Flounder is a standalone single-board computer built around the Zilog Z180 processor.
It features:
- Clock speed up to 33 MHz (overclockable to 40+)
- 512 KB of both ROM and SRAM
- Two RS-232 serial ports
- 16 GPIO pins
- PS/2 keyboard interface
- Support for 40x4 character LCD display
- CH376S USB storage
An Altera EPM7064 (or EPM7128) 84-pin CPLD provides glue logic and additional interfacing options. An expansion header breaks out address, data, and control lines to support additional hardware development.
All software development is done in C with the z88dk toolkit. Programs are flashed to and run from the EEPROM.
A hardware monitor program gives access to basic memory and I/O operations including: peek, poke, and memdump.