GB A1000 Project - register

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Disclaimer

This is a disclaimer from Georg Braun, the developer of the new GB A1000 hardware.

Important!

A high level of expertise is required for construction and troubleshooting of the GB A1000 board. Successfully constructing the board without SMD soldering experience and in-depth knowledge of Amiga hardware will be a most difficult endeavor.

For this project, soldering tools and measuring technology is required! To get the board working, a CPLD and GAL chip programmer is necessary. To troubleshoot and eliminate soldering and component errors, an oscilloscope and a multimeter is required at the very least. To speed up troubleshooting, access to a 68 channel logic analyzer is recommended. Regarding Amiga custom chips, it is recommended that more than one of each chip is at hand to ensure functioning chips are used in the build.

The builder of the board is on his own! I (Georg Braun) does not offer any support for acquiring components, building the board, getting the board running, nor answering any questions regarding your project.

I am not supporting any bulk orders of the board! Bulk orders in different forums are not being supported by me. If you have questions regarding the board and the order, ask the person in charge of the order.

You are not automatically entitled to access the files for the project! I reserve the rights to modify or delete the project files at any time, regardless of whether referral to my homepage from bulk orders exist. The source code for the programmable logic components will not be made available, so don't even bother asking.

Commercial use of any of the project files without written authorization is forbidden!

Note:

I do not want to deal with frustrated people who participate in a bulk order because of a good price, especially when it results in nasty comments on the web. Completing the board requires about 20 to 30 hours of soldering including work on rosters with pin distances of 0.5 mm. The circuit is highly complex and involves many potential sources of error. Troubleshooting involves working with oscillators, drivers and custom chips bought as "new", which for one reason or another may not work properly. Soldering problems also occur, which happen to me too. Debugging can easily take several hours. On top of that, you will be working with a 4 layer PCB, which of course must be of suitable quality, including the size of the PCB, through-layer contacts and minimum measure. Also, a good free of debris adhesion of the copper layer is needed for the visa and IC-sockets etc. The solder mask must be resistant to solder running on to it and the PCB should not show any bends or twists. Some of the components used in this board are difficult to obtain or only obtainable from older Amiga hardware. This does not only concern the Amiga custom chips but also TTL-Gutter like for instance 74F245 which is no longer in trade in an SMD model. The project builder must know where to find these parts on his own.

- Georg Braun

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