4000 / CD32 computers.
In the case of Amiga A2000/A3000 models one should also use additional cable that comes with Sum A1234/CD.
Correctly connected Sum adapter is ready to use.

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Installation –Amiga CDTV
The process of connecting the adapter should ALWAYS be performed with your Amiga being TURNED OFF.
Sum CDTV adapter should be connected to the keyboard port of Amiga CDTV computers.
Correctly connected Sum adapter is ready to use.

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Mapping keys
Amiga keys
USB keyboard
Amiga Reset
CTRL + L-Win + R-Win
CTRL + L-Alt + R-Alt
CTRL + L-Alt + Del
Help
F12
L-Amiga
L-Win
R-Amiga
R-Win

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Configuration mode
In order to activate configuration mode one should first run any text editor. Then R-Shift + Pause key combination should be pressed
(when using a Mac keyboard equivalent R-Shift + F19 applies). If configuration mode is successfully enabled, the appropriate text message
appears.
This is the list of available key assignments:
F1 –reset type - software (A2000,A3000,A4000,CD32,CDTV) or hardware (A600,A1200),
F2 –R-Amiga to R-Alt remapping,
F10 –displaying key codes (on/off),
F12 –displaying the configuration.
Disabling configuration mode can be achieved by additional pressing of R-Shift + Pause key combination (R-Shift + F19 for Mac keyboards).
Appropriate text message confirms it.
WARNING!!!
If resetting your Amiga does not seem to have any effect –please check the reset type setting (F1 key).

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Updating adapter’s firmware
To update your adapter’s firmware software, you should first enable the Bootloader mode. In order to do this, please press
the button located on top of the device or on its case (with Bootloader label).
Below you can find the description of where the reset button and status light (LED) are located for a given Sum model.
Bootloader button and status LED location for SumA1200
Bootloader button and status LED location for SumA1200 (old version)
Bootloader
Status
Bootloader
Status

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Bootloader button and status LED location for SumA600
Bootloader button and status LED location for SumA234/CD32
Bootloader
Status
Status
Bootloader

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Bootloader button and status LED location for SumCDTV
When pressing and holding the Bootloader button, one should connect the device via USB A-A cable to the PC running Windows. After
being recognized by Windows OS, adapter switches into Bootloader mode which is confirmed with continuous pulsation of the Status LED.
The next required step is to launch on the connected Windows PC SumFlasher application that will update firmware of the adapter.
When application detects connected Sum adapter it will enable Open Hex File button. Firmware update procedure looks as follows:
One should press Open Hex File button and choose a file containing updated firmware image (which results in enabling
Programming and Reset Device buttons).
One should press Programming button and wait for the flashing process to complete.
After completion of the flashing process, one should press Reset Device button, which switches Sum back into normal operation
mode allowing its disconnecting from the PC.
Having followed the above procedure one can connect the adapter back to the Amiga.
All files required for the updating procedure can be downloaded from http://retro.7-bit.pl website.
Status
Bootloader

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