Documentation

Rossum SP-1200 Reissue Main Firmware Version 1.04

(http://download.rossum-electro.com/sp/SP1200fw_1_04_240507.zip)

Main Firmware version 1.04 includes bug fixes and is recommended for all users.

1.04 includes a fix for a bug caused by truncating the beginning of sounds which used to be able to make otherwise-empty sounds produce clicks or other noises.

1.04 also includes a fix for an obscure bug that could interfere with the RGB display backlight settings when buttons were accidentally pressed while the truncation function was active.

We here extend our deepest thanks to the users that were able to help us reproduce and hunt down these bugs which ultimately led us to their solutions.

To install the main firmware update, delete and SP firmware .bin files on the card, then unzip the download and copy the file "sp1200fw.bin" into the root folder (directory) of the memory card.

Activate the Setup module and key in 23 for Special Functions followed by 28 (Update Software).

With the memory card inserted in the SP-1200 unit, press Enter at the prompt. After the software has been updated, the unit will prompt the user to cycle power.

Firmware versions 1.02 and newer allows users to optionally disable the filter envelopes without modifying any hardware on the SP-1200, while preserving the instrument's full operating capabilities and sonic character.

When the SP-1200 is powered on and no buttons are held, all of the SP-1200's features work as originally designed, preserving the original sound. This includes authentically producing the original dynamic filter envelopes on channels 1 and 2.

When the SP-1200 is powered on while the TUNE/MIX/MULTI button is held, the filter envelopes are disabled. The SP-1200 will display the message "Filter Envs Off" during start-up. This alternative operation mode is not necessarily recommended to musicians seeking the SP-1200's legendary sonic character.

The SP-1200 reissue is a faithful recreation of this vintage instrument, using the same Z-80 processor and memory map as the original. This means that there is virtually no space for feature enhancements, changes, or options. Fortunately, in this particular case, the filter envelopes could be disabled by changing only a few bytes of code.

If the SP-1200 reissue unit is able to start with the filter envelopes disabled by powering it on while the TUNE/MIX/MULTI button is held, its EEPROM firmware is up to date and does not need to be updated. (Special Edition (SE) SP-1200 units likewise do not require an EEPROM update.) Please do NOT attempt an SP-1200 EEPROM update unnecessarily. (The update is not necessary if the filters can already be optionally disabled.)

Some SP-1200 units might require the EEPROM update in order to optionally disable the filter envelopes on startup (by powering it on while the TUNE/MIX/MULTI button is held).

SP-1200 EEPROM Update (Not Required For Most Units)

(http://download.rossum-electro.com/sp/sp1200eefw_240507.zip)

To install the EEPROM update, unzip the download and copy the files "sp1200fw.bin" and "sp1200eefw.bin" into the root folder (directory) of the memory card. Activate the Setup module and key in 23 for Special Functions followed by 28 (Update Software).

With the memory card inserted in the SP-1200 unit, press Enter at the prompt. After the software has been updated, the unit will prompt the user to cycle power. After the software update, power off the SP-1200 and power it back on with the Sync button held. Press Yes, Enter, and then Yes at the prompts. The SP-1200 will display a prompt to "Cycle Power." Power off the SP-1200 and power it back on.

If the update was successful, the firmware revision will be listed at the end of the list of Special Functions accessed by pressing Setup and keying in 23. Users can use Slider 1 to scroll to the end of the list of Special Functions where Main FW Rev 1.02 will be displayed. "Main FW Rev 1.02" will also be displayed briefly when powering on the SP-1200 unit.

[Main firmware update 1.01 corrected an issue in which the message "Select a File" would be incorrectly displayed as "Read Error 43".]

SP-1200 Reissue QuickStart Guide (PDF)

SP-1200 Manual (PDF)

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Assimil8or Manual (PDF)

Assimil8or 2.0 Software New Features Guide (PDF)

Assimil8or Knob Template (PDF)

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Control Forge Owners Manual (PDF)

Control Forge Knob Template (PDF)