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Re: Apple ][

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  • Mike
    One other thing, unless you boot from a master disk, DOS assumes it is running on the same size memory footprint as the system it was initialized on. For most
    Message 1 of 17 , Apr 4, 2011
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      One other thing, unless you boot from a master disk, DOS assumes it is running on the same size memory footprint as the system it was initialized on. For most Apple ]['s this is 48K, but I had 36K on my system back in the day. :-)

      Regards,
      Mike Willegal

      --- In midatlanticretro@yahoogroups.com, Mike Willegal <mike@...> wrote:
      >
      > The init program will have to be either in integer basic or applesoft
      > depending upon what ROMs you have. This is the program that DOS runs
      > immediately after booting. DOS can boot with either BASIC ROM set,
      > if the init program matches the ROMs. As noted earlier in the thread,
      > to boot from non-autostart ROMs type 6control-P from monitor or PR#6
      > from BASIC, assuming the controller is in slot 6.
      >
      > If you have a firmware card in slot zero, with the other version of
      > BASIC, then DOS will automatically switch to the correct version. DOS
      > switches between integer and applesoft automatically when it loads a
      > basic program.
      >
      > If you have a language card in slot 0 and you have the right basic
      > image on DISK, DOS will automatically load the alternate version of
      > basic into the language card while booting. I'm not sure what
      > version of DOS started supporting this language card capability.
      >
      > Regards,
      > Mike Willegal
      >
      > PS My new Brain Board can be used as a firmware card, if integer
      > and/or applesoft BASIC images are burned into the EPROM on it.
      >
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