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by actionfromafar
234 days ago
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I am convinced as little as 32 bytes of uncontested (fast-ram) would have made wonders. It would almost have been like doubling the number of data registers on the 68000. Either an extra chip with address decoder and this scratch memory could have been placed on the 68000 memory bus... this would 100% have worked. Or much better, the Agnus chip could have had this scratchpad added into it. It should have been feasible - it had about 20k transistors IIRC and a few hundred more should have been doable. I am fairly certain this would have worked but I'm not completely sure, it depends on if that addition would have complicated multiplexing and/or internal bandwidth demands, but the 68000 ran at 7MHz at the time, so it doesn't seem too difficult to me, armchair designer. Thanks for the article! It's always nice to see AROS and Amiga get some love. :) Achschully AROS m68k can be helpful for playing your old Amiga games in an otherwise open source way. You don't have to buy or pirate the official Kickstar ROM images if you use an AROS m68k ROM instead. But on the other hand, realistically you would probably pirate that old Amiga game to begin with, it's not like you have your old floppies lying around and if you did, you'd need a floppy drive to read them anyways... Dieshot of Agnus: https://upload.wikimedia.org/wikipedia/commons/9/9f/CBM_8370... |
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