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- Newsgroups: comp.sys.amiga.programmer
- Path: EU.net!sun4nl!hguijt
- From: hguijt@inter.NL.net (Hans Guijt)
- Subject: Re: Amiga Memory Map Needed!!!
- Message-ID: <DLAAA2.39F@inter.NL.net>
- Organization: NLnet
- X-Newsreader: TIN [version 1.2 PL2]
- Date: Tue, 16 Jan 1996 17:08:26 GMT
-
-
- >Anyone know of anywhere on the 'net where I can get a half-decent Amiga
- >memory map. I've got one (kind of) called AGA.guide, but one has to be an
- >engineer to figure out half of it. Or...any books for the amiga that go into
- >the kind of detail that the classic book "Mapping The '64" had.
-
- The amiga does not have a memory map, as every machine may be configured
- differently. The way you access memory is as follows: you decide how much
- you want and what type it should be, and then you call a BIOS function
- called AllocVec. The result is in A0 and is either the address of your
- memory or 0, which indicates there was not enough memory left. To make
- matters more interesting the BIOS is also located at variable addresses on
- different Amiga's. In fact, the only thing you can be sure of is address 4,
- which contains the pointer to the BIOS.
-
- A good book would be the Hardware Reference Manual, but be sure to get the
- Rom Kernel Manual: Libraries as well. Both are available from
- Addison&Wesley, but I have to refer you to the FAQ for ISBN numbers.
-
-
- Bye,
-
- Hans
-
-
-