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[0T] New AmigaOS runs on dreamcast!!   Message List  
Reply | Forward Message #343 of 1156 |
[vmu] PC changes relative/absolute

Hello everybody (on both list :)

I'm posting from home - actually never posted from work - because I don't
have Internet connection at work.

I'm new to VM and today while reading the main PDF (the version from
the SDK10) I stumbled accross something I couldn't understand: all
exemples using relative jump seemed buggy to me.

I don't them handy so I can't quote the exact examples, but the problems
were usually on the line using the "LA" label in those examples, like

BR LA

What is unclear to me is which what value the assembler replace LA.
Judging by these exemples it should be the relative value.

But then why a JMP LA would work, JMP taking an absolute address?!
Someone to clear up my mind and tell me where I am wrong?

Now I'm checking Marcus Comstedt's site and it says the same as in the
official docs for those opcodes. (Marcus's infos might have been copy &
pasted, thought).

Thanks,
Omar Cornut / Zoop





Wed Jul 5, 2000 7:29 pm

cornut@...
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Message #343 of 1156 |
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Take a look at this transcript of an interview that Bill McEwen(Amiga's current head honcho) gave with CNN.Apparently they've demoed the OS on a dreamcast (@...
Richard Munn (aka ben...
richard.munn@...
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Jul 4, 2000
2:31 pm

Hello everybody (on both list :) I'm posting from home - actually never posted from work - because I don't have Internet connection at work. I'm new to VM and...
Omar Cornut
cornut@...
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Jul 5, 2000
7:29 pm
Marcus Comstedt
marcus@...
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Jul 6, 2000
2:30 pm
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