zxq5
3afeafc9d4
- basic pointers and reading values from pointers works - writing to pointers not yet implemented (looks painful so a problem for tomorrow) - updated print library. the compiler has this hardcoded in all programs for now
45 lines
722 B
Plaintext
45 lines
722 B
Plaintext
include fib: "./lib/maths/fib.dsa"
|
|
include maths: "./lib/maths/core.dsa"
|
|
include print: "./lib/io/print.dsa"
|
|
|
|
dw idt: 0xFFFF0000
|
|
dw stack: 0x10000
|
|
init:
|
|
// setup interrupt handlers
|
|
ldw idt, idr
|
|
lwi handle_hard_fault, rg0
|
|
stw rg0, idr, 4
|
|
// set up a stack.
|
|
ldw stack, bpr
|
|
mov bpr, spr
|
|
|
|
dw string: "hello world"
|
|
start:
|
|
lwi 100, rg0
|
|
lwi 10, rg1
|
|
|
|
push rg1
|
|
push rg0
|
|
call maths::new_divide
|
|
pop rg0
|
|
pop rg1
|
|
hlt
|
|
|
|
pop rg0
|
|
pop zero
|
|
push rg0
|
|
call print::print_num
|
|
pop zero
|
|
|
|
hlt
|
|
|
|
// fault handler in case we fail DSA.
|
|
dw hard_fault_err: "FATAL: Illegal Instruction or Memory Access!"
|
|
handle_hard_fault:
|
|
call print::clear
|
|
call print::reset
|
|
lwi hard_fault_err, rg0
|
|
push rg0
|
|
call print::print
|
|
pop zero
|
|
hlt |