Table of Contents
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
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.
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 |
|---|---|---|
| una-3.0-47beta-binary.zip | 804.0 KiB | 2017/08/06 14:45 |
| una-3.0-47beta-source.tgz | 281.2 KiB | 2017/08/06 14:46 |
| una043b.zip | 645.6 KiB | 2015/10/31 18:44 |
| una043s.zip | 390.5 KiB | 2015/10/31 18:44 |
| una_2.1-binary.tgz | 613.8 KiB | 2017/02/17 17:29 |
| una_2.1-binary.zip | 614.1 KiB | 2017/02/17 17:29 |
| una_2.1-source.tgz | 1.2 MiB | 2017/02/17 17:29 |
