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==== Table of Contents ====

[[#generic_una|Generic UNA]]

[[#custom_console|Custom Console]]

[[#binary_source_releases|Binary & Source Releases]]

===== Generic UNA =====

UNA is a BIOS for the Z80/Z180 Single Board Computers including SBCv1, SBCv2, Zeta2, MarkIV. There are hooks for N8/2312 and CPU280, but these boards are for the future.

The binaries may be burned to 128K or 512K EPROM or Flash (recommended) chips. A 1024K version may be burned to EPROM.

When the version number changes, or a full initialization is requested, UNA will search for a console device in the following order: VGA3 > PropIOv2 > UART. The UART used will be the default serial device on the particular CPU board.

Note: VGA3 support is added in version 3.0, currently in alpha testing. (24-Jul-2017)

===== Custom Console =====

<code code>
 The console search may be limited to a single device if you cannot stand this 10 second delay.  Use BUILD.BAT (on DOS/Windows) to create a BIOS binary for a specific console.
</code>

Specific console versions are named: UNA-UART.BIN, UNA-PROP.BIN, UNA-CVDU.BIN. They are built from UNA-BIOS.HEX by changing one byte in the file.

[please note: CVDU support is not yet available, but will be]

BIOS updates

If you use Flash ROM, BIOS updates may be done by copying the UNA-????.BIN file to the top-level directory on a CF or SD card. Starting with UNA snapshot #93, UNA can read disk unit 0 and update the Flash chip.

Currently, AMD and SST (Microchip) flash memory is supported. Flashing Atmel chips is coming.

06-Jun-2014

===== Binary & Source Releases =====

UNA 2.1 supports Serial Console and PropellorI/O (VGA).

UNA 3.0 beta supports Serial Console, PropellorI/O, CVDU, and VGA3. This is the last supported version of the BIOS. (8/2017).

Filename

Filesize
Last modified
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una-3.0-47beta-binary.zip|una-3.0-47beta-binary.zip]]
804.0 KiB
2017/08/06 14:45
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una-3.0-47beta-source.tgz|una-3.0-47beta-source.tgz]]
281.2 KiB
2017/08/06 14:46
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una043b.zip|una043b.zip]]
645.6 KiB
2015/10/31 18:44
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una043s.zip|una043s.zip]]
390.5 KiB
2015/10/31 18:44
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una_2.1-binary.tgz|una_2.1-binary.tgz]]
613.8 KiB
2017/02/17 17:29
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una_2.1-binary.zip|una_2.1-binary.zip]]
614.1 KiB
2017/02/17 17:29
[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:una:binaries:una_2.1-source.tgz|una_2.1-source.tgz]]
1.2 MiB
2017/02/17 17:29