06.038 How can I modify ProDOS to do BLOADs in the input buffer and Text Page 1 areas?
Description
This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
06.038 How can I modify ProDOS to do BLOADs in the input buffer and Text Page 1 areas?
You can use a POKE 48984,192 to modify the bit map. This protects pages
$00 and $01, and unprotects pages $02-$07.
Note: Because the firmware and I/O cards make use of the "screen hole" bytes in
the $0400-$7FF area, BLOADing over these can interfere with some devices.
For this reason, it is best to have special DOS wares on a separate ProDOS
diskette with a STARTUP program which does the POKE 48984,192. This way you
will know that the system has been changed to run the DOS wares and not
inadvertently try to run a program like Appleworks, etc.. under the modified
ProDOS.
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By: David Empson
A safer method is to BLOAD the file elsewhere, and copy data onto the text
screen in a loop, copying 120 bytes and skipping 8 bytes, repeated 8 times.
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By: Supertimer, Rubywand, David Wilson, Steve Jensen
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