|[Web] RISC OS vs. AmigaOS||ANN.lu|
|Posted on 03-May-2004 03:42 GMT by Ronald St-Maurice||22 comments|
Are we so dissimilar?
If you asked us to list the troubling issues facing the RISC OS platform right now, the lack of more modern hardware support and the OS development split between Castle and RISCOS Ltd. would probably be there, right at the top, beating other problems like the USB split between Castle and Simtec and the gradual slowdown in software development...
|List of all comments to this article|
|Sorted by date, most recent at bottom|
|Comment 1||Ole-Egil||03-May-2004 11:07 GMT|
|Comment 2||Sammy Nordström||03-May-2004 12:25 GMT|
|Comment 3||itix||03-May-2004 13:04 GMT|
|Comment 4||pixie||03-May-2004 13:09 GMT|
|Comment 5||Amon_Re||Registered user||03-May-2004 13:27 GMT|
|Comment 6||Kjetil||03-May-2004 13:35 GMT|
|Comment 7||JKD||03-May-2004 13:44 GMT|
|Comment 8||Don Cox||Registered user||03-May-2004 14:07 GMT|
|Comment 9||Graham_nli||03-May-2004 14:50 GMT|
|Comment 10||Darth_X||Registered user||03-May-2004 14:56 GMT|
|Comment 11||Christophe Decanini||Registered user||03-May-2004 15:10 GMT|
|Comment 12||minator||03-May-2004 15:27 GMT|
|Comment 13||Kolbjørn Barmen||03-May-2004 16:25 GMT|
|Comment 14||Joe "Floid" Kanowitz||03-May-2004 16:57 GMT|
|Comment 15||Ronald St-Maurice||03-May-2004 17:14 GMT|
|Comment 16||Seehund||03-May-2004 17:36 GMT|
|RISC OS vs. AmigaOS : Comment 17 of 22||ANN.lu|
|Posted by Graham_nli on 03-May-2004 20:21 GMT|
|In reply to Comment 15 (Ronald St-Maurice):|
The 26-bit addressing is a quirk of the early ARM designs. More modern ARM designs don't have that restriction, and even old designs like ARM7 only have it as a backwards compatibility issue. As this was designed in 1984, a 64MB address space would have been seen as amazingly huge, and it simplified some of the other implementation issues.
ARM1 was used in BBC Micro second processor units. ARM2 was used in the Acorn Archimedes. 32-bit addressing arrived with the ARM Version 3 (ARM6, ARM60, ARM600, ARM610, etc) processor / macrocell.
I think that ARM are currently on Version 5 or 6 of their instruction set.
|List of all comments to this article (continued)||