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)
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]
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.
Binary & Source Releases
|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|