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| subject: | Re: A new boot code for Alex Freed`s Pseudodisk ][... |
Alex Freed wrote: > Deckard wrote: >> On Feb 1, 12:33 am, Alex Freed wrote: >>> It doesn't have much space for extra code >> >> Enough for me ;-) > > Great job but I was talking about the DOS3.3 page - identical to the ROM > on the real floppy controller cards. > >> >> I've optimized the code and added a test to check if the open apple is >> pressed and if so change the origin. >> And the free bytes are always = 11. >> >> My proposal: >> http://boutillon.free.fr/Underground/Outils/Beautiful_Boot_PD8/Txt/ALT_BOOT_MMC.txt >> >> >> I can't test it. Do you think it could work? > > I think it should, but one issue is that a different page of the ROM is > mapped in nibble mode. There should be a provision added to switch the > address line so as to map in the "ProDOS" page that you have optimized. > In my design hitting reset on the Apple doesn't reset the AVR. Does that take a wire or a diode to change? ;-) -michael ******** Note new website URL ******** NadaNet and AppleCrate II for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused." --- SBBSecho 2.12-Win32* Origin: Derby City Gateway (1:2320/0) SEEN-BY: 10/1 3 34/999 120/228 123/500 128/2 140/1 222/2 226/0 236/150 249/303 SEEN-BY: 250/306 261/20 38 100 1404 1406 1410 1418 266/1413 280/1027 320/119 SEEN-BY: 393/11 396/45 633/260 267 712/848 800/432 801/161 189 2222/700 SEEN-BY: 2320/100 105 200 2905/0 @PATH: 2320/0 100 261/38 633/260 267 |
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