Topic: Homebrew Chip - What Types Of Eprom/flashrom? (Read 153 times)

Blackout13 · « **Reply #15 on:** June 12, 2002, 11:21:00 AM »

I can verify that 27C020-70ns work fine.

Duece · « **Reply #16 on:** June 12, 2002, 01:47:00 PM »

BlueMnky · « **Reply #17 on:** June 12, 2002, 03:28:00 PM »

4NIC8TOR · « **Reply #18 on:** June 12, 2002, 03:47:00 PM »

bluemnky...I had a board that wouldn't detect the flash (athlon 700...VIA chipset) and I switched boards (PII 333 Intel chipset) and it worked.

Duece · « **Reply #19 on:** June 12, 2002, 03:53:00 PM »

If I downloaded a presplit image of the cracked bios do I still need a hex editor to split the file? I think I answered my own question, but I just want to be sure to eliminate probs once I open my xbox.

4NIC8TOR · « **Reply #20 on:** June 12, 2002, 04:13:00 PM »

undertoe · « **Reply #21 on:** June 12, 2002, 10:26:00 PM »

anyone try a 29EE020? same chip that is on the HK ps1 cheat carts?

Duece · « **Reply #22 on:** June 13, 2002, 07:33:00 AM »

Quote (4NIC8TOR @ Jun 12 2002, 05:13 PM)

No....if it's split you don't need to split it. Also, I have just tested the Macrovision and IT IS DISABLED with Xtender's 1.1 release!

cool deal 4nic8tor.....I will hopefully get to work on an old compaq soon....

Duece · « **Reply #23 on:** June 13, 2002, 07:45:00 AM »

MdRT · « **Reply #24 on:** June 13, 2002, 08:24:00 AM »

Here you go, this is a PLCC type Flash EEprom.
user posted image

4NIC8TOR · « **Reply #25 on:** June 13, 2002, 09:05:00 AM »

but that's a lot harder. I would suggest using a DIP style chip instead. I tried to post a picture but IMG code is off and so is HTML....how in the hell did you manage to post that image?

Duece · « **Reply #26 on:** June 13, 2002, 10:32:00 AM »

Upon Further inspection I found out that it is a Winbond 29c020-90. Again I still have yet to figure out what size it is....2mb,8mb and so on. I have the prespilt version of the xtender 1.1 bios. O well, I am off to do some more research. Any info would be appreciated!

Blackout13 · « **Reply #27 on:** June 13, 2002, 11:18:00 AM »

a 29c020-90 is a 2Mbit, 90ns chip.... an 040 is a 4Mbit, an 010 is a 1Mbit.

rrm321 · « **Reply #28 on:** June 13, 2002, 11:24:00 AM »

Duece · « **Reply #29 on:** June 13, 2002, 12:16:00 PM »

Quote (rrm321 @ Jun 13 2002, 12:24 PM)

Can a 29c020-90 be programmed using a PC Motherboard?

Yes it can. I am about to do it now. I have one final question. How can I tell beforehand if my chip has the Boot Block Protection enabled? I know that UNIFALSH can flash the chip, but it can't if the boot block protection is enabled.

Author Topic: Homebrew Chip - What Types Of Eprom/flashrom? (Read 153 times)