Quote from: JosJuice on December 31, 2010, 05:15:36 pm

Quote from: Hot_Dog on December 31, 2010, 05:01:38 pm

Sorry if this was already answered, but do we know the speed and type of processor that the Prizm has?

SuperH 3, running at 29 MHz (speed can be increased).

How much can it be increased?  29 MHz is SO SLOW!

It can be increased up to 6 times the base frequency, which is 178 MHz (although the manufacturer claims it has a ceiling of 200 MHz). You do this by manipulating the frequency control register, which is a two byte register controlling the internal clock frequency ratio, the peripheral clock frequency ratio, and the frequency multiplier. Each of those attributes is given three bits and I'll designate them A_1,2,3, B_1,2,3, and C_1,2,3 respectively, where the lowest number signifies the most significant bit.

The register is arranged like this:

Bit	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Bit controlled	C1	A1	B1	-	-	-	-	-	-	-	C2	C3	A2	A3	B2	B3

EDIT: How do you add a table border?

The processor starts failing to read correctly from RAM. I'd assume that means you're going to crash something.

Or we could have it perform some counting function and record how long it takes. It'd be interesting to see what happens if you set the Frequency to 0x111b instead of the maximum of 0x101b.

Rebooting would reset it. The question is whether the calculator actually turns off when you turn it off or goes to sleep 

Yep, it does. I'd hope so, at least. The BRK command will turn the processor off until the next interrupt 

Quote from: Qwerty.55 on December 31, 2010, 03:37:53 pm

Quote from: z80man on December 31, 2010, 03:30:52 pm

Prizm

Code: [Select]

Cls
For 0 -> A To 1000
 Black "A
Next

Optimized for ya 

How do you set the increment to something other than +1? 
I'm guessing

Code: [Select]

For 1000 ->A To 0 Step -1Also I optimized the TI code to use output instead of disp and now the TI-84+ SE finished the loop while the Prizm(with optimized for loop) was only on 740. The while loop on the Prizm though is just barely slower than the for loop

So... are you saying that TI BASIC @ 15MHz is faster than the Casio BASIC @ 29MHz?

All of the sudden, I'm not very impressed...  but I will wait for more data.

Quote from: Hot_Dog on December 31, 2010, 05:17:30 pm

Quote from: JosJuice on December 31, 2010, 05:15:36 pm

Quote from: Hot_Dog on December 31, 2010, 05:01:38 pm

Sorry if this was already answered, but do we know the speed and type of processor that the Prizm has?

SuperH 3, running at 29 MHz (speed can be increased).

How much can it be increased?  29 MHz is SO SLOW!

It can be increased up to 6 times the base frequency, which is 178 MHz (although the manufacturer claims it has a ceiling of 200 MHz). You do this by manipulating the frequency control register, which is a two byte register controlling the internal clock frequency ratio, the peripheral clock frequency ratio, and the frequency multiplier. Each of those attributes is given three bits and I'll designate them A_1,2,3, B_1,2,3, and C_1,2,3 respectively, where the lowest number signifies the most significant bit.

<snip>

I've uploaded everything to the prizm wiki:

http://wiki.prizmwiki.co.cc/wiki/CPU_clocks

Quote from: z80man on December 31, 2010, 03:54:56 pm

Quote from: Qwerty.55 on December 31, 2010, 03:37:53 pm

Quote from: z80man on December 31, 2010, 03:30:52 pm

Prizm

Code: [Select]

Cls
For 0 -> A To 1000
 Black "A
Next

Optimized for ya 

How do you set the increment to something other than +1? 
I'm guessing

Code: [Select]

For 1000 ->A To 0 Step -1Also I optimized the TI code to use output instead of disp and now the TI-84+ SE finished the loop while the Prizm(with optimized for loop) was only on 740. The while loop on the Prizm though is just barely slower than the for loop

So... are you saying that TI BASIC @ 15MHz is faster than the Casio BASIC @ 29MHz?

All of the sudden, I'm not very impressed...  but I will wait for more data.

Sadly this is how slow Casio BASIC is. However, Locate is much faster than Output() and it has more functions than the Nspire, so I guess that's a start. I wish it was faster, though.

The processor starts failing to read correctly from RAM. I'd assume that means you're going to crash something.

Ok, but I am more curious at which speed the calc can continue functioning correctly.