Penetrator-apple2/src/apple2.loader
Oliver Schmidt 67b6897fd0
Allow start with active 80-column display.
With active 80-column display there's no way to activate hires page2. Instead of directly fiddling with 80COLSTORE it seems the cleanest way to disable the 80-column display via the official firmware entry point.

The ProDOS 8 Technical Reference Manual states in chapter 5.3.1.3 - 80-Column Text Card:
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80-column text cards -- and other Apple IIe features -- can be turned off
using the following sequence of instructions:

 LDA #$15     ;Character that turns off video firmware
 JSR $C300   ;Print it to the video firmware
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2020-01-11 13:35:34 +01:00
..
loader.cfg Initial commit 2019-12-17 00:23:52 -08:00
loader.s Allow start with active 80-column display. 2020-01-11 13:35:34 +01:00