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[omaemad]

Hey my datel pro action replay has been crashed for like 3 years now...

back then they said using two datels carts on each other would flash the eeprom of the bad hex code and it would work(they crash if wrong code is entered)

... i only have one and now there isnt much info on action replys/ game sharks 4 the n64

so since it is Electrically erasable rom is there a way to solder a battery or something to a certain pin to empty it?

just need to know if it is possible to erase it via a battery

[cory1492]

Probably not, if its an EEPROM chip you will need to program the EEPROM with an EEPROM programmer.

I'd need to know the EEPROM chip manufacturer and serial number to tell you more though.

[omaemad]

well  i read a bit more and they say that it also invloves upgrading the bios via parllel port to fix it


the only tool that can do this is the official game shark pc utlity which i cant find

every one links to the same website which is now down  :cry:

if any one know any active gs sites please inform me

[omaemad]

never mind i managed to find it as an attachment in the deep bowels of a very old post in an gaming forum

[SAV2880]

DO share the good results so we can all know.

[omaemad]

NOOOOOOO :cry:

well i still need another working one even with pc link ( didnt read carefully the guide)

well this is where all the techy ppl come in
if i was able to findout what each ic does and it how it works would be i able to flash it with a rom (i found the action replay rom)?

i hope i can flash it in the same way ppl flash bricked super cards

here are the ic's



i have got access to a solder iron and solder  (got a whole reel)
and lots of copper audio cable in case i need to make a pc->ic link

[omaemad]

I found a couple of IC directories but they request 1 id number but here each IC has 2 number codes

can some one help me understand which ones to use

I mean how did they find which pins on the ds's ic that are needed for it to be flashed?

[dabone]

Ok, the first 2 are eeproms.
(What you need to reprogram)


http://www.mcu-memory.com/datasheet/sst/29xe010.pdf


The second is a hc374 chip. (The first line a date code (year 96 week 13)
The MM74HC374 high speed Octal D-Type Flip-Flops utilize advanced silicon-gate CMOS technology. They possess the high noise immunity and low power consumption of standard CMOS integrated circuits, as well as the ability to drive 15 LS-TTL loads. Due to the large output drive capability and the 3-STATE feature, these devices are ideally suited for interfacing with bus lines in a bus organized system.

These devices are positive edge triggered flip-flops. Data at the D inputs, meeting the setup and hold time requirements, are transferred to the Q outputs on positive going transitions of the CLOCK (CK) input. When a high logic level is applied to the OUTPUT CONTROL (OC) input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.

The 74HC logic family is speed, function, and pinout compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground.


So it's just part of the logic, no data storage.


Later,
dabone