5 replies to this topic

[ady]

I'm trying to understand how a ROM can be exchanged to a PC, I wondered if it was an easy task...such a thing as a simple USB socket to a device - end of story - or there was a lot more involved.

Been reading THIS , I beleve it was posted somewhere and i'm wondering if I am reading the right stuff basically!

Cheers for any advice.

[Geddy]

What's a ROM reader?

A thing for reading roms.

(Put your rom in the thingy, sends the data to your PC, save... a rom on your PC etc.)

[ady]

thought so cheers Trouty! :wink:


Now is this the right thing i'm reading?

[virtualhedgehog]

A ROM reader it is just an interface to a ROM chip. Pin connections are the same as the connection used on the game board. For a ROM chip there are no difference that is hooked on a board or on a reader. A ROM reader it is connected to a PC via a standard interface, usualy the serial interface. The reader put address on the address bus and the ROM put selected byte cell to the data bus. Data bytes are then forwarded to the PC.

[nails]

i think ive mentioned this before, but a while back i tried to decode a chip for `the crystal maze` for purposes of recoding the source to what ever i wished, mostly to program messages from the the artist/fruit-emu. but it seems the program on the chip is coded, and not decoded untill it hits the motherboard.

[virtualhedgehog]

Of course not. Microcontrollers can have hadware module for decyption. In this case the ROM code is decrypted at runtime and after that is executed by CPU.