The "Foxy" CPU.

[Anven11]

awesome tutorial!
but is there any way i can use sin, cos and tan?
that would be really helpful

[Matte]

The functions for sin, cos and tan, are:

FSIN X,Y   | X = SIN Y
FCOS X,Y   | X = COS Y
FTAN X,Y   | X = TAN Y

Take a look here:
http://www.wiremod.com/forum/cpu-tut...mentation.html

[T_larson911]

hey Fox, i got a problem with the CPU, how come everytime i try to make a program, it dont work. I used the debugger tool and noticed that it showed error for output and error = 5.1-something. its makin me mad cuz i wanna learn how to use CPU.
can you please help?

[ryland]

hey Fox, i got a problem with the CPU, how come everytime i try to make a program, it dont work. I used the debugger tool and noticed that it showed error for output and error = 5.1-something. its makin me mad cuz i wanna learn how to use CPU.
can you please help?

Could you please show the code, some parts may be outdated.
Error 5.12 is a internal error or know as a syntax error.

[Spooky]

I don't understand how to wire a console screen too the cpu chip because the cpu has like one output which is error. Is there a another chip that i must use to get access to the cpu outputs?

[ryland]

I don't understand how to wire a console screen too the cpu chip because the cpu has like one output which is error. Is there a another chip that i must use to get access to the cpu outputs?

Well, if you are just using console screen, wire Membus from the CPU to the console screen, and it should work... Nothing else to wire.
But if you want to use address bus for the console screen, set it up like so....
Memory1:
Offset: 0
Size: 2048

And you would wire membus to the address bus instead, and wire memory1 to the console screen.

[Vinkel]

Please help me... Why won't this work!
For some reason the calculations gets stuck at "Start" even though eax is not equal to 0.
Port0-out = Screen
Port1-in = Keypad
Port2-in = The defined arithemetic

Start:
in eax,1
out 0,eax
cmp eax,0
  je Start
jmp Math

Math:
in ebx,2
cmp ebx,1
  je Add
cmp ebx,2
  je Sub
cmp ebx,3
  je Mul
cmp ebx,4
  je Div
jmp Math

Add:
in ebx,1
cmp ebx,0
  je Add
add eax,ebx
jmp End

Sub:
in ebx,1
cmp ebx,0
  je Sub
sub eax,ebx
jmp End

Mul:
in ebx,1
cmp ebx,0
  je Mul
mul eax,ebx
jmp End

Div:
in ebx,1
cmp ebx,0
  je Div
div eax,ebx
jmp End

End:
out 0,eax

[Drunkie]

Please help me... Why won't this work!
For some reason the calculations gets stuck at "Start" even though eax is not equal to 0.
Port0-out = Screen
Port1-in = Keypad
Port2-in = The defined arithemetic

Start:
in eax,1
out 0,eax
cmp eax,0
  je Start
jmp Math

Math:
in ebx,2
cmp ebx,1
  je Add
cmp ebx,2
  je Sub
cmp ebx,3
  je Mul
cmp ebx,4
  je Div
jmp Math

Add:
in ebx,1
cmp ebx,0
  je Add
add eax,ebx
jmp End

Sub:
in ebx,1
cmp ebx,0
  je Sub
sub eax,ebx
jmp End

Mul:
in ebx,1
cmp ebx,0
  je Mul
mul eax,ebx
jmp End

Div:
in ebx,1
cmp ebx,0
  je Div
div eax,ebx
jmp End

End:
out 0,eax

Try jumping to the Start label first.

cmp eax,0
 je Start

Start:
in eax,1
out 0,eax
jmp Math

[Evac]

Please help me... Why won't this work!
For some reason the calculations gets stuck at "Start" even though eax is not equal to 0.
Port0-out = Screen
Port1-in = Keypad
Port2-in = The defined arithemetic

Start:
in eax,1
out 0,eax
cmp eax,0
  je Start
jmp Math

Math:
in ebx,2
cmp ebx,1
  je Add
cmp ebx,2
  je Sub
cmp ebx,3
  je Mul
cmp ebx,4
  je Div
jmp Math

Add:
in ebx,1
cmp ebx,0
  je Add
add eax,ebx
jmp End

Sub:
in ebx,1
cmp ebx,0
  je Sub
sub eax,ebx
jmp End

Mul:
in ebx,1
cmp ebx,0
  je Mul
mul eax,ebx
jmp End

Div:
in ebx,1
cmp ebx,0
  je Div
div eax,ebx
jmp End

End:
out 0,eax

If what you mean by "stuck" is that the calculations stop working after the first cycle, it is because you've not made an infinite loop.
I also recommend that you cease using the

in x,y
----------------------
out x,y

And start using this instead:

mov portx,y
----------------------
mov x,porty

But that's maybe just me?

Oh, and by the way (Untested):

_main:
	mov eax,port1
	cmp eax,1
	jne _main
		je calc
	jmp _main
	
calc:
	mov eax,port2
	cmp eax,1
	je add
	cmp eax,2
	je sub
	jmp _main
	
add:
	mov eax,port3
	add eax,port4
	mov port0,eax
	jmp _main
	
sub:
	mov eax,port3
	sub eax,port4
	mov port0,eax
	jmp _main

Untested, and I doubt that's even what you're looking for.
Port 1 - Go
Port 2 - Arithmetic Operation (Add/Sub, add more on your own)
Port 3 - Par1
Port 4 - Par2

[Drunkie]

If what you mean by "stuck" is that the calculations stop working after the first cycle, it is because you've not made an infinite loop.

He doesn't need to have an infinite loop, it only needs to calculate it once.
The keypad he has that goes into port 1 should trigger it instead.