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- From: rossin@hpfcso.FC.HP.COM (Ted Rossin)
- Date: Mon, 21 Dec 1992 16:11:08 GMT
- Subject: Re: Address space for TOS 2.06
- Message-ID: <107480008@hpfcso.FC.HP.COM>
- Organization: Hewlett-Packard, Fort Collins, CO, USA
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!gatech!swrinde!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpfcso!rossin
- Newsgroups: comp.sys.atari.st.tech
- References: <eZV2VB1w165w@ersys.edmonton.ab.ca>
- Lines: 20
-
- I asked the same question about a month ago. Tos 2.06 starts at 0xE00000
- This is very different from the location of TOS 1.00 which starts at
- 0xFC0000. I forget where it is exactly but I the deal is that in the days
- of the 1040ST, TOS lived in a space that was 196K, TOS 2.06 needs more space
- so they threw it at 0xE00000. The total byte count of the TOS 2.06 ROMs is
- 256K which would overlap into I/O space in the ST if placed at 0xFC0000.
- In summary, I believe the following is true. I'm sure someone will yell if
- I am wrong:
-
- TOS 2.06 start: 0xE00000
- TOS 2.06 end : 0xE3FFFF
-
- This should be 256K if I can do the hex to decimal thing correctly.
-
-
- Ted Rossin.
-
- P.S. My TOS 2.06 ROMs came in and I have finished an adapter board for my
- external bus of my 1040ST to map the ROMs into the above address space.
- I'll give it a wirl after Christmas.
-