Global Variables vs. Pointers in Embedded Design

I've written a few 8bit embedded systems and the codebase I inherited and have expanded is basically 80% global variables (extern volatile), and than non-global control flags and logic variables as needed...
Global Variables vs. Pointers in Embedded Design

I've written a few 8bit embedded systems and the codebase I inherited and have expanded is basically 80% global variables (extern volatile), and than non-global control flags and logic variables as needed...
Do you know any good online books about (embedded) hardware design?

Hello, If you do, could you mail me a link? Thanks in advance Tamir
Do you know any good online books about (embedded) hardware design?

Hello, If you do, could you mail me a link? Thanks in advance Tamir
simple design verilog code

I have designed a easy arm core with verilog,but I want to learn more knowledge about how to design an arm pipeline core.Can you give me some advice which book I can read to design a more complex core...