[help] MULTIMODE3, PIC 12C508A FOR PSX!

hi to all guys i'm ruben from italy! i've an old psx scph-7001. i would like to mod it with the best modchip. i've discovered that the best hex is MULTIMODE 3. i've a willem programmer v50b. it works very good. i've bought 3 12c508a but i don't be able to program them!! could you help me? ive tried with

willem eprom pcb50b program

click on blank check

"no command movlw xx (osccal) at address 0x1ff"

click ok and it says

DEVICE NOT BLANK!

load the hex file, program and at the end it says ""error writing program area"

i've tried with icprog

load the hex file, program and it says

"verify failed at address 000h!"


what can i do??? please help me!!! other questions


is anything better the multimode3?

do other mods exists for psx?

 

No i've mounted the chip directly on the programmator!

https://www.dropbox.com/s/qpprk26gstvou09/LINEcamera_share_2014-02-05-23-28-05.jpg

https://www.sivava.com/img-product/EPROM_Pro_05/350_Eprom-programmer-pcb50b.jpg

 

ok, so because i'm not capable to program this pic, i've resoldered the 12c508a that i've found in this psx. it were soldered with only 4 wires. the point of solder are the same of the multimode 3 so i've soldere the others 3 point. the console boot original and backup, but if i try to boot ntsc original games (winning eleven 4 and dino crisis) after the game boot, it show me an alert with some phrase all in japanese. what does it mean? maybe the code into this pic isn't mm3?

 

The 4 wire chip wasnt MM3, its old crow non stealth.

 

Also my friend in italy sended me some years ago a mayumi v4 on a 12f508 and word like a charm
So you can use 12F series that can be reflashable

 

could you suggest me any rewritable chip easy to find?

could you suggest me other mods that i can do ?

 

so i've ordered an 12f629 and flashed with a code from here

http://www.gatchan.net/2012/08/27/multimode-pour-12f629/

this is the installation: it doesn't work

https://www.dropbox.com/s/v0y4vwdfb3by5u9/DSC_0002.jpg


i've flashed it with Willem programmer. it asked me something about info on oscilletor: i'd like to respond yes or not?

 

please help me!

 

Try finding more install pics and check if they match what you have.
http://img.ebw.gr/img2/9093/PSX7000.JPG << One example with a different point 4, worth a try.

I really recommend buying a batch of 12f509 or 12f508a though, as I never had an issue with these,
the code for them and the install pics available.

 

Which Playstation version are you using, and waht's the problem when testing the chip ?