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Author Topic: A1200 roms pluged on an Amiga 600?posible?  (Read 1673 times)

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Offline Doobrey

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Re: A1200 roms pluged on an Amiga 600?posible?
« on: October 30, 2005, 02:40:04 AM »
An adapter to fit the 2 ROMs should be pretty easy, all pins wired straight except /OE which needs a bit of logic to decode which ROM can output to the data bus (something like /ROM0_OE = /OE & !A1 , /ROM1_OE = /OE & A1)

But it's the content of the ROMs thats gonna cause you problems, IIRC the A1200 ROMs were compiled for an '020 CPU, so there's a good chance the 68000 of the A600 will run into instructions it can't understand and you'll be in guru hell :(
 (Just remembered, utility.library is 020+ on the A1200 for a couple of functions too...)
 Then there's the odd differences between the A600 and A1200, eg scsi.device in an A1200 ROM will only run if it finds a AA Gayle, so you won't be able to use a HD on the A600

Like C64_d0c said, it'll be a lot easier to buy a 40.63 ROM.
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Offline Doobrey

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Re: A1200 roms pluged on an Amiga 600?posible?
« Reply #1 on: October 30, 2005, 03:29:41 AM »
Quote

leirbag28 wrote:
 I saw something similar for the CDTV...............you can boot the ROMS on an A600, but the CDplayer didnt work if I remember.


I think that's cos both the CD32 and the CDTV use cd.device to play CDs. Pretty much the same problem as above, it's written for specific hardware (the  CD32 and CDTV drives aren't SCSI or IDE)
 There's a cd.device wrapper on the Dev2.1 CD that was meant for testing CD32 stuff on an A4000 with a SCSI drive, I'll have to have a fiddle and see if I can get it working :hammer:

I know it's late and it's probably my dodgy memory, but wasn't there a ATAPI compatible cd.device that came with an IDE-Fix clone many years ago?
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