tjarker/rvcore

A Risc-V implementation in Chisel

rvcore's Issues

Clean up the pipeline implementation

Implement Pixel based VGA controller

Implement a VGA controller that can manipulate the display pixel wise.

• what interface?
• which level of abstraction?

Implement keyboard controller

A memory mapped keyboard controller has to be implemented.

• needs to output ascii to memory address
• needs buffering
• needs to detect modifier keys and change ascii character accordingly
• how much state should it include? (i.e. caps)

Implement Interrupt functionality

The microprocessor should support simple interrupts.

To be researched and decided:

• Single interrupt line?
• How to define ISR address?
• How to identify cause for interrupt?
  • register accessible by instructions? (like scause in riscv spec)
  • memory mapped?

Implement character based VGA controller

Implement a memory mapped controller that can display characters via VGA on a display.

Define a simple interface where a (x,y) and character can be passed to the controller via a memory address.