Doom9's Forum - View Single Post - Philips DVP642 / DVP630

Jefferson Ryan · 7th March 2005, 03:45

I compared two CPU boards of each "M" and "S" versions (four players in total) and found the following:

Board "S"
4Mbit RAM:Elpida EDS6416AHTA (S6416AHTA-6B-E)
Servo Driver: AMTEK AM5868S
Flash:MX26LV800BTC-55
Vibratto: ES6698F G254 and ESS ES6603S
HC374

Board "M"
4Mbit RAM:SAMSUNG K4S64132H-75 (641632H-TC75)
Servo Driver: AMTEK AM5868S
Flash:MX26LV800BTC-55
Vibratto: ES6698F F164 (or F074) and ESS ES6603S
HC374

As you can see, the only differences are in the RAM used and in that number in the main chip. I compared all the major chips in the boards. I don´t believe that a difference in a simple chip as a RAM could cause a firmware revision, so what´s the difference between the G254 and the F074/F164 Vibratto II CPUs?

I´m also suspecting of a possible difference in the loaders, because there IS a difference in the noise in some units, but I´m not sure.

--Edit: I edited the Vibratto chips that I marked incorrectly, sorry!

7th March 2005, 03:45	#4 \| Link
Jefferson Ryan Registered User Join Date: Feb 2005 Location: Brasil Posts: 12	I compared two CPU boards of each "M" and "S" versions (four players in total) and found the following: Board "S" 4Mbit RAM:Elpida EDS6416AHTA (S6416AHTA-6B-E) Servo Driver: AMTEK AM5868S Flash:MX26LV800BTC-55 Vibratto: ES6698F G254 and ESS ES6603S HC374 Board "M" 4Mbit RAM:SAMSUNG K4S64132H-75 (641632H-TC75) Servo Driver: AMTEK AM5868S Flash:MX26LV800BTC-55 Vibratto: ES6698F F164 (or F074) and ESS ES6603S HC374 As you can see, the only differences are in the RAM used and in that number in the main chip. I compared all the major chips in the boards. I don´t believe that a difference in a simple chip as a RAM could cause a firmware revision, so what´s the difference between the G254 and the F074/F164 Vibratto II CPUs? I´m also suspecting of a possible difference in the loaders, because there IS a difference in the noise in some units, but I´m not sure. --Edit: I edited the Vibratto chips that I marked incorrectly, sorry! Last edited by Jefferson Ryan; 7th March 2005 at 06:58.