cafe-alpha
Established Member
It seems I accidentally broke my ARP: I wanted to remove it from my Saturn, but I forgot to turn off it before.
As a consequence, the flash ROM can't be read normally : bytes at even address are filled with random values.
-> As an example, see the image here.
By luck, as "SEGA SEGASATURN " can't be read at the begining of the flash ROM, Saturn prevents ARP from booting. Hence, by using a CD-ROM based application, I could test the PC<->Saturn transfer, and it still works fine.
Also, I tried to reflash my ARP, but it didn't fixed the problem.
So here is my question: does anyone know which chip I should replace in the ARP when the following phenomenons occurs ?
- Bytes in the flash ROM can't be read/wrote on even address.
- PC <-> Saturn transfer still works normally.
Here is a list of the chips in my ARP:
- PALCE22V10H-25PC/4
- DM74LS245N
- ATF16V8B-25PC
- SN74HC157N (x2)
- GM71C17803CJ6 (x2)
- C010L (Flash ROM chip ??, x2)
As a consequence, the flash ROM can't be read normally : bytes at even address are filled with random values.
-> As an example, see the image here.
By luck, as "SEGA SEGASATURN " can't be read at the begining of the flash ROM, Saturn prevents ARP from booting. Hence, by using a CD-ROM based application, I could test the PC<->Saturn transfer, and it still works fine.
Also, I tried to reflash my ARP, but it didn't fixed the problem.
So here is my question: does anyone know which chip I should replace in the ARP when the following phenomenons occurs ?
- Bytes in the flash ROM can't be read/wrote on even address.
- PC <-> Saturn transfer still works normally.
Here is a list of the chips in my ARP:
- PALCE22V10H-25PC/4
- DM74LS245N
- ATF16V8B-25PC
- SN74HC157N (x2)
- GM71C17803CJ6 (x2)
- C010L (Flash ROM chip ??, x2)