Start
• XS40
Board •
A
System-On-A-Chip•
Decisions,Decisions
•
Bus
Controls •
Bus
Interface
• External
I/O Interface? •
MEMCTRL
Design •
Paralell
Port I/O
• Video
Controller •
System
Bring-Up•
Series
Wrap-Up •
Software
and PDF
The
xr16 RISC processor is designed, now it’s time
to design the rest of the System-on-a-Chip (SoC).
Besides the CPU, the FPGA hosts an on-chip bus, bus
controller, parallel port, RAM, video controller,
and an external SRAM controller.
This
month, I’ll show how simple interfaces can make
SoC design as straightforward as classic CPU, glue
logic, memory, peripherals, and PCB design used to
be.
|
|
Photo 1—Here’s the xs40
board, with the project design loaded into
the FPGA
and running a demo program that’s drawing
graphics on the monitor. |
