(WARNING: WIP) Gathered Work-in-progress on alternate keymap defs
Exploratory branch. Code is messy and untested.
Examining creating a module for each keymap rather than header file.
The apple 1 CLEAR input requires a high-impedance inactive state to avoid
conflict with the pin output of the 7404 at D12 (via CR4). So, to cover this
condition most generally, this patch changes the adds a Hi-Z when low physical
device for each output line, to complement the Hi-Z-when-high open collector
emulation. The nomenclature is changed from OUT*_OC (emulated open collector) to
OUT*_OPEN_HI and OUT*_OPEN_LO to indicate which condition gets the Hi-Z state.
- added the set() functions to the asdf_arch_atmega328p.[ch] files and applied
the above nomenclature.
- Added the set() functions to the asdf_physical.[ch] files and applied the
above nomenclature
- Modified the SCREEN_CLEAR device to PHYSICAL_OUT1_OPEN_LO in the apple2 and
ascii keymaps.
- Changed the RESET from PHYSICAL_OUT1_OC to PHYSICAL_OUT1_OPEN_HI in the apple2
and ascii keymaps.
- Split asdf_virtual.c into asdf_physical.c and asdf_virtual.c, moving the
functions that handle the physical resources to asdf_physical.c
- cleaned up nomenclature to be more consistent and less confusing.
- fixed keymap files and tests to use asdf_physical.c/h and new nomenclature.
- added asdf_physical.c to Makefiles.
