Amiga ROM (no please dont flame me *hides* )

[locutus]

Hello, i wanted to ask what kind of ROM's are used in the A3000/4000/1200, i wanted to experiment with writing my own ROM's for the Amiga etc. , but to do that i would need to know what kind of ROM's it are.

*hopes not to get flamed*

[seer]

You mean Kickstart Rom ? I had 3.0/3.1 in my A4000, and 1.3 in my A500..

Not sure why you think you'll get flamed for writing your own rom ?  :-?

[JurassicCamper]

I think he is asking what type of roms are used.
EG:
PLCC 32 4 meg ROM
So he can replace the Amigas ROMS with a custom programmed one.

A1200 has 2 40PIN DIL ZIF ROMS 256K each IIRC

[JimS]

There's a design for a flashrom board on Aminet. It's for the 500/2000 rather than the 3000/4000/1200. I suppose you could modify it..

[locutus]

JurassicCamper wrote:
I think he is asking what type of roms are used.
EG:
PLCC 32 4 meg ROM
So he can replace the Amigas ROMS with a custom programmed one.

A1200 has 2 40PIN DIL ZIF ROMS 256K each IIRC

I was more thinking about what kind of ROM's it are as in model, like "24C128" etc. not the Package type

[CLS2086]

Hi, all kickstart after 1.3 need 512 kb (the A1200 use 2 x 256 kb to maintain 32 bits compability....).

Do you want to finish the yeah old and buggy kick 3.5 ?
Or want to rewrite the new kickstart v50 for A4000+CPPC for AOS 4 ??  ;-)

[jaokim]

Well, at the bottom of this page there is some info regarding the ROM-types. Pinouts and soforth
At gregdonner.org there is a lot of info on the ROM's aswell.

What are you going to do?  :-o
*me curios*

[adolescent]

I've read that the following will work.  Unfortunately, they're rare expensive chips.  So, building an adapter for a more common chip might be a better solution.  (Or, if KickFlash ever gets released, you can hack away...)

27C400 - EPROM
29F400 - FLASH

[locutus]

I would like to get some own written Code to run, first starting out with for example a little bit of code to let the LED's flash or so, the nicest thing to get running would be to hack the NetBSD kernel in a ROM and boot that (just as a proof of concept kinda idea)

[locutus]

JimS wrote:
There's a design for a flashrom board on Aminet. It's for the 500/2000 rather than the 3000/4000/1200. I suppose you could modify it..

where you talking about this one ? :

http://aminet.net/hard/hack/DC-KF500.readme

[locutus]

CLS2086 wrote:
Hi, all kickstart after 1.3 need 512 kb (the A1200 use 2 x 256 kb to maintain 32 bits compability....).

Do you want to finish the yeah old and buggy kick 3.5 ?
Or want to rewrite the new kickstart v50 for A4000+CPPC for AOS 4 ??  ;-)

I dont have a certain nickname wich shortens to "DM" and has a Amiga2000HD with Mil-Spec'd Custom Chips.

[JimS]

locutus wrote:
where you talking about this one ? :

http://aminet.net/hard/hack/DC-KF500.readme

Yes, that was the one I had in mind. I guess it would be kind of a pain to convert. You'd need to use 4 flash rams for 32 bit ram, and re-write the program to handle it..