Document basics of a4091 tool

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Torsten Kurbad 2023-11-20 10:17:51 +01:00
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commit d6e0f19d04

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The device driver is based off the NetBSD NCR53c710 driver and has been adapted
to AmigaOS.
### Boot Menu
### Boot menu
The ROM contains a diagnostic menu that you can reach by holding down the right
mouse button during boot. The menu can show you dip switch settings and also
attached SCSI devices. There is also an option in the menu to enable or
disable CD-ROM boot.
### a4091 tool
The `a4091` tool can be used to probe the board and detect possible hardware
issues.
`a4091 -t` runs all tests once. If the A4091 is functioning properly, every test will pass.
`a4091 -t -L` will run all tests in a continuous loop while counting passes. If you built a board yourself, doing at least 500 passes is recommended. You can skip to individual test(s) by appending one or more numbers between `0` and `8` to `-t`, e.g., `a4091 -t56` will only run tests number 5 and 6. **Note:** If you skip **failing** tests, consecutive tests may produce unexpected results.
### Source files
Files will be documented here in an order to help understand code flow.