[Coco] 7 chip 6809 computer

[embsys dev]

http://opencores.org/project,system09

6809 System On a Chip that emulates the SWTPc 6809. Project page with
revision history can be found at
http://members.optusnet.com.au/jekent/system09 . Runs Flex9 which can be
found at the Flex Users Group .

Features
- 6809 instruction compatible
- 6850 compatible ACIA/UART (57.6 KBaud)
- Hardware Trap Logic
- Dual 8 bit I/O port
- Simple timer
- 80 x 25 character Video Display with colour attributes
- Compact Flash interface
- PS/2 Keyboard Interface
- SYS09BUG Monitor ROM with Video driver
- Dynamic Address Translation supports up to 1Mbyte of RAM
- Fits in 300KGate Spartan IIe
- Uses Xilinx Block RAM for monitor ROM and VDU memory.
- Optional NOICE ROMs